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 81 Discuss
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Excessive bleeding from wounds may happen due to lack of .

A
Vitamin A
B
Vitamin C
C
Vitamin K
D
Vitamin D

Answer & Explanation

Correct Option: C

Vitamin K medically plays an absolutely critical, undeniable role in effectively synthesizing key physiological blood-clotting proteins, so a severe deficiency can easily and dangerously lead to totally uncontrolled, heavy bleeding from minor traumatic wounds.
Question 82 Discuss
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What is the primary function of the excretory system in animals?

A
Removal of waste products
B
Respiration
C
Reproduction
D
Digestion

Answer & Explanation

Correct Option: A

The entire excretory system is biologically, functionally designed to effectively and continuously filter circulating blood and safely eliminate highly toxic cellular metabolic waste byproducts to carefully maintain vital internal chemical homeostasis.
Question 83 Discuss
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Epilepsy is a disorder that affects which of the following parts of the human body?

A
Heart
B
Brain
C
Liver
D
Kidneys

Answer & Explanation

Correct Option: B

Epilepsy is a severe, chronic central nervous system neurological disorder wherein highly abnormal, surging electrical brain activity spontaneously and unpredictably triggers totally recurrent physical seizures and temporary, startling loss of conscious awareness.
Question 84 Discuss
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Which of the following statements are correct about Ribosomes? Statement A: Ribosomes have no membrane. Statement B: Digestive hydrolytic enzymes are present in Ribosomes. Statement C: These are called suicidal bags. Statement D: Ribosomes play an important role in protein synthesis.

A
Only statements A and D
B
Only statements A, B and C
C
Only statements A and B
D
Only statements A and C

Answer & Explanation

Correct Option: A

Ribosomes fundamentally and exclusively act as the primary, highly busy molecular machines for effectively synthesizing necessary cellular protein (Statement D) and are visibly, entirely devoid of any surrounding lipid membrane (Statement A).
Question 85 Discuss
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Which of the given options is rod-shaped, carries genetic information, is visible only at cell division and is present in the nucleus?

A
Ribosomes
B
Chromosomes
C
Lysosomes
D
Cytoplasm

Answer & Explanation

Correct Option: B

Chromosomes are heavily condensed, tightly and neatly coiled, rod-like microscopic structures of DNA and associated protein that physically carry hereditary genetic information clearly and brightly visible only during active cellular replication.
Question 86 Discuss
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Analgesic medicines act on which of the following tissues to relieve pain?

A
Adipose tissue
B
Collenchyma tissue
C
Epithelial tissue
D
Nervous tissue

Answer & Explanation

Correct Option: D

Analgesic medicines are painkillers that specifically target and act on the nervous system to block or reduce pain signals. Therefore, their primary target is nervous tissue.
Question 87 Discuss
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Chili peppers produce a burning sensation in any tissue with which they come into contact. What is the compound responsible for this?

A
Acetic acid
B
Capsaicin
C
Lycopene
D
Formic acid

Answer & Explanation

Correct Option: B

Capsaicin is the active chemical compound naturally found in chili peppers that binds to pain receptors in human tissue, causing the characteristic burning sensation.
Question 88 Discuss
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If the body of an animal can be divided into two indistinguishable left and right halves through only one plane, then it possesses:

A
radial symmetry
B
centre of symmetry
C
asymmetricity
D
bilateral symmetry

Answer & Explanation

Correct Option: D

Bilateral symmetry refers to a physiological body plan where an organism can be divided into identical left and right halves strictly along a single sagittal plane.
Question 89 Discuss
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Which of the following possesses the largest isolated single cell?

A
Human brain
B
Amoeba
C
Blue whale
D
Ostrich egg

Answer & Explanation

Correct Option: D

An unfertilized ostrich egg is biologically considered the largest isolated single cell in the world, measuring up to 6 inches in diameter.
Question 90 Discuss
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The percentage of pore space between the particles inside a rock or soil is called:

A
Permeability
B
Salinity
C
Density
D
Porosity

Answer & Explanation

Correct Option: D

Porosity is the standard geological measure of the void or empty pore spaces inside a material like rock or soil, expressed as a percentage of its total volume.
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