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 661: In eukaryotic cells,cellular respiration takes place in the
Options:
A) nucleus
B) cytoplasm
C) centrioles
D) mitochondrion
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The correct answer is D .
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Question 662: Free nitrogen is released to the atmosphere by
Options:
A) Nitrogen-fixing bacteria
B) nitrifying bacteria
C) denitrifying bacteria
D) saprophytic bacteria
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The correct answer is C .
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Question 663: The dental formula of a i(3/3); c(1/1); pm(4/4; m(2/3) = 42 represent that of a
Options:
A) rabbit
B) full grown man
C) young child
D) dog
E) sheep
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The correct answer is D .
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Question 664:
The hormones secreted by pancreas serves to
Options:
A) Facilitate the development of facial hairs
B) Raise the level of calcium in the blood
C) Lower blood glucose level
D) Make the body react to emergencies
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The correct answer is C .
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Question 665: Excretory products responsible for the red, purple and blue colours of flowers are called
Options:
A) alkaloid
B) tannins
C) anthocyanins
D) resins
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The correct answer is C .
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Question 666: Rhizopus (or mucor)obtain its food from dead organic matter extracellularly. It is said to be
Options:
A) a facultative parasite
B) saprophyte
C) an obligate parasite
D) a commensal
E) an autotroph
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The correct answer is B .
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Question 667: which of the following is true of cloning?
Options:
A) it is welcomed as an ethical and morally sound science
B) only one cell of the original organism is needed to initiate the process
C) the clone is similar to but not exactly like the original organism
D) it involves the asexual multiplication of the tissues of the original organism
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The correct answer is D .
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Question 668: The function of the fluid - filled pericadium is to
Options:
A) reduce the friction caused by the pumping movements of the heart
B) supply the heart with organisms from attacking the heart
C) prevent disease organism from attacking the heart
D) reduce the intensity of the pumping
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The correct answer is A .
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Question 669:
The gland usually found in the position labelled I is the
Options:
A) adrenal
B) thyriod
C) pancreatic
D) pituitary
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The correct answer is D .
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Question 670:
The function of the absorption is performed by the structure labelled
Options:
A) I
B) II
C) III
D) IV
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The correct answer is B .