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📚 Geography Common Questions about Map Reading

Instructions: Choose the best answer for each question.

1. What is the primary purpose of a map?
a) To show the exact location of every object on Earth
b) To depict the Earth's surface in a reduced and simplified form
c) To provide a detailed account of the history of a region
d) To illustrate the distribution of natural resources

Answer: b) To depict the Earth's surface in a reduced and simplified form

2. Which of the following is NOT a common type of map?
a) Political map
b) Physical map
c) Topographic map
d) Astronomical map

Answer: d) Astronomical map

3. What is a map scale?
a) The distance between two points on a map
b) The ratio between the distance on a map and the corresponding distance on the ground
c) The total area covered by a map
d) The number of features shown on a map

Answer: b) The ratio between the distance on a map and the corresponding distance on the ground

4. What do contour lines on a topographic map represent?
a) Different types of vegetation
b) Changes in elevation
c) Boundaries between political units
d) Directions of major roads

Answer: b) Changes in elevation

5. What is the difference between a compass rose and a map legend?
a) A compass rose shows directions, while a map legend explains map symbols
b) A compass rose shows map symbols, while a map legend explains directions
c) Both show the same information
d) Neither shows important information

Answer: a) A compass rose shows directions, while a map legend explains map symbols

6. Which direction does North typically point on a compass?
a) Up
b) Down
c) Left
d) Right

Answer: a) Up

7. What is a grid system used for on a map?
a) To measure the area of a map
b) To determine the exact location of points on a map
c) To represent different types of terrain
d) To show the boundaries of political units

Answer: b) To determine the exact location of points on a map

8. What is a map projection?
a) A method for representing the Earth's curved surface on a flat map
b) A system of lines that divide a map into squares
c) A scale that shows the distance between two points on a map
d) A legend that explains the symbols used on a map

Answer: a) A method for representing the Earth's curved surface on a flat map

9. What is the main disadvantage of a Mercator projection?
a) It distorts shapes and sizes of landmasses near the poles
b) It is difficult to use for navigation
c) It only shows a small portion of the Earth's surface
d) It is not accurate for representing distances

Answer: a) It distorts shapes and sizes of landmasses near the poles

10. What is a GPS (Global Positioning System)?
a) A system for determining the location of a point on Earth
b) A map that shows the location of all GPS satellites
c) A device for measuring distances on a map
d) A method for creating map projections

Answer: a) A system for determining the location of a point on Earth

11. Which of the following is NOT a common map symbol?
a) Dot
b) Star
c) Triangle
d) Circle

Answer: b) Star

12. What is the difference between a map and a globe?
a) A map is flat, while a globe is three-dimensional
b) A map shows a larger area than a globe
c) A globe is more accurate than a map
d) A map is more portable than a globe

Answer: a) A map is flat, while a globe is three-dimensional

13. What is the best type of map to use for planning a hiking trip?
a) Political map
b) Physical map
c) Topographic map
d) Road map

Answer: c) Topographic map

14. How can you determine the elevation of a point on a topographic map?
a) By reading the contour lines
b) By looking at the map scale
c) By using a compass
d) By measuring the distance between two points

Answer: a) By reading the contour lines

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📄BIOLOGY Questions

1. Which of the following is an example of a simple carbohydrate?
a. Starch
b. Cellulose
c. Glucose
d. Glycogen

2. Which of the following is an example of a complex carbohydrate?
a. Glucose
b. Sucrose
c. Starch
d. Fructose

3. Which of the following vitamins is water-soluble?
a. Vitamin A
b. Vitamin D
c. Vitamin E
d. Vitamin C

4. Which of the following minerals is important for bone health?
a. Iron
b. Calcium
c. Zinc
d. Selenium



5. Which of the following trace minerals is required for the synthesis of thyroid hormones?
a. Iron
b. Zinc
c. Iodine
d. Copper

6.  Which of the following is a condition that can occur due to a lack of carbohydrates in the diet?
a. Diabetes
b. Obesity
c. Anemia
d. Ketosis

7. Which of the following is a common symptom of iron deficiency?
a. Diarrhea
b. Anemia
c. Night blindness
d. Beriberi

8. An elderly man complains of poor night vision. Ophthalmic exam reveals corneal lesions and retinal hemorrhages. Which vitamin deficiency is most probable?
a) Thiamine
b) Niacin
c) Vitamin A
d) Vitamin C

9. What is the probability of having a child with cystic fibrosis if both parents are carriers of the gene but do not have the disease?
a. 0%
b. 25%
c. 50%
d. 75%

10. An older adult with a poor diet is diagnosed with megaloblastic anemia. Which vitamin deficiency is the most probable cause?
a) Folate
b) Vitamin B12
c) Vitamin C
d) Vitamin D

11. Which of the following is an example of a dominant genetic disorder?
a. Huntington's disease
b. Sickle cell anemia
c. Cystic fibrosis
d. Hemophilia

12. Which of the following is a bacterial disease that is typically spread through contaminated food or water?
a. Tuberculosis
b. Tetanus
c. Cholera
d. Malaria

13. Which of the following is a common method of controlling the growth of microorganisms in food?
a. Refrigeration
b. Exposure to sunlight
c. Adding sugar
d. Washing with soap and water

14. Which of the following is a recommended way to reduce the risk of heart disease?
a. Smoking cigarettes
b. Eating a high-fat diet
c. Regular exercise
d. Avoiding fruits and vegetables

15. A 4-year-old child is brought to the clinic with complaints of bone pain and difficulty walking. Physical examination reveals bowed legs and enlarged joints. Radiographic findings show abnormal bone growth. Which vitamin deficiency is the most likely cause of these symptoms?

A. Marasmus
B. Scurvy
C. Rickets
D. Kwashiorkor

Answers

1. c. Glucose - Glucose is a simple carbohydrate (monosaccharide).

2. c. Starch - Starch is a complex carbohydrate (polysaccharide).

3. d. Vitamin C - Vitamin C is a water-soluble vitamin.

4. b. Calcium - Calcium is important for bone health.

5. c. Iodine - Iodine is required for the synthesis of thyroid hormones.

6. d. Ketosis - Ketosis can occur due to a lack of carbohydrates in the diet.

7. b. Anemia - Anemia is a common symptom of iron deficiency.

8. c) Vitamin A - Poor night vision and corneal lesions suggest a vitamin A deficiency.

9. b. 25% - If both parents are carriers of the cystic fibrosis gene, there is a 25% chance their child will have the disease.

10. a) Folate or b) Vitamin B12 - Both deficiencies can cause megaloblastic anemia, but if forced to choose, b) Vitamin B12 is often more closely associated with this condition in older adults.

11. a. Huntington's disease - Huntington's disease is an example of a dominant genetic disorder.

12. c. Cholera - Cholera is a bacterial disease typically spread through contaminated food or water.

13. a. Refrigeration - Refrigeration is a common method of controlling the growth of microorganisms in food.

14. c. Regular exercise - Regular exercise is recommended to reduce the risk of heart disease.

15. C. Rickets - The symptoms described (bone pain, difficulty walking, bowed legs, and enlarged joints) are indicative of rickets, which is caused by vitamin D deficiency.

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📚BIOLOGY COMMON QUESTIONS

1. Which of the following is NOT a function of the respiratory system?
(A) Gas exchange
(B) Regulation of body temperature
(C) Production of hormones
(D) Filtration of blood

2. The primary organ of gas exchange in the respiratory system is the:
(A) Lungs
(B) Heart
(C) Liver
(D) Kidneys

3. Which of the following structures is responsible for warming and moistening inhaled air?
(A) Nasal cavity
(B) Trachea
(C) Alveoli
(D) Pleura

4. The process of gas exchange in the lungs is known as:
(A) Diffusion
(B) Osmosis
(C) Filtration
(D) Active transport

5. Which of the following is a respiratory muscle that helps expand the chest cavity during inhalation?
(A) Diaphragm
(B) Intercostal muscles
(C) Abdominal muscles
(D) Both A and B

6. Which enzyme initiates the digestion of proteins in the stomach?
(A) Pepsin
(B) Amylase
(C) Lipase
(D) Maltase

7. The main function of the large intestine is to:
(A) Absorb nutrients
(B) Digest fats
(C) Absorb water
(D) Store bile

8. Which organ produces bile, a substance that aids in the digestion of fats?
(A) Liver
(B) Pancreas
(C) Gallbladder
(D) Small intestine

9. The process by which food is broken down into smaller molecules is called:
(A) Ingestion
(B) Digestion
(C) Absorption
(D) Elimination

10. Which of the following is NOT a type of digestive enzyme?
(A) Carbohydrase
(B) Protease
(C) Lipase
(D) Protease

11. The main function of the heart is to:
(A) Pump blood throughout the body
(B) Filter waste products from the blood
(C) Regulate body temperature
(D) Produce red blood cells

12. Which of the following blood vessels carries blood away from the heart?
(A) Arteries
(B) Veins
(C) Capillaries
(D) Lymph vessels

13. The exchange of oxygen and carbon dioxide between blood and body cells occurs in the:
(A) Arteries
(B) Veins
(C) Capillaries
(D) Lymphatics

14. Which of the following is NOT a type of blood cell?
(A) Red blood cell
(B) White blood cell
(C) Thrombocyte
(D) Neutrophil

15. The function of platelets is to:
(A) Carry oxygen
(B) Fight infection
(C) Clot blood
(D) Regulate blood pressure

16. The main function of the kidneys is to:
(A) Filter waste products from the blood
(B) Regulate blood pressure
(C) Produce hormones
(D) Digest food

17. The filtering unit of the kidney is the:
(A) Nephron
(B) Glomerulus
(C) Bowman's capsule
(D) Renal pelvis

18. Which of the following substances is NOT filtered by the kidneys?
(A) Glucose
(B) Urea
(C) Creatinine
(D) Sodium

19. The kidneys help regulate blood pressure by:
(A) Releasing hormones
(B) Adjusting salt and water balance
(C) Controlling blood flow
(D) Both B and C

20. Which of the following is a common kidney disease?
(A) Renal failure
(B) Diabetes
(C) Hypertension
(D) All of the above

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ለመላው የክርስትና እምነት ተከታዮች እንኳን ለጌታችን ለመድኃኒታችን ለኢየሱስ ክርስቶስ የልደት በዓል በሰላም አደረሳችሁ !

መልካም በዓል ✨

Ethio Quizzes


📌 Physics Motion in a straight line Q&A

1. What is the definition of rectilinear motion?
A) Motion in a circular path 
B) Motion along a straight line 
C) Motion with varying velocity 
D) Motion along a curved path 

Answer: B) Motion along a straight line

2. An object is in motion if:
A) It remains at rest 
B) It changes position relative to a reference point 
C) It moves in a circular path 
D) Its speed remains constant 

Answer: B) It changes position relative to a reference point

3. Which of the following is a scalar quantity?
A) Displacement 
B) Velocity 
C) Distance 
D) Acceleration 

Answer: C) Distance

4. Displacement refers to:
A) The total path length travelled by a body 
B) The change in position of a body in a certain direction 
C) The speed of an object 
D) The average velocity of an object 

Answer: B) The change in position of a body in a certain direction

5. How can the speed of an object be calculated?
A) Distance divided by time 
B) Displacement divided by time 
C) Velocity multiplied by time 
D) Acceleration multiplied by time 

Answer: A) Distance divided by time

6. Which of the following is true about velocity?
A) Velocity is always the same as speed 
B) Velocity is a scalar quantity 
C) Velocity includes both speed and direction 
D) Velocity cannot be zero 

Answer: C) Velocity includes both speed and direction

7. The average velocity is:
A) Displacement divided by time 
B) Distance divided by time 
C) Speed at a specific instant 
D) Zero for uniform motion 

Answer: A) Displacement divided by time

8. When is the average velocity the same as instantaneous velocity?
A) When the object is accelerating 
B) When the object is in uniform motion 
C) When the object changes direction 
D) When the object is at rest 

Answer: B) When the object is in uniform motion

9. Which of the following is true about acceleration?
A) Acceleration occurs only when an object speeds up 
B) Acceleration can also occur when an object slows down 
C) Acceleration does not depend on the direction of motion 
D) Acceleration is not related to a change in velocity 

Answer: B) Acceleration can also occur when an object slows down

10. Uniform motion refers to:
A) Motion with varying speed 
B) Motion along a curved path 
C) Motion along a straight line with constant velocity 
D) Motion where the object is at rest 

Answer: C) Motion along a straight line with constant velocity

11. The slope of a position-versus-time graph represents:
A) Acceleration 
B) Instantaneous velocity 
C) Distance 
D) Average velocity 

Answer: B) Instantaneous velocity

12. What is true about instantaneous velocity and average velocity if the velocity is constant?
A) Instantaneous velocity is always greater than average velocity 
B) Instantaneous velocity is less than average velocity 
C) Instantaneous velocity equals average velocity 
D) Instantaneous velocity cannot be determined 

Answer: C) Instantaneous velocity equals average velocity

13. Which of the following quantities is a vector?
A) Distance 
B) Speed 
C) Displacement 
D) Time 

Answer: C) Displacement

14. If an object moves with constant speed, what can be said about its velocity?
A) It is constantly changing 
B) It has zero acceleration 
C) Its displacement is zero 
D) It is non-uniform 

Answer: B) It has zero acceleration

15. What is the change in the position of a body called?
A) Distance 
B) Displacement 
C) Speed 
D) Acceleration 

Answer: B) Displacement

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Maths workbook.pdf
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🧿 Maths EUEE

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✅ እዚህ ላይ ያሉትን ጥያቄዎች ከሰራችሁ በእርግጠኝነት Math ከ 90 በላይ ነው ምታመጡ


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Geography
Grade 12
#FinalExamchallenge

Unit 1: Major Geological Processes Associated with Plate Tectonics,Unit 2: Climate Change Unit 3: Population Policies, Programs, and the Environment and Unit 4: Solutions to Environmental and Sustainability Problems

Final Exam-Level


1. Which of the following is NOT a type of plate boundary?
a. Divergent boundary
b. Convergent boundary
c. Subterranean boundary
d. Transform boundary

2. What geological feature is typically formed at a divergent boundary?
a. Mountain ranges
b. Mid-ocean ridges
c. Earthquake faults
d. Subduction zones

3. Which process is primarily responsible for the movement of tectonic plates?
a. Gravitational force
b. Mantle convection
c. Ocean currents
d. Magnetic field reversals

4. What is the term for the point on the Earth's surface directly above an earthquake's origin?
a. Hypocenter
b. Focus
c. Epicenter
d. Seismic zone

---


5. Which greenhouse gas is considered the most significant in driving climate change?
a. Nitrogen
b. Carbon dioxide
c. Methane
d. Ozone

6. Which of the following is NOT a consequence of climate change?
a. Rising sea levels
b. Increased volcanic activity
c. Extreme weather events
d. Melting polar ice caps

7. What is the term for the long-term average weather patterns in a region?
a. Weather
b. Climate
c. Ecosystem
d. Biosphere

8. The Paris Agreement aims to limit global temperature rise to:
a. 1.0°C above pre-industrial levels
b. 2.0°C above pre-industrial levels
c. 3.0°C above pre-industrial levels
d. 4.0°C above pre-industrial levels

---


9. What is the primary goal of population policies?
a. Increase urbanization
b. Balance population growth and resource use
c. Promote global trade
d. Reduce migration

10. A country with a declining birth rate may adopt which of the following measures?
a. Pronatalist policies
b. Antinatalist policies
c. Immigration restrictions
d. High taxation

11. Which factor is NOT directly affected by rapid population growth?
a. Deforestation
b. Energy consumption
c. Geological processes
d. Water scarcity

12. Which international program focuses on sustainable development and reducing poverty?
a. Millennium Development Goals (MDGs)
b. Kyoto Protocol
c. Earth Charter
d. Paris Agreement

---
13. Sustainable development primarily aims to:
a. Maximize industrial production
b. Conserve resources for future generations
c. End all resource use
d. Focus only on economic growth

14. What is the main benefit of renewable energy sources?
a. They are cheaper than fossil fuels.
b. They reduce greenhouse gas emissions.
c. They require minimal land use.
d. They eliminate waste production.

15. Which of the following practices contributes to sustainability?
a. Overfishing
b. Reforestation
c. Excessive mining
d. Single-use plastics

---
Answer
1. c
2. b
3. b
4. c
5. b
6. b
7. b
8. b
9. b
10. a
11. c
12. a
13. b
14. b
15. b


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Geography
Grade 12
#FinalExamchallenge
---Unit 1: Development of Capitalism and Nationalism (1815–1914)
,Unit 2: Africa and the Colonial Experience (1880s–1960s) ,Unit 3: Social, Economic, and Political Developments in Ethiopia (Mid-19th C. to 1941)

Final Exam – History (Grade 12)
Instructions: Select the most appropriate answer for each question.

---

1. What was the primary goal of the Congress of Vienna in 1815?
a) To spread liberal revolutions across Europe
b) To establish peace and restore monarchies
c) To industrialize Europe
d) To divide colonial territories among European powers

2. Which of the following was a driving force behind the unification of Italy?
a) Giuseppe Garibaldi and the Red Shirts
b) Otto von Bismarck and Realpolitik
c) The Treaty of Versailles
d) The Franco-Prussian War

3. The Industrial Revolution led to the rise of capitalism primarily because:
a) It increased wealth distribution among all classes
b) It created new technologies and industries that promoted private enterprise
c) It abolished social hierarchies
d) It favored agricultural economies over industrial economies

4. Which country was described as the "Workshop of the World" during the Industrial Revolution?
a) Germany
b) United States
c) Britain
d) France

5. The scramble for Africa in the late 19th century was largely a result of:
a) The European need for raw materials and markets
b) The abolition of the slave trade
c) African invitations to European rulers
d) The decline of European nationalism

---


6. What was the significance of the Berlin Conference of 1884–1885?
a) It declared the independence of African nations
b) It abolished the slave trade
c) It divided Africa among European powers without African consent
d) It established the Pan-African movement

7. Which European nation colonized the most extensive territory in Africa by the early 20th century?
a) France
b) Belgium
c) Germany
d) Portugal

8. What system did colonial powers use to extract labor and resources from African societies?
a) Democratic governance
b) Mercantilism
c) Forced labor and taxation
d) Modernization projects

9. The Mau Mau Rebellion (1952–1960) occurred in:
a) South Africa
b) Kenya
c) Nigeria
d) Ghana

10. Which of the following African leaders was instrumental in the independence movement in Ghana?
a) Jomo Kenyatta
b) Kwame Nkrumah
c) Julius Nyerere
d) Haile Selassie

---


11. Which Ethiopian emperor is credited with modernizing Ethiopia in the late 19th century?
a) Tewodros II
b) Yohannes IV
c) Menelik II
d) Haile Selassie

12. The Battle of Adwa (1896) was significant because:
a) It marked Ethiopia's colonization by Italy
b) It ensured Ethiopia’s victory over Italian colonial forces
c) It led to the downfall of Menelik II
d) It resulted in Ethiopia joining the League of Nations

13. Which foreign policy strategy did Emperor Menelik II use to resist colonization?
a) Building alliances with European powers
b) Emphasizing isolationism
c) Promoting the slave trade
d) Signing treaties with local African kingdoms

14. What was a major reform introduced by Emperor Haile Selassie in the 1930s?
a) Establishing a written constitution
b) Abolishing the monarchy
c) Removing Ethiopia from the League of Nations
d) Expanding Italian influence in Ethiopia

15. What event marked the end of Ethiopia’s sovereignty during the early 20th century?
a) The Battle of Maqdala (1868)
b) The Italo-Ethiopian War (1935–1936)
c) The Eritrean Liberation War
d) The Treaty of Wuchale

Answer
1. b
2. a
3. b
4. c
5. a
6. c
7. a
8. c
9. b
10. b
11. c
12. b
13. a
14. a
15. b


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Репост из: Ethio Matrics
#ለጥንቃቄ

በቴሌግራም መረጃዎች እየተመዘበሩ እንደሆነ የኢንፎርሜሽን መረብ ደህንነት አስተዳደር / ኢንሳ አሳውቋል።

ኢንሳ በዛሬው ዕለት በቴሌግራም መረጃዎች እየተመዘበሩ በመሆኑ ተጠቃሚዎች ተገቢውን ጥንቃቄ እንዲያደርጉ ሲል አሳስቧል።

ኢንሳ ብዙ የቴሌግራም አካውንቶች በተለያዩ ማስገሪያ (ፊሺንግ ሊንክ) አማካኝነት መረጃዎች እየተመዘበሩ እንደሆነ ገልጷል።

በመሆኑንም ከማንኛውም የቴሌግራም ተጠቃሚ (ከሚያውቁትም ሆነ ከማያውቁት) ግለሰብ ሊንክ ቢላክ መክፈት ተገቢ እንዳልሆነ እና ወዲያውኑ ማጥፋት እንደሚገባ አሳስቧል።

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Geography
Grade 12
#FinalExamchallenge

Unit 1: Major Geological Processes Associated with Plate Tectonics,Unit 2: Climate Change   Unit 3: Population Policies, Programs, and the Environment and Unit 4: Solutions to Environmental and Sustainability Problems 

Final Exam-Level


1. Which of the following is NOT a type of plate boundary? 
   a. Divergent boundary 
   b. Convergent boundary 
   c. Subterranean boundary 
   d. Transform boundary 

2. What geological feature is typically formed at a divergent boundary? 
   a. Mountain ranges 
   b. Mid-ocean ridges 
   c. Earthquake faults 
   d. Subduction zones 

3. Which process is primarily responsible for the movement of tectonic plates? 
   a. Gravitational force 
   b. Mantle convection 
   c. Ocean currents 
   d. Magnetic field reversals 

4. What is the term for the point on the Earth's surface directly above an earthquake's origin? 
   a. Hypocenter 
   b. Focus 
   c. Epicenter 
   d. Seismic zone 

---


5. Which greenhouse gas is considered the most significant in driving climate change? 
   a. Nitrogen 
   b. Carbon dioxide 
   c. Methane 
   d. Ozone 

6. Which of the following is NOT a consequence of climate change? 
   a. Rising sea levels 
   b. Increased volcanic activity 
   c. Extreme weather events 
   d. Melting polar ice caps 

7. What is the term for the long-term average weather patterns in a region? 
   a. Weather 
   b. Climate 
   c. Ecosystem 
   d. Biosphere 

8. The Paris Agreement aims to limit global temperature rise to: 
   a. 1.0°C above pre-industrial levels 
   b. 2.0°C above pre-industrial levels 
   c. 3.0°C above pre-industrial levels 
   d. 4.0°C above pre-industrial levels 

---

 
9. What is the primary goal of population policies? 
   a. Increase urbanization 
   b. Balance population growth and resource use 
   c. Promote global trade 
   d. Reduce migration 

10. A country with a declining birth rate may adopt which of the following measures? 
    a. Pronatalist policies 
    b. Antinatalist policies 
    c. Immigration restrictions 
    d. High taxation 

11. Which factor is NOT directly affected by rapid population growth? 
    a. Deforestation 
    b. Energy consumption 
    c. Geological processes 
    d. Water scarcity 

12. Which international program focuses on sustainable development and reducing poverty? 
    a. Millennium Development Goals (MDGs) 
    b. Kyoto Protocol 
    c. Earth Charter 
    d. Paris Agreement 

---
13. Sustainable development primarily aims to: 
    a. Maximize industrial production 
    b. Conserve resources for future generations 
    c. End all resource use 
    d. Focus only on economic growth 

14. What is the main benefit of renewable energy sources? 
    a. They are cheaper than fossil fuels. 
    b. They reduce greenhouse gas emissions. 
    c. They require minimal land use. 
    d. They eliminate waste production. 

15. Which of the following practices contributes to sustainability? 
    a. Overfishing 
    b. Reforestation 
    c. Excessive mining 
    d. Single-use plastics 

---
Answer
1. c 
2. b 
3. b 
4. c 
5. b 
6. b 
7. b 
8. b 
9. b 
10. a 
11. c 
12. a 
13. b 
14. b 
15. b


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Grade_12th_Geo_Multiple_Choose_practice_Questions_with_Answer.pdf
90.1Кб
🌎 Geography 100 question

🧮 population table questions

🌤 climate table questions

📒answer sheet provided


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📌 Chemistry Grade 12 more unit 1 and unit 2

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📌 እላዩላይ ያለው መልስ ሁሉም ልክ አይደለም በራሳቹ ሞክሩት። በተለይ Grade 9 unit 5 and 8 ,Grade 10 unit 6 , Grade 12 unit 1 and 2 በዉስጡ ይዟል

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Репост из: Ethio Matrics
የ2017 12ኛ ክፍል ፈተና የሚሰጥበት ቀን

🎯ከ ሰኔ 18 -28  መጀመሪያ ለማህበራዊ ሳይንስ በመቀጠል ደግሞ ለተፈጥሮ ሳይንስ ተፈታኞች በበይነ መረብ (Online) እና በዩኒቨርሲቲ ውስጥ በወረቀት ይሰጣል። በዘንድሮው አመት ከተፈታኞች ውስጥ ግማሽ
የሚሆኑትን በኦላይን ለመስጠት አቅም አለን ሲሉ የትምህርት ሚኒስትር ብርሀኑ ነጋ መናገራቸው ይታወሳል ።

🎯ስለሆነም ተፈታኞች እና የሚመለከታቸው ሁሉ ተገቢውን ዝግጅት እንዲያደርጉ እናሳስባለን ።

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Aptitude Social Exam 2016 @ethiouniversity1.pdf
3.1Мб
📌 የ2016 የ 12ኛ ክፍል ፈተና 👏

☑️Subject :- Aptitude

🪞ሶሻል ተማሪዎች የተፈተኑት ፈተና ነው። ለናቹራል ተማሪዎች ስለሚጠቅማችሁ Practice አድርጉ✌️

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History Vital questions for grade 12.pdf
145.5Кб
🕳 150 history questions

🗣Practice well and use your time

You can do it 🧡


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📄BIOLOGY Questions

1. Which of the following is an example of a simple carbohydrate?
a. Starch
b. Cellulose
c. Glucose
d. Glycogen

2. Which of the following is an example of a complex carbohydrate?
a. Glucose
b. Sucrose
c. Starch
d. Fructose

3. Which of the following vitamins is water-soluble?
a. Vitamin A
b. Vitamin D
c. Vitamin E
d. Vitamin C

4. Which of the following minerals is important for bone health?
a. Iron
b. Calcium
c. Zinc
d. Selenium



5. Which of the following trace minerals is required for the synthesis of thyroid hormones?
a. Iron
b. Zinc
c. Iodine
d. Copper

6.  Which of the following is a condition that can occur due to a lack of carbohydrates in the diet?
a. Diabetes
b. Obesity
c. Anemia
d. Ketosis

7. Which of the following is a common symptom of iron deficiency?
a. Diarrhea
b. Anemia
c. Night blindness
d. Beriberi

8. An elderly man complains of poor night vision. Ophthalmic exam reveals corneal lesions and retinal hemorrhages. Which vitamin deficiency is most probable?
a) Thiamine
b) Niacin
c) Vitamin A
d) Vitamin C

9. What is the probability of having a child with cystic fibrosis if both parents are carriers of the gene but do not have the disease?
a. 0%
b. 25%
c. 50%
d. 75%

10. An older adult with a poor diet is diagnosed with megaloblastic anemia. Which vitamin deficiency is the most probable cause?
a) Folate
b) Vitamin B12
c) Vitamin C
d) Vitamin D

11. Which of the following is an example of a dominant genetic disorder?
a. Huntington's disease
b. Sickle cell anemia
c. Cystic fibrosis
d. Hemophilia

12. Which of the following is a bacterial disease that is typically spread through contaminated food or water?
a. Tuberculosis
b. Tetanus
c. Cholera
d. Malaria

13. Which of the following is a common method of controlling the growth of microorganisms in food?
a. Refrigeration
b. Exposure to sunlight
c. Adding sugar
d. Washing with soap and water

14. Which of the following is a recommended way to reduce the risk of heart disease?
a. Smoking cigarettes
b. Eating a high-fat diet
c. Regular exercise
d. Avoiding fruits and vegetables

15. A 4-year-old child is brought to the clinic with complaints of bone pain and difficulty walking. Physical examination reveals bowed legs and enlarged joints. Radiographic findings show abnormal bone growth. Which vitamin deficiency is the most likely cause of these symptoms?

A. Marasmus
B. Scurvy
C. Rickets
D. Kwashiorkor

Answers

1. c. Glucose - Glucose is a simple carbohydrate (monosaccharide).

2. c. Starch - Starch is a complex carbohydrate (polysaccharide).

3. d. Vitamin C - Vitamin C is a water-soluble vitamin.

4. b. Calcium - Calcium is important for bone health.

5. c. Iodine - Iodine is required for the synthesis of thyroid hormones.

6. d. Ketosis - Ketosis can occur due to a lack of carbohydrates in the diet.

7. b. Anemia - Anemia is a common symptom of iron deficiency.

8. c) Vitamin A - Poor night vision and corneal lesions suggest a vitamin A deficiency.

9. b. 25% - If both parents are carriers of the cystic fibrosis gene, there is a 25% chance their child will have the disease.

10. a) Folate or b) Vitamin B12 - Both deficiencies can cause megaloblastic anemia, but if forced to choose, b) Vitamin B12 is often more closely associated with this condition in older adults.

11. a. Huntington's disease - Huntington's disease is an example of a dominant genetic disorder.

12. c. Cholera - Cholera is a bacterial disease typically spread through contaminated food or water.

13. a. Refrigeration - Refrigeration is a common method of controlling the growth of microorganisms in food.

14. c. Regular exercise - Regular exercise is recommended to reduce the risk of heart disease.

15. C. Rickets - The symptoms described (bone pain, difficulty walking, bowed legs, and enlarged joints) are indicative of rickets, which is caused by vitamin D deficiency.

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📌 BIOLOGY common questions about photosynthesis

1. What is the primary function of the light-dependent reactions in photosynthesis?
a) Production of glucose
b) Generation of ATP and NADPH
c) Absorption of carbon dioxide
d) Release of oxygen

2. Where do the light-dependent reactions take place in a plant cell?
a) Stroma
b) Thylakoid membrane
c) Cytoplasm
d) Nucleus

3. Which molecule is split during the light-dependent reactions to release oxygen?
a) Water
b) Carbon dioxide
c) Glucose
d) ATP

4. What is the role of photosystem II in the light-dependent reactions?
a) Production of NADPH
b) Absorption of light energy
c) Splitting water molecules
d) Release of oxygen

5. Which molecule acts as an electron carrier in the light-dependent reactions?
a) NADP+
b) ATP
c) Glucose
d) Carbon dioxide

6. What is the primary product of the light-independent reactions (Calvin cycle)?
a) Oxygen
b) Glucose
c) ATP
d) NADPH

7. In which part of the chloroplast does the Calvin cycle occur?
a) Thylakoid membrane
b) Stroma
c) Grana
d) Cytoplasm

8. What is the role of rubisco in the Calvin cycle?
a) Capture of light energy
b) Fixation of carbon dioxide
c) Production of ATP
d) Release of oxygen

9. How many molecules of G3P (glyceraldehyde-3-phosphate) are produced in one turn of the Calvin cycle?
a) 1
b) 2
c) 3
d) 6

10. What is the fate of most of the G3P molecules produced in the Calvin cycle?
a) Used to regenerate RuBP
b) Converted into glucose
c) Transferred to the light-dependent reactions
d) Released as waste products

11. Which molecule is responsible for providing the energy needed for the Calvin cycle?
a) ATP
b) NADPH
c) Water
d) Carbon dioxide

12. What is the role of the enzyme RuBisCO in the Calvin cycle?
a) Splitting water molecules
b) Regeneration of RuBP
c) Fixation of carbon dioxide
d) Production of glucose

13. During the light-independent reactions, what happens to the carbon atoms from carbon dioxide?
a) They are released as waste products
b) They are used to produce ATP
c) They are incorporated into organic molecules
d) They are converted into oxygen

14. Which molecule is regenerated at the end of the Calvin cycle to continue the process?
a) RuBP (ribulose bisphosphate)
b) G3P (glyceraldehyde-3-phosphate)
c) NADP+
d) ATP

15. What is the overall purpose of both the light-dependent and light-independent reactions in photosynthesis?
a) To produce oxygen for cellular respiration
b) To convert light energy into chemical energy (ATP and NADPH)
c) To release carbon dioxide into the atmosphere
d) To produce water as a byproduct

📍 Answer

1. b) Generation of ATP and NADPH

2. b) Thylakoid membrane

3.  a) Water

4. b) Absorption of light energy (and also c) Splitting water molecules)

5.  a) NADP+

6. b) Glucose

7.  b) Stroma

8.  b) Fixation of carbon dioxide

9.  a) 1 (Note: Two G3P molecules are needed to form one glucose, but one turn produces one G3P.)

10. a) Used to regenerate RuBP

11.  a) ATP (NADPH provides reducing power, but ATP provides energy.)

12.  c) Fixation of carbon dioxide

13. c) They are incorporated into organic molecules

14. a) RuBP (ribulose bisphosphate)

15.  b) To convert light energy into chemical energy (ATP and NADPH)

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Which type of bond links amino acids together in a polypeptide chain?
  a) Glycosidic bond
  b) Phosphodiester bond
  c) Peptide bond
  d) Hydrogen bond

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📌 Grade 12 biology
📍 Unit 3: Enzymes

Enzymes: mid Exam

Part I: Structure and Function of Enzymes

1.What is the primary role of enzymes in biological systems?
A. To provide energy for cellular reactions
B. To act as structural components in cells
C. To lower the activation energy of biochemical reactions
D. To alter the equilibrium of chemical reactions

2.Enzymes are composed primarily of which type of biomolecule?
A. Lipids
B. Carbohydrates
C. Nucleic acids
D. Proteins

3.Which part of the enzyme binds to the substrate?
A. Allosteric site
B. Active site
C. Coenzyme
D. Product binding site

4.What is the effect of extreme temperatures on enzyme activity?
A. Enzyme activity increases indefinitely
B. Enzymes become more specific to substrates
C. Enzymes may denature and lose function
D. Enzyme activity is unaffected

Part II: Enzyme Specificity and Mechanisms

1.Which of the following best describes the "lock and key" model of enzyme activity?
A. The enzyme changes shape to fit the substrate
B. The enzyme has a specific shape complementary to the substrate
C. Substrates compete for the enzyme’s active site
D. The enzyme forms multiple products from a single substrate

2.Which term describes a molecule that competes with the substrate for binding to the enzyme's active site?
A. Noncompetitive inhibitor
B. Competitive inhibitor
C. Coenzyme
D. Activator

3.What happens to an enzyme after it catalyzes a reaction?
A. It is permanently altered and degraded
B. It is recycled and reused for the same reaction
C. It is converted into a substrate
D. It becomes inactive for a short time

Part III: Factors Affecting Enzyme Activity

1.Which of the following factors does NOT affect enzyme activity?
A. Temperature
B. Substrate concentration
C. pH
D. Amount of sunlight

2.An enzyme exhibits optimal activity at a pH of 7. What happens if the pH decreases to 4?
A. Enzyme activity increases
B. Enzyme activity decreases
C. Enzyme structure becomes more stable
D. No change occurs in enzyme activity

3.What is the role of cofactors in enzymatic reactions?
A. They alter the enzyme's shape permanently
B. They prevent the substrate from binding
C. They assist in stabilizing the enzyme-substrate complex
D. They denature the enzyme at high temperatures

Part IV: Applications of Enzymes

1.Which of the following enzymes is involved in the breakdown of starch?
A. Lipase
B. Protease
C. Amylase
D. Lactase

2.What type of enzyme catalyzes the conversion of hydrogen peroxide into water and oxygen?
A. Oxidase
B. Catalase
C. Hydrolase
D. Lyase

3.In industrial processes, enzymes are used because they:
A. Increase reaction times significantly
B. Function well under all conditions
C. Are reusable and work efficiently under mild conditions
D. Are inexpensive to produce

Answers
Part l
1.C
2.D
3.B
4.C
Part ll
1.B
2.B
3.B
Part lll
1.D
2.B
3.C
Part Vl
1.C
2.B
3.C

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