Biology Questions

Q:

The amount of blood filtered together by both the kidneys in a 70 kg adult male human in a minute is

A) 1100 ml B) 100 ml
C) 1500 ml D) 500 ml
 
Answer & Explanation Answer: A) 1100 ml

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Q:

Molecular clocks are based on the idea that _____.

A) On average neutral mutations arise at a constant rate B) Directional selection occurs at a constant rate
C) Mutations occur once every generation D) Molecules resonate at a certain frequency that can be measured
 
Answer & Explanation Answer: C) Mutations occur once every generation

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Q:

Ethylene is a ______ molecule.

A) polar B) ionic
C) covalent D) nonpolar
 
Answer & Explanation Answer: D) nonpolar

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Q:

Path a secretory protein follows from synthesis to secretion :

Answer

Protein syntehsis, endoplasmic reticulum, cis golgi cisternae, medial golgi cisterna, trans golgi cisterna, plasma membrane, extracellular space

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Q:

___________ is a straw coloured, viscous fluid constituting nearly 55 per cent of the blood.

A) Plasma B) Formed Elements
C) Blood Groups D) Coagulation of Blood
 
Answer & Explanation Answer: A) Plasma

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Q:

Which type of permanent tissue helps the aquatic plants to float?

A) Aerenchyma B) Collenchyma
C) Sclerenchyma D) No option is correct
 
Answer & Explanation Answer: A) Aerenchyma

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Q:

A human body works within the pH range of

A) 6.0 to 7.0 B) 6.0 to 6.8
C) 7.0 to 8.6 D) 7.0 to 7.8
 
Answer & Explanation Answer: D) 7.0 to 7.8

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Q:

Which among the following 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: B) Only women

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