NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions


During staravation what will be sequence of ending of food stuffs?

  • Carbohydrate - Fat - Protein

  • Carbohydrate - Protein - Fat

  • Fat - Protein - Carbohydrate

  • Fat - Carbohydrate - Protein


Carbohydrate - Fat - Protein

During starvation reserve carbohydrate is used up firstly by the body and after carbohydrate, fat is used as energy source and at last when both carbohydrate and fat are absent proteins are used as energy source. Therefore, the correct sequence is

Carbohydrate Fat Protein


Which insect is useful for us ?

  • Periplaneta

  • Musca

  • Bombyx

  • Mosquitoes



Bombay mori is a silk producing insect which is reared on mulberry leaves for commercial production of silk. Whereas Mosquito, Musca and Periplanata are harmful Arthropodes.


Which of the following hormone stimulates the gastric secretion ?

  • Enterogastrone

  • Gastrin

  • CCK-PZ

  • Villikinin



Gastrin stimulates the gastric secretion. It is released from the gastric glands.

Enterogasterone is secreted by the duodenal epithelium. It inhibits the secretion of gastric juice and slows gastric contraction.

CCZ- PZ or Cholecystokinin pancreozymin is secreted by entire small intestine. It stimulates the gall bladder to release bile and the pancreas as to release enzymes in the pancreatic juice.

Villikinin accilerates the movement of intestinal villi.


How many ATP are formed by oxidation of one glucose molecular in liver cells ?

  • 36

  • 38

  • 2

  • 8



In liver cells and prokaryotic cells 38 ATP are produced by the complete oxidation of one molecule of glucose.

During glycolysis:

2 ATP directly            - 2 ATP

2 molecules of NADH - 6 ATP

During Pyruvic to Acetyl CoA:

2 molecules of NADH - 6 ATP

Pyruvic acid to Acetyl CoA:

6 molecules of NADH - 18 ATP

2 molecules of FADH - 4 ATP

2 molecules of GTP - 2 ATP

Total number of ATP is 38. Therefore, 38 ATP are produced.


Husband has blood group A and wife has blood group B. What is the blood group of children ?

  • A

  • B

  • AB

  • All A, B, AB or O


All A, B, AB or O

If husband has blood group A and wife has blood group B, the blood group of children could be A, B, AB or O. It is explained in the following figure:


Bowman's capsule is found in :

  • glomerulus

  • uriniferous tubule

  • nephron

  • malpighian capsule


malpighian capsule

Human kidney consists of about one million nephrons. Each nephron in made up of two main parts i.e., malphigian body and reval tubule. Malpighain body comprises a cup shaped Bowman's capsule and a mesh work of blood capillaries, the glomerulus.


If drosal nerve of spinal cord is broken down then its effect is :

  • no impulse is transmitted

  • impulse is transmitted but slowly

  • impulse is trasmitted fast

  • no effect on impulse


no impulse is transmitted

Spinal nerve is a mixed nerve which arises from gray matter of spinal cord. It has two roots. The dorsal root is sensory and the ventral root is motor. If dorsal nerve of spinal cord is broken down, the pathway of nerve will break so, no impulse will be transmitted.


Striped muscles are characterised by

  • syncytial

  • spindle shape

  • uninucleate

  • none of the above



Striated muscle or skeletal muscle or voluntary muscle or striped muscle fibre is an elongated cell surrounded externally by sarcolemma just beneath the sarcolemma in each fibre many nuclei occur at irregualr intervals. Thus these fibres are multinucleated or syncytial in nature.


A haemophilic woman marries a normal man then:

  • all the children will be normal

  • all the sons will be haemophilic

  • all the girls will be haemophilic

  • half girls will be haemophilic


all the sons will be haemophilic

Thus, all sons will be haemophilic.


Number of cranial nerves in frog :

  • 10 pairs

  • 9 pairs

  • 12 pairs

  • none of the above


10 pairs

Ten pairs of cranial nerves are present in anamniotes such as fishes and Amphibians such as frog. Twelve pairs of cranial nerves are present in reptiles, birds and mammals including rabbit and humans.