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 21: The greatest amount of energy will be obtained by the oxidation of 100kg of
Options:
A) meat
B) butter
C) sugar
D) biscuits
Show Answer
The correct answer is B .
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Question 22: Which of the following ions is involved in the conduction of the nerve impulse?
Options:
A) Ca2+
B) K+
C) H+
D) Mg2+
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The correct answer is B .
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Question 23:

Which parts provide food for the developing chick?
Options:
A) 2 and 3
B) 4 and 5
C) 3 and 4
D) 2 and 5
E) 1 and 2
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The correct answer is C .
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Question 24: Which of the following is a feature of the population pyramid of a developing country?
Options:
A) long lifespan
B) low birth rate
C) low death rate
D) short lifespan
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The correct answer is C .
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Question 25: The respiratory organ in the land snail is the
Options:
A) radula
B) mantle
C) tentacle
D) foot
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The correct answer is D .
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Question 26: The theory of natural selection was developed by
Options:
A) Lamarck and Darwin
B) Darwin and Wallace
C) Wallace and Mendel
D) Mendel and Larmack
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The correct answer is B .
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Question 27:
The organic molecule(s) present in the nucleus is/are
Options:
A) DNA
B) Protein, DNA, RNA
C) ATP and RNA
D) RNA
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The correct answer is A .
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Question 28: The first four children of a couple were all girls. The probability that the fifth will also be a girl is
Options:
A) 1/5
B) 1/4
C) 1/3
D) 1/2
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The correct answer is D .
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Question 29: Which of the following is a polysaccharide?
Options:
A) Glucose
B) Sucrose
C) Maltose
D) Cellulose
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The correct answer is D .
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Question 30:
I. Rattusrattus. Il. Agama agama III. Bufo regularis IV. Tilapiazillii
The order of evolutionary advancement of the above vertebrates is?
Options:
A) I, II, III, IV
B) I, IV, III, II
C) II, III, IV, I
D) IV, III, II, I
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The correct answer is D .