NEET Practice Questions (MCQs) with Answers & Solutions

Adenine = Pyrimidine, Uracil= Purine

Adenine= Purine, Uracil= Purine

Adenine= Adenylic acid, Uracil=Uridylic acid

Adenine= Purine, Uracil= Pyrimidine

All the elements present in a sample of earth’s crust are also present in a sample of living tissue

Carbon and Hydrogen are  present in more amount in any living organism than earth’s crust.

Carbon and Hydrogen are present in more in living organisms than in non living matter.

All of the above

C>O>H>N

C>O>N>H

O>C>H>N

O>C>N>H

acid insoluble fraction

acid soluble fraction

retentate

Both A and C

Sulphates and phosphates are seen in acid soluble pool

Sulphates and phosphates are seen in acid insoluble pool

All carbon compounds that we get from living tissue can be called as biomolecules

Elemental analysis gives elemental composition of the living tissues.

Carbohydrates

Proteins

Water

Lipids

All enzymes are proteins

All proteins are enzymes

Nucleic acids never behave as enzymes

Almost all enzymes are proteins

Almost all enzymes are proteins

All enzymes are proteins except ribozymes

All enzymes are bio-catalyst

All of these

Physical change refers to change in shape without breaking the bonds

Change in state of matter also takes place in physical change

Chemical change involves breaking of old bonds and formation of new ones.

All of these

Rate of physical or chemical process refers to the amount of product formed per unit time.

Rate can also be called as velocity of the reaction

Rate of reaction is influenced by temperature.

All of these