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


4.

The basic unit of chitin is

  • N-acetyl glucosamine

  • glucose

  • galactose

  • fructose


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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


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10.

Which of the following amino acids are present in ornithine cycle

  • Valine and cystine

  • Arginine and citrulline

  • Glycine and methionine

  • None of these


B.

Arginine and citrulline

Ornithine cycle takes place in liver. The amino acid arginine and citrulline are formed during this cycle. Therefore it is referred as ornithine, arginine cycle and also Kreb-Henseleit cycle. The products of this cycle are urea and ornithine. The substances excreted through this cycle are CO2 and NH2


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