ADH controls water permeability of

• collecting tube

• proximal convoluted tubules

• distal convoluted tubules

• all of the above

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

The basic unit of chitin is

• N-acetyl glucosamine

• glucose

• galactose

• fructose

Striped muscles are

• anucleate

• binucleate

• uninucleate

• syncytial

Ventricles are related to

• heart only

• brain only

• both 'a' and 'b'

• none of these

Arachidonic acid is

• non-essential fatty acid

• essential fatty acid

• poly unsaturated fatty acid

• both 'b' and 'c'

What type of enzyme are present in lysosome

• ATPase

• Hydrolytic

• Lyase

• None of these

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

• rumen

• omasum

• reticulum

• abomasum

Which of the following amino acids are present in ornithine cycle

• Valine and cystine

• Arginine and citrulline

• Glycine and methionine

• None of these