Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

ADH controls water permeability of

  • collecting tube

  • proximal convoluted tubules

  • distal convoluted tubules

  • all of the above


2.

At high altitude, RBC's of human blood will

  • increase in number

  • decrease in number

  • decrease in size

  • increase in size


3.

Enzymes are absent in

  • algae

  • plants

  • virus

  • bacteria


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4.

The basic unit of chitin is

  • N-acetyl glucosamine

  • glucose

  • galactose

  • fructose


A.

N-acetyl glucosamine

The chitin (polyglycosamine) is an acetate of mucopolysaccharide called glycosamine which is formed by the combination of polysaccharide with small peptide molecules. The basic unit (monomer) of chitin is N-acetylglucosamine, monomers are joined by 1-4 β linkages.


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5.

Striped muscles are

  • anucleate

  • binucleate

  • uninucleate

  • syncytial


6.

Ventricles are related to

  • heart only

  • brain only

  • both 'a' and 'b'

  • none of these


7.

Arachidonic acid is

  • non-essential fatty acid

  • essential fatty acid

  • poly unsaturated fatty acid

  • both 'b' and 'c'


8.

What type of enzyme are present in lysosome

  • ATPase

  • Hydrolytic

  • Lyase

  • None of these


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9.

The true stomach in ruminants where most of digestion takes place is

  • rumen

  • omasum

  • reticulum

  • abomasum


10.

Which of the following amino acids are present in ornithine cycle

  • Valine and cystine

  • Arginine and citrulline

  • Glycine and methionine

  • None of these


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