Vitamin-$C$ is primarily helpful in .......

Which of the following vitamins acts as a primary antioxidant?

Given below are two statements:
Statement $I$: Low temperature preserves the enzyme in a temporarily inactive state,whereas high temperature destroys enzymatic activity because proteins are denatured by heat.
Statement $II$: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme,it is known as a competitive inhibitor.
In the light of the above statements,choose the correct answer from the options given below:

$A$ deficiency of which of the following causes continuous bleeding from an injured part of the body?

In the liver,glucose is converted into glycogen,which is stored in the ....... .

Find out a qualitative test for proteins,fats and oils,amino acids and test any fruit juice,saliva,sweat and urine for them.