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 Biology Questions

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Q:

Which among the following do NOT have a perfect pair of sex chromosomes?

A) Only men B) Only women
C) Both men and women D) Neither men nor women
 
Answer & Explanation Answer: A) Only men

Explanation:
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Q:

___________ being a higher category, is the assemblage of families which exhibit a few similar characters.

A) Order B) Species
C) Genus D) Class
 
Answer & Explanation Answer: A) Order

Explanation:
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Q:

According to Erikson, the goal of adolescence is to

A) independent identity B) explore who they are
C) both a & b D) None of the above
 
Answer & Explanation Answer: C) both a & b

Explanation:

According to psychologist Erik Erikson, Adolescence is the period of life between childhood and adulthood. They go through the psychosocial crisis of identity versus role confusion, which involves exploring who they are as individuals. During this stage, adolescents explore their independence and develop a sense of self i.e independent identity, ego nature.

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Q:

The first step of process of nutrition is the breakdown of glucose into a three-carbon molecule called ______.

A) pyruvate B) propano
C) propane D) methanol
 
Answer & Explanation Answer: A) pyruvate

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Q:

Select the correct statement about immune system?

A) The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins B) The most common form of immunodeficiency is graft­versus­host (GVH) disease
C) Severe combined immunodeficiency (SCID) disease is an acquired condition D) Hodgkin's disease is a hereditary immunodeficiency found in children
 
Answer & Explanation Answer: A) The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins

Explanation:

Among the given options, the correct statement about immunodeficiency is "The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins".

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Q:

Which organ gets affected in Weil's disease?

A) Liver B) Lungs
C) Heart D) Kidney
 
Answer & Explanation Answer: D) Kidney

Explanation:
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Q:

Mitochondrial DNA analysis is best suited for

A) analysis in which only a minute quantity of DNA material is available B) Forensic science analysis
C) analysis requiring greater discriminatory power than STR D) All of the above
 
Answer & Explanation Answer: B) Forensic science analysis

Explanation:

Mitochondrial DNA analysis is best suited for Forensic science analysis.

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Q:

Some niacin is formed in the body from

A) Liver B) Skin
C) Appendix D) None of the above
 
Answer & Explanation Answer: A) Liver

Explanation:

Niacin is the name for vitamin(B3).

 

Liver can produce small amount of niacin from tryptophan.

 

To produce 1 mg of niacin we require 60 mg of tryptophan.

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