- Read the given statement and select the option that correctly
identifies X and Y.
In a glycogen molecule, successive glucose units are joined
together by X and branches are linked together by Y.
X Y
(a) 1, 4-a-glycosidic bonds 1, 4-a-glycosidic acids
(b) 1, 4-a-glycosidic bonds 1, 6-a-glycosidic bonds
(c) 1,6-a-glycosidic acids 1, 4-a-glycosidic acids
(d) 1, 6-a-glycosidic acids 1, 6-a-glycosidic acids
- Match column-I with column-I I and select the correct option
from the codes given below.
Column-I Column-II
(Category) (Secondary metabolites)
A. Pigments (i) Concanavalin A
B. Terpenoides (ii) Monoterpenes, diterpenes
C. Alkaloids (iii) Morphine, codeine
D. Lectins (iv) Carotenoids, anthocyanins
(a) A-(iv), B-(ii), C- (iii), D-(i)
(b) A-(iv), B-(iii), C- (ii), D-(i)
(c) A-(i), B-(iv), C- (iii), D-(ii)
(d) A-(i), B-(iii), C-(ii), D-(iv)
- Which of the following is a saturated fatty acid?
(a) Oleic acid (b) Linoleic acid
(c) Arachidonic acid (d) Palmitic acid
- Function of the protein GLUT–4 is to
(a) fight infection
(b) help in sensory reception
(c) enable glucose transport into cells
(d) act as a hormone.
- Which of the following are nucleosides?
- Adenine 2. Uridine
- Thymine 4. Guanosine
(a) 1 and 2 (b) 3 and 4
(c) 2 and 4 (d) 1 and 4
31. The acid insoluble fraction has only fours types of organic
compound. Which of the following molecules in acid
insoluble fractions are not polymeric?
(a) Proteins
(b) Nucleic acid
(c) Polysaccharides
(d) Lipids
32. Which of the following statement about polysaccharide is
incorrect?
(a) Cotton fibre is cellulose.
(b) Inulin is a polymer of fructose.
(c) Chitin is a homopolymer of N–acetyl galactosamine.
(d) Starch is a homopolymer.
33. Catalytic cycle of enzyme can be described by the following
step.
- Substrate binds to the active site of the enzyme.
- Active site of the enzyme breaks the chemical bond of
the substrate forming a new enzyme–product complex.
- Shape of the enzyme is altered due to binding of the
substrate.
- Product of the reaction is released.
What is the correct sequence of enzyme action?
(a) 1 → 2 → 3 → 4 (b) 1 → 3 → 2 → 4
(c) 2 → 1 → 3 → 4 (d) 2 → 3 → 1 → 4
- Most abundant protein in animal word is
(a) Collagen (b) Trypsin
(c) Insulin (d) RUBISCO.
- During an enzymatic reaction, Km was calculated. The value
of Km came out to be 10–5. It indicates
(a) enzyme is deactivated.
(b) enzyme has high affinity for its substrate.
(c) enzyme has low affinity for its substrate.
(d) none of the above.
- In the given graph A, B, C and D are the action spectra of
four enzymes. The enzymes are
ABCD
2 4 6 8 10
pH
Reaction Velocity
(a) A-Sucrase, B-Pepsin, C-Amylase, D-Trypsin
(b) A-Pepsin, B-Sucrase, C-Trypsin, D-Amylase
(c) A-Pepsin, B-Sucrase, C-Amylase, D-Trypsin
(d) A-Pepsin, B-Amylase, C-Sucrase, D-Trypsin
- Cells obtained from an organism were homogenised
and centrifuged. A test indicated that the cells contained
glycogen. If you were asked to find out as quickly as possible
whether the cells were from a plant or an animal, you
would
(a) examine the centrifuge for the presence of extracts of
chloroplasts
