CSAT Prelims Biology - General Knowledge Questions and Answers for UPSC Exam | Page-15

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Questions
141 With reference to the blood in a normal person, which one of the following statements is correct?
A The blood has more platelets than WBC
B White blood cells (WBC) are made by lymph nodes only
C Blood cells constitute about 70 percent of the total volume of the blood
D Compared to arteries, veins are less numerous and hold less of the body’s blood at any given time

Answer: Option [A]
142 The hormone insulin is a
A sterol
B peptide
C fatty acid
D glycolipid

Answer: Option [B]
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143 Foot and Mouth disease in animals, a current epidemic in some parts of the world, is caused by
A virus
B fungus
C protozoan
D bacterium

Answer: Option [A]
144 Consider the following statements:
I. Molasses is a by-product of sugar production process.
II. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories.
III. Sugar can only be produced from sugarcane as the raw material.

Which of the statements are correct?

A I and II
B II and III
C I and III
D I, II and III

Answer: Option [A]
145 Phytotron is a facility to
A conserve endangered species of plants
B grow plants under disease-free condition
C grow plants under controlled conditions
D induce mutations

Answer: Option [C]
146 Consider the following animals:
I. Sea cow
II. Sea horse
III. Sea lion

Which of the minerals given above is/are required by human body for the contraction of muscles?

A I only
B I and III only
C II and III only
D I, II and III

Answer: Option [B]
147 In the context of genetic disorders, consider the following: A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probably correct?
A Both children suffer from colour blindness
B Both children do not suffer from colour blindness.
C Daughter suffers from colour blindness while son does not suffer from it.
D Son suffers from colour blindness while daughter does not suffer from it.

Answer: Option [D]
148 Ergotism is due to consumption of
A rotting vegetables
B contaminated water
C contaminated grains
D safe cooked food

Answer: Option [C]
149 The complete conversion of glucose, in the presence of oxygen, into carbon dioxide and water with release of energy is called
A hydrolysis
B glycolysis
C aerobic respiration
D anaerobic respiration

Answer: Option [C]
150 The cellular and molecular control of programmed cell death is known as
A necrosis
B degeneration
C ageing
D apoptosis

Answer: Option [D]

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