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 221:
Which of the following is a difference between plant and animal cells?
Options:
A) Plant cells have a nucleus, while animal cells do not
B) Plant cells have a cell membrane, while animal cells have a cell wall
C) Plant cells contain chloroplasts for photosynthesis, while animal cells do not
D) Plant cells have a central vacuole, while animal cells have multiple small vacuoles
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The correct answer is C .
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Question 222: When the adults have reach a certain degree of weakness, the process of binary fission is replaced by conjugation in
Options:
A) Paramecium
B) Euglena
C) Amoeba
D) Plasmodium
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The correct answer is A .
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Question 223: Sting cells are normally found in
Options:
A) Flatworms
B) Hydra
C) Snails
D) Paramecium
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The correct answer is B .
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Question 224:
Which of these combinations is common to plant and animal cells?
Options:
A) Centriole, middle lamella, golgi bodies, mitrochondrion
B) Cytoplasm, sap, vacuole, starch grains, leucoplasts
C) Plasma membranes, chromosomes, mitochondria, lysosomes.
D) Nucleus, nucleolus, cellulose cell wall, endoplasmic reticulum
E) Cytoplasm, centriole, cellulose cell wall, nucleolus
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The correct answer is C .
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Question 225: Night-blindness result from a deficiency of
Options:
A) vitamin E
B) Vitamin A
C) Vitamin K
D) Vitamin C
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The correct answer is B .
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Question 226: Which of the following is the most complex according to their cellular level of organization?
Options:
A) Heart
B) Hair
C) Euglena
D) Hydra
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The correct answer is A .
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Question 227:
Vaccination is carried out in order to
Options:
A) check the production of poison
B) increase the activities of white blood cells
C) increase the number of red blood cells
D) stimulate the production of anti-bodies
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The correct answer is D .
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Question 228:

The endoplasmic reticulum is represented by the part labelled
Options:
A) I
B) II
C) III
D) IV
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The correct answer is D .
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Question 229: The hepatic portal vein is unique because it
Options:
A) carries deoxygenated blood
B) begins and ends with capillaries
C) is the largest vein in mammals
D) carries digested food
E) is the shortest vein in mammals
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The correct answer is D .
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Question 230: The part of the mammalian skin involved in temperature regulation is the
Options:
A) sweat gland
B) hair papilla
C) hair follicle
D) sebaceous gland
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The correct answer is A .