#Thisweeklychallenge
Biology Grade 12 Mid Exam covering Unit 3: Energy Transformation and Unit 4: Evolution.
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1. What is the main product of cellular respiration?
a) Glucose
b) Oxygen
c) ATP
d) Carbon dioxide
2. The process of breaking down glucose in the absence of oxygen is called:
a) Photosynthesis
b) Aerobic respiration
c) Fermentation
d) Chemosynthesis
3. Where does the Krebs cycle take place in a cell?
a) Cytoplasm
b) Mitochondrial matrix
c) Ribosome
d) Nucleus
4. Which molecule is the final electron acceptor in the electron transport chain of aerobic respiration?
a) Carbon dioxide
b) NADH
c) Oxygen
d) ATP
5. In photosynthesis, the light-dependent reactions occur in the:
a) Cytoplasm
b) Stroma
c) Thylakoid membrane
d) Mitochondrial matrix
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6. Who proposed the theory of inheritance of acquired characteristics?
a) Charles Darwin
b) Jean-Baptiste Lamarck
c) Alfred Wallace
d) Gregor Mendel
7. What is genetic drift?
a) The movement of alleles between populations
b) The random change in allele frequency in a population
c) The adaptation of organisms to their environment
d) The selection of advantageous traits
8. Fossils are important evidence for evolution because they:
a) Prove all species were created simultaneously.
b) Show changes in species over time.
c) Do not provide information about extinct organisms.
d) Are formed in igneous rocks.
9. Which of the following is an example of convergent evolution?
a) Similar wings in bats and birds
b) Development of resistance to pesticides in insects
c) Variation in finch beak size
d) Presence of homologous bones in mammals
10. The concept of "survival of the fittest" means:
a) Only the strongest individuals survive.
b) Individuals best adapted to the environment survive and reproduce.
c) Evolution occurs only through natural disasters.
d) Evolution happens without any selective pressure.
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This weekly challenge
Biology Grade 12 Mid Exam covering Unit 3: Energy Transformation and Unit 4: Evolution.
---
1. What is the main product of cellular respiration?
a) Glucose
b) Oxygen
c) ATP
d) Carbon dioxide
2. The process of breaking down glucose in the absence of oxygen is called:
a) Photosynthesis
b) Aerobic respiration
c) Fermentation
d) Chemosynthesis
3. Where does the Krebs cycle take place in a cell?
a) Cytoplasm
b) Mitochondrial matrix
c) Ribosome
d) Nucleus
4. Which molecule is the final electron acceptor in the electron transport chain of aerobic respiration?
a) Carbon dioxide
b) NADH
c) Oxygen
d) ATP
5. In photosynthesis, the light-dependent reactions occur in the:
a) Cytoplasm
b) Stroma
c) Thylakoid membrane
d) Mitochondrial matrix
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6. Who proposed the theory of inheritance of acquired characteristics?
a) Charles Darwin
b) Jean-Baptiste Lamarck
c) Alfred Wallace
d) Gregor Mendel
7. What is genetic drift?
a) The movement of alleles between populations
b) The random change in allele frequency in a population
c) The adaptation of organisms to their environment
d) The selection of advantageous traits
8. Fossils are important evidence for evolution because they:
a) Prove all species were created simultaneously.
b) Show changes in species over time.
c) Do not provide information about extinct organisms.
d) Are formed in igneous rocks.
9. Which of the following is an example of convergent evolution?
a) Similar wings in bats and birds
b) Development of resistance to pesticides in insects
c) Variation in finch beak size
d) Presence of homologous bones in mammals
10. The concept of "survival of the fittest" means:
a) Only the strongest individuals survive.
b) Individuals best adapted to the environment survive and reproduce.
c) Evolution occurs only through natural disasters.
d) Evolution happens without any selective pressure.
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Answers
1. c) ATP
2. c) Fermentation
3. b) Mitochondrial matrix
4. c) Oxygen
5. c) Thylakoid membrane
6. b) Jean-Baptiste Lamarck
7. b) The random change in allele frequency in a population
8. b) Show changes in species over time
9. a) Similar wings in bats and birds
10. b) Individuals best adapted to the environment survive and reproduce
This weekly challenge