MP Board
Class 12th
Biomolecules
Important MCQ
Objective
Type Questions
1. Choose the correct answer
1. Which protein transports oxygen in blood
flow :
(a) Haemoglobin (b)
Insulin
(c) Albumin (d) Myoglobin.
2.Enzyme which enhances the conversion
of glucose to ethanol is :
(a) Zymase (b) Invertase (c)
Maltase (d) Diastase.
3. In human body carbohydrate is stored
:
(a) In the form of glucose (b) In the form of glycogen
(c) In the form of starch (d) In
the form of fructose.
4. Change in optical rotation of a
freshly prepared solution of sugar after some time is called :
(a) Optical activity (b) Inversion
(c) Specific rotation (d)
Mutation.
5. Formula of most familiar disachharide
is :
(a) C10H18O9 (b)
C10H12O10
(c) C18H22O11 (d) C12H22O11.
6.The following statement is false in
relation to Ribose
(a) It is a polyhydroxy compound
(b) It is a aldehydic sugar
(c) It contain 6 carbon atoms
(d) It has optical rotation.
7. How many subunits are present in
haemoglobin :
(a) 2 (b) 3 (c) 4 (d) 5.
8. Starch is polymer of :
(a) Glucose (b)
Sucrose
(c) Both (a) and (b) (d)
None of these.
9. Which sugar is present in maximum
amount in human blood :
(a) Fructose (b) d – glucose (c) Sucrose (d) Lactose.
10. Element present in vitamin B12 is :
(a) Pb (b) Zn
(c) Fe (d) Co.
11. Amount of glucose in blood is determined
by :
(a) Tollen’s reagent (b) Benedict’s solution
(c) Alkaline iodine
solution (d) Bromine water.
12. Vitamin B, is
(a) Riboflavin
(b) Cobaltamine (c) Thiamine (d) Pyrimidine.
13. Deficiency of Vitamin C leads to :
(a) Scurvy (b) Rickets (c)
Pyorrhoea (d) Anaemia.
14. Most effective energy reservoir in
all living cells is
(a) A.M.P. (b) A.T.P. (c) A.D.P. (d) U.D.P.
15. Disaccharide present in milk is :
(a) Sucrose n (b)
Lactose (c) Maltose
(d) Cellulose.
16. Which is not glyceroid
(a) Fat (b) Oil (c) Phospholipid (d) Soap.
17. Which is not found in R.N.A.
(a) Thymine (b) Uracil (c) Adenine
(d) Guanine.
18.Deficiency of which vitamin causes
Rickets
(a) Vitamin C (b) Vitamin B (c) Vitamin A (d)
Vitamin-D
19. Which of the following is an acid Vitamins
:
(a) Aspartic acid (b) Ascorbic acid
(c) Adipic acid (d)
Saccharic acid.
20. Beri-beri disease is caused due to
deficiency of which vitamin:
(a) Vitamin – A (c)
Vitamin - C
(b) Vitamin – B (d)
Vitamin - D.
21. Enzyme which enhances the conversion of glucose
to ethanol is : Zymase
22. Carbohydrates are stored in the human body:
(a) As glucose (b) As
glycogen
(c) As starch (d)
As fructose.
23. Hemoglobin is a/an :
(a) Enzyme (b) Globular protein
(c) Vitamins (d) Carbohydrate.
24. Pyorrhea disease is caused by deficiency
of which vitamin
(a) Vitamin – A (b)
Vitamin – B
(c) Vitamin – C (d) Vitamin - D.
Q. 2. Fill in the blanks :
1. Glucose is a ........ saccharide containing six carbons.(Mono)
2. The bond formed by the interaction of amino group and
carboxylic group is called ............. (Peptide)
3. Denaturation does not affect the ........ structure of
protein. (Primary)
4. Protein is a polymer of.............. (Amino
acids)
5. ........... is not present in D.N.A. (Uracil
base)
6. Vitamin-A deficiency causes eye disease called
(Night blindness)
7. ......... helps in making blood clot. (Fibrinogen)
8. Deficiency of Iodine causes (Goiter)
9. .............. hormone balances the amount of sugar in the
blood.(Insulin)
10. In the oxidation of glucose.............. molecules of ATP
are produced. (38)
11.The breaking of complex molecules in organisms is known as
……………… (Catabolism)
12.In hyperglycemia the amount of ……………… in blood increases. (Sugar)
13.Deficiency of ………………leads to eye disease(Vitamin
A)
14.Blood ……………… the temperature of the entire body (Balance)
15.……………… hormone balances the amount of sugar in blood. (Insulin)
16.……………… is responsible for the clotting of blood (Vitamin
K)
17.……………… is the basic unit of protein. (Amino
Acids)
18.……………… is not present in D.N.A. Uracil
19.Haemoglobin is a ……………… compound of iron. Complex
20.Oils and fats obtained from plants and animals (organisms)
are called ……………… Lipids.
3. Match the following:
'A' 'B'
1. Hemoglobin (b) Protein
2. Lactose (c) Milk
3. Valine (f) Amino acid.
4. Glucose (a)
Mono saccharide
5. Ribose sugar (d) R.N.A.
6. Dioxy Ribose sugar (e)
D.N.A.
Answer in one word/sentence :
1. Write the chemical name of Vitamin C.
Ascorbic acid
2.
Tell the source of
Vitamin K.
Green leafy vegetables
3.
Is responsible for
clotting of blood?
Vitamin K (Phylloquinone)
4.
Which bond links amino
acids together?
Peptide bond
5. How many amino acids are synthesized by human
body? Ten
6.
Cellulose is a linear
polymer of which glucose?
β –
glucose
7. In RNA molecule which pyrimidine is present in
place of Thymine? Uracil
8. Lactose on hydrolysis gives. Glucose
and Lactose
9. Glucose contains Pyranose ring whereas
Fructose contain. Furanose ring
10.
In
polysaccharides, monosaccharide units are linked to each other by which bond? Glycosidic
11.
Which
protein helpful for clotting of blood known as?
Fibrinogen
12.
Write one example of
Monosaccharide Carbohydrate. Glucose or fructose
13.
What is the name of
Disaccharides sugar present in milk? Lactose.
