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 521 Discuss
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Identify the enzyme secreted by the 'Stomach' that helps in the digestion of fats in infants

A
Pepsin
B
Gastric Lipase
C
Trypsin
D
Steapsin

Answer & Explanation

Correct Option: B

Gastric lipase is specifically important for infants to digest the fats found in milk.
Question 522 Discuss
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Which among the following is a 'C4' plant

A
Rice
B
Wheat
C
Maize
D
Potato

Answer & Explanation

Correct Option: C

Maize, Sorghum, and Sugarcane are classic examples of plants using the C4 dicarboxylic acid pathway.
Question 523 Discuss
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The 'Universal' genetic code consists of how many codons

A
20
B
64
C
46
D
32

Answer & Explanation

Correct Option: B

With 4 bases in triplets, there are 4^3 = 64 possible codons, though they only code for 20 amino acids.
Question 524 Discuss
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Which 'Immunoglobulin' is involved in allergic reactions and provides protection against parasitic worms

A
IgG
B
IgA
C
IgE
D
IgD

Answer & Explanation

Correct Option: C

IgE binds to mast cells and basophils, triggering the release of histamine during an allergy.
Question 525 Discuss
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The 'Loop of Henle' is longest in which of the following animals

A
Fresh water fish
B
Desert Rat (Kangaroo Rat)
C
Amphibians
D
Humans

Answer & Explanation

Correct Option: B

Longer loops allow for higher osmotic gradients, enabling desert animals to produce extremely concentrated urine.
Question 526 Discuss
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In the human eye 'Glaucoma' is primarily caused by

A
Opacity of the lens
B
Damage to the optic nerve due to high intraocular pressure
C
Bacterial infection of the conjunctiva
D
Detachment of the retina

Answer & Explanation

Correct Option: B

Excess aqueous humor buildup increases pressure, which can permanently damage the optic nerve.
Question 527 Discuss
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Which specific 'Bacteria' is used in the large scale production of human insulin (Humulin)

A
Agrobacterium tumefaciens
B
Escherichia coli
C
Bacillus thuringiensis
D
Rhizobium leguminosarum

Answer & Explanation

Correct Option: B

Genetically engineered E. coli are used to produce the A and B chains of human insulin separately.
Question 528 Discuss
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Identify the 'Tricky' hormone: Which of the following is an amino-acid derivative

A
Insulin
B
Epinephrine (Adrenaline)
C
Estrogen
D
Glucagon

Answer & Explanation

Correct Option: B

Epinephrine is derived from the amino acid tyrosine; insulin is a protein; estrogen is a steroid.
Question 529 Discuss
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In the human skeletal system 'Suture' joints in the skull are examples of

A
Slightly movable joints
B
Freely movable joints
C
Immovable (Fibrous) joints
D
Synovial joints

Answer & Explanation

Correct Option: C

Sutures provide structural strength by interlocking skull bones with dense fibrous connective tissue.
Question 530 Discuss
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The 'Pleura' is a double-layered membrane that covers the

A
Heart
B
Lungs
C
Kidneys
D
Brain

Answer & Explanation

Correct Option: B

The pleural fluid between the layers reduces friction during lung expansion and contraction.
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