37. Which group of organisms have cell walls made of cellulose?
A. Animals
B. Fungi
C. Bacteria
D. Plants

38. Which hormone regulates metabolism?
A. Insulin
B. Thyroxine
C. Estrogen
D. Testosterone

39. An example of passive immunity is:
A. Vaccination
B. Breast milk antibodies
C. Producing antibodies
D. Infection recovery

40. The part of the brain responsible for balance is the:
A. Cerebrum
B. Medulla
C. Cerebellum
D. Hypothalamus

41. Which reproductive strategy produces fewer offspring with higher survival?
A. Asexual
B. External fertilization
C. K-strategy
D. R-strategy

42. The process of making protein from mRNA is:
A. Replication
B. Transcription
C. Translation
D. Polymerization

43. Which gas is released as a waste product in respiration?
A. Oxygen
B. Carbon dioxide
C. Methane
D. Hydrogen

44. Which of the following diseases is caused by a virus?
A. Tuberculosis
B. HIV/AIDS
C. Malaria
D. Ringworm

45. The movement of organisms into a population is called:
A. Emigration
B. Immigration
C. Evolution
D. Succession

46. Which one is an excretory organ in humans?
A. Heart
B. Lungs
C. Spleen
D. Stomach

47. Which structure in the eye is responsible for focusing light?
A. Retina
B. Cornea
C. Iris
D. Lens

48. In which organ does the digestion of proteins begin?
A. Mouth
B. Stomach
C. Small intestine
D. Liver

49. The smallest living unit of life is the:
A. Tissue
B. Organelle
C. Cell
D. Organ

50. The main function of xylem in plants is:
A. Transport food
B. Transport water
C. Photosynthesis
D. Reproduction


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