General Science Jkssb Biology Set 1 Mcqs (605 MCQs) | JKSSB & SSC Quiz

General Science

jkssb biology set 1 mcqs

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Practice Questions

605 Total
Question 361 Discuss
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Which part of the human eye is transplanted during 'Corneal Transplantation'

A
Lens
B
Retina
C
Cornea
D
Iris

Answer & Explanation

Correct Option: C

The cornea is the transparent front part of the eye that can be replaced if it becomes scarred or diseased.
Question 362 Discuss
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Identify the incorrect statement regarding 'Enzymes'

A
They are proteinaceous in nature
B
They are consumed during the chemical reaction
C
They lower the activation energy of the reaction
D
They are temperature and pH sensitive

Answer & Explanation

Correct Option: B

Enzymes act as catalysts; they participate in but are not consumed or changed by the reaction.
Question 363 Discuss
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The process by which DNA creates an RNA copy is known as

A
Replication
B
Transcription
C
Translation
D
Reverse Transcription

Answer & Explanation

Correct Option: B

Transcription occurs in the nucleus where a segment of DNA is copied into mRNA by RNA polymerase.
Question 364 Discuss
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Which of the following is a symptom of 'Sickle Cell Anemia'

A
Excessive bleeding from small cuts
B
Abnormal hemoglobin causing crescent-shaped RBCs
C
High white blood cell count
D
Failure of liver function

Answer & Explanation

Correct Option: B

A point mutation in the beta-globin gene causes RBCs to become stiff and sickle-shaped, blocking blood flow.
Question 365 Discuss
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The human 'Tailbone' is scientifically known as the

A
Sacrum
B
Coccyx
C
Femur
D
Tibia

Answer & Explanation

Correct Option: B

The coccyx is a small, triangular bone at the base of the spinal column and is a vestigial structure.
Question 366 Discuss
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Which endocrine gland is active in childhood but shrinks significantly after puberty

A
Thyroid gland
B
Thymus gland
C
Adrenal gland
D
Pituitary gland

Answer & Explanation

Correct Option: B

The thymus is essential for T-cell development in early life and undergoes atrophy (involution) as one ages.
Question 367 Discuss
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Which of the following is the 'Universal Recipient' blood group

A
O Positive
B
AB Positive
C
O Negative
D
AB Negative

Answer & Explanation

Correct Option: B

AB positive blood lacks antibodies for A, B, and Rh, allowing it to receive any blood type safely.
Question 368 Discuss
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In the process of 'Glycolysis' one molecule of glucose is broken down into

A
Two molecules of Ethanol
B
Two molecules of Pyruvate
C
One molecule of Lactic acid
D
Six molecules of CO2

Answer & Explanation

Correct Option: B

Glycolysis occurs in the cytoplasm and yields a net of 2 ATP and 2 Pyruvate molecules.
Question 369 Discuss
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The primary component of 'Honey' is which type of sugar

A
Sucrose
B
Maltose
C
Fructose
D
Galactose

Answer & Explanation

Correct Option: C

Honey is a mixture of sugars, primarily fructose and glucose.
Question 370 Discuss
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The 'Montreal Protocol' signed in 1987 is primarily related to

A
Global Warming
B
Ozone layer depletion
C
Biodiversity conservation
D
Wetlands protection

Answer & Explanation

Correct Option: B

This international treaty was designed to phase out the production of substances responsible for ozone depletion.
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