Biological Molecules(Biology ) Questions and answers for exam Preparation

Question 1. Most abundant compound also known as medium of life is

air
oxygen
water
food

Explanation:-

Answer: Option C. -> water
Answer: (c).water

Question 2. Cellulose is highly insoluble in water and is not digested in digestive tract of

human
birds
protozoa's
insects

Explanation:-

Answer: Option A. -> human
Answer: (a).human

Question 3. Due to its unique properties carbon can react with many known elements forming

covalent bond
ionic bond
coordinate covalent bond
hydrogen bond

Explanation:-

Answer: Option A. -> covalent bond
Answer: (a).covalent bond

Question 4. A valuable and most important quality of proteins is to prevent blood loss after an injury by process of

(coagulation)blood clotting
cell division
imputation
glycolysis

Explanation:-

Answer: Option A. -> (coagulation)blood clotting
Answer: (a).(coagulation)blood clotting

Question 5. Proteins comprises off total dry weight in a cell which is over

60%
50%
70%
40%

Explanation:-

Answer: Option B. -> 50%
Answer: (b).50%

Question 6. A mammalian cell contains 18% of

water
proteins
ions
fats

Explanation:-

Answer: Option B. -> proteins
Answer: (b).proteins

Question 7. Lipids which are composed of glycerol and fatty acids are called

Acylglycerols
waxes
phospholipids
glycolipids

Explanation:-

Answer: Option A. -> Acylglycerols
Answer: (a).Acylglycerols

Question 8. A compound which is responsible for structure of membranes of cell and its organelles is a

lipid
proteins
fats, glucose, starch
waxes

Explanation:-

Answer: Option A. -> lipid
Answer: (a).lipid

Question 9. Tertiary conformation of proteins is maintained by 3 types of bonds namely ionic, hydrogen and

sulphide
disulphide
covalent
peptide

Explanation:-

Answer: Option B. -> disulphide
Answer: (b).disulphide

Question 10. Clycylalanine is a

dipeptide
monopepttide
polypeptide
tertrapeptide

Explanation:-

Answer: Option A. -> dipeptide
Answer: (a).dipeptide