1. Living state is
a) Non-equilibrium, non-steady state
b) Equilibrium, steady state
c) Non-equilibrium, steady state
d) Equilibrium, non-steady state
Explanation: Living state is non-equilibrium, steady state
2. Select the correct statement from the following:
(A) Biomolecules are in metabolic flux in living state.
(B) Living process is a constant effort to prevent falling into equilibrium.
(C) Metabolism provides a mechanism for the production of energy.
(D) Living state and metabolism is synonymous.
a) All except A
b) All except B
c) All except D
d) All of these
Explanation: All of these
3. In how many metabolic steps the degradation of glucose to lactic acid occurs?
a) 8
b) 9
c) 10
d) 2
Explanation: 10
4. How do living organisms derive their energy? What strategies have they evolved? How do
they store this energy and in what form? How do they convert this energy into work? These
aspects are studied under a sub-discipline called
a) Biowar
b) Bioinformatics
c) Bioenergetics
d) Biosynthesis
Explanation: Bioenergetics
5. Almost all enzymes are
a) Proteins
b) Nucleic acid
c) Carbohydrates
d) Vitamins
Explanation: Almost all enzymes are Proteins
6. There are some nucleic acids that behaves like enzymes and are called
a) DNase
b) RNase
c) Endonuclease
d) Ribozymes
Explanation: There are some nucleic acids that behaves like enzymes and are called Ribozymes
7. _________ of an enzyme is a crevices or pocket into which substrate fit.
a) Inactive site
b) Active site
c) Allosteric site
d) Any of these
Explanation: Active site of an enzyme is a crevices or pocket into which substrate fit.
8. Select the incorrect statement from the following:
a) Active enzyme has tertiary structure having many active sites (substrate binding sites).
b) Enzymes are biocatalyst.
c) Enzymes occur in viruses.
d) Enzymes are mainly protein in nature
Explanation: "Enzymes occur in viruses". This is incorrect.
9. Select the correct statement from the following:
a) Inorganic catalysts work efficiently at high temperature and high pressure while enzymes
get damaged at high temperature (above 40°C).
b) Ribozymes are nucleic acids behaving like enzyme.
c) Thermophilic organisms living in hot vents and sulphur springs have enzymes that are
stable and retain their catalytic power even at high temperatures (80–90°C).
d) All of these
Explanation: All of these
10. Select the incorrect statement from the following:
a) A physical change simply refers to a change in shape without breaking of bonds.
b) Change is a state of matter and it is also a physical change.
c) Hydrolysis of starch into glucose is an inorganic chemical reaction
d) Catalyzed reactions proceed at rates vastly higher than that of uncatalyzed ones.
Explanation: "Hydrolysis of starch into glucose is an inorganic chemical reaction". This is incorrect.