Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.
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Question 431: The center for controlling body temperature in the brains is the
Options:
A) cerebrum
B) cerebellum
C) medulla
D) hypothalamus
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The correct answer is D .
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Question 432: Anaerobic respiration in yeast produces
Options:
A) Carbondioxide and ethanol
B) Carbondioxide and water
C) Carbondioxide and oxygen
D) Carbondioxide and glucose
E) Ethanol and water
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The correct answer is A .
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Question 433: Which of the following cell constituents is NOT common in both plants and animals?
Options:
A) Mitochondria
B) Chloroplast
C) Ribosomes
D) Golgi apparatus
E) Vacuoles
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The correct answer is B .
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Question 434: The lowest unit of classification is the
Options:
A) class
B) genus
C) phylum
D) species
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The correct answer is D .
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Question 435: The theory of survival of the fittest was propounded by …..
Options:
A) Darwin
B) Hooke
C) Lamarck
D) Linnaeus
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The correct answer is A .
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Question 436:

What is the part marked X in the figure above called?
Options:
A) Pulmonary artery
B) Pulmonary vein
C) Vena cava
D) Main aorta
E) Hepatic artery
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The correct answer is A .
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Question 437:

In the diagram, the likely pollinating agent of the flower is
Options:
A) wind
B) water
C) insect
D) man
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The correct answer is C .
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Question 438: A pyramid of numbers can be defined as
Options:
A) the number of plants and animals in an ecosystem
B) an arrangement of organism according to their habitat
C) the numerical relationships of a food chain
D) the number of plants and animals in a population
E) the total number of species and general in a community
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The correct answer is C .
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Question 439: Haemophilia results from the mutation of the genes
Options:
A) in the sex chromosome
B) which control skin colour
C) which control the mechanism for blood-clotting
D) which control the formation of haemoglobin
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The correct answer is C .
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Question 440: The gland directly affecting metabolic rate, growth and development is known as
Options:
A) adrenal land
B) thyroid gland
C) mammary gland
D) parathyroid gland
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The correct answer is B .