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Q:

The enzyme that is necessary to bring about clotting of blood is 

A) peptidase B) amylase
C) lipase D) thrombokinase

Answer:   D) thrombokinase

Explanation:

The clotting of blood is a chain reaction initiated by the enzyme Thrombokinase produced by the platelets. This causes Prothrombin and calcium salts in plasma to join and produce thrombin. Thrombin combines with Fibrinogen to produce Fibrin threads which entangles the corpuscles  to create a clot.

Subject: Biology
Q:

Statement which is true about bacteria ?

A) All bacteria are autotrophs B) Most of them are heterotrophs but some are autotrophs
C) All bacteria heterophs D) All bacteria are photosynthetic
 
Answer & Explanation Answer: B) Most of them are heterotrophs but some are autotrophs

Explanation:
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Q:

Variable number of tandem repeats (VNTRs) in the DNA molecule are highly useful in

A) Recombinant DNA technology B) Monoclonal antibody production
C) Stemcell culture D) DNA fingerprinting
 
Answer & Explanation Answer: D) DNA fingerprinting

Explanation:
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Q:

Which type of Stem modification is seen in banana ?

A) Rhizome B) Stem tuber
C) Corn D) Bulb
 
Answer & Explanation Answer: A) Rhizome

Explanation:
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Q:

In which of the following mammals estrous cycle is absent ?

A) Rabbit B) Horse
C) Cow D) Monkey
 
Answer & Explanation Answer: D) Monkey

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Q:

There are approximately how many muscles in Human body ?

A) 206 B) 310
C) 554 D) 700
 
Answer & Explanation Answer: D) 700

Explanation:

Approximatey there are 700 muscles in Human body.

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