SSC CGL Science – Nutrition, Health & Diseases – Tier II Level · Marathon

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SSC CGL Science – Nutrition, Health & Diseases – Tier II Level · Marathon – 12 questions, subject: General Science. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Interferons, which protect non-infected cells, belong to which barrier of innate immunity?

Correct Answer: C [Cytokine barrier]

Explanation:

Answer: Cytokine barrier. Interferons are cytokines.

2.  
Acid in the stomach and tears in the eyes are examples of which barrier?

Correct Answer: B [Physiological barrier]

Explanation:

Physical = skin, mucus; physiological = acid, saliva, tears.

3.  
An antibody molecule is made of:

Correct Answer: B [two heavy and two light chains]

Explanation:

H₂L₂ – four polypeptide chains.

4.  
Which antibody type is present in colostrum?

Correct Answer: D [IgA]

Explanation:

Answer: IgA. Colostrum is rich in IgA.

5.  
In an allergic reaction, mast cells release:

Correct Answer: A [histamine and serotonin]

Explanation:

IgE-triggered mast cells release histamine and serotonin.

6.  
Rejection of a transplanted organ is mainly due to:

Correct Answer: C [cell-mediated immunity (T-cells)]

Explanation:

Graft rejection is cell-mediated.

7.  
Cocaine mainly interferes with the transport of the neurotransmitter:

Correct Answer: D [dopamine]

Explanation:

NCERT: cocaine interferes with dopamine transport.

8.  
Charas, ganja and hashish are obtained from:

Correct Answer: B [Cannabis sativa]

Explanation:

Cannabinoids – Cannabis sativa .

9.  
In the malaria parasite, sexual reproduction (fusion of gametes) takes place in the:

Correct Answer: A [gut of the female Anopheles]

Explanation:

Asexual in humans, sexual in the mosquito.

10.  
The hepatitis B vaccine produced by recombinant DNA technology is made in:

Correct Answer: C [yeast]

Explanation:

NCERT: hepatitis B vaccine from yeast.

11.  
The fish Gambusia is introduced into ponds and tanks to control:

Correct Answer: C [mosquito larvae]

Explanation:

Gambusia eats mosquito larvae – biological control of malaria and dengue.

12.  
Carbon monoxide in tobacco smoke is harmful mainly because it:

Correct Answer: B [reduces the oxygen carried by haemoglobin]

Explanation:

CO binds haemoglobin, cutting oxygen transport.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Science book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-science

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