Biology- 11 Chapter 3
Enzymes - 3
1.
It lacks carbon and hydrogen atoms?
a) Organic
b) Catalysts
c) Inorganic
d) Substrates
2.
Enzymes are required in very small quantity for the reaction e.g. an enzyme molecule may breakdown other compounds of more than?
a) 100,00 molecules per second
b) 100,000 molecules per minutes
c) 100,000 molecules per second
d) 100,00 molecules per minutes
3.
Activities of enzymes are affected by?
a) Temperature
b) Gravity
c) pH
d) Two answers are correct
4.
It is a reaction involving the breaking of a bond in a molecule using water?
a) Hydrolysis
b) Cytosol
c) Catalysts
d) Substrate
5.
It is an enzyme that catalyses the hydrolysis of starch into sugars?
a) Cytosol
b) Catalysts
c) Amylase
d) Substrate
6.
Enzymes are highly specific, that is?
a) Affect the equilibrium of the reaction
b) Two answers are correct
c) Amylase only breaks the starch amylase
d) All answers are correct
e) An enzyme will generally catalyze only a single reaction
7.
Enzymes can be studied in vivo and vitro?
a) Two answers are correct
b) Glassware as well as in living cells
c) Living cells as well as in glassware
d) Inorganic and organic
8.
There is no change in enzyme beforehand?
a) Two answers are correct
b) During the reaction
c) After the reaction+
d) Delaying the reaction
9.
Enzymes only speed up a reaction and do not affect the?
a) Type of the reaction
b) Nature of the reactants
c) Nature of the reaction
d) Equilibrium of the reaction+
10.
All the enzymes are?
a) Proteins+
b) Organic
c) Starch
d) Inorganic
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