9
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 to be converted into thrombin in the presence of Ca++ion.

Thrombin combines with fibrinogen  to produce fibrin threads which entangles the corpuscles to form the clot.

Subject: Biology
Exam Prep: AIEEE , GATE
Q:

Who performs the task of capturing oxygen in the blood?

 

A) White blood cells B) Red blood cells
C) Chlorophyll D) Haemoglobin
 
Answer & Explanation Answer: D) Haemoglobin

Explanation:
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Exam Prep: Bank Exams

80 10217
Q:

Which of the following diseases is NOT transmitted from one person to another?

 

A) Syphilis B) Hepatitis B
C) AIDS D) Cirrhosis
 
Answer & Explanation Answer: D) Cirrhosis

Explanation:
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39 7847
Q:

“All the plants and animals are composed of cells and the cell is the basic unit of life”. The given statement is for which of the following theories?

 

A) Theory of evolution   B) Theory of inheritance  
C) Cell theory   D) Theory of natural selection  
 
Answer & Explanation Answer: C) Cell theory  

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Exam Prep: AIEEE , Bank Exams

7 1687
Q:

Rings of ______ are present in the throat to ensure that the air passage does NOT collapse

 

A) Bone   B) Tendon  
C) Ligament   D) Cartilage  
 
Answer & Explanation Answer: D) Cartilage  

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Exam Prep: AIEEE , Bank Exams

9 5733
Q:

Which among the following is the food tube?

 

A) Thymus B) Aorta
C) Larynx D) Oesophagus
 
Answer & Explanation Answer: D) Oesophagus

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9 5350
Q:

What is the junction between an axon ending with the dendrite of another nerve cell called?

 

 

A) Synapse B) Neuron
C) Synaptic Cleft D) Node of Ranvier
 
Answer & Explanation Answer: A) Synapse

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10 6302
Q:

Plants in the ............ group are commonly called algae.

 

A) Bryophyta B) Thallophyta
C) Gymnosperms D) Pteridophyta
 
Answer & Explanation Answer: B) Thallophyta

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12 6711
Q:

Which of the following is an example of a Rhizome?

 

A) Ginger B) Sugarcane
C) Onion D) Potato
 
Answer & Explanation Answer: A) Ginger

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18 7396