Enzyme theory
Quiz
•
Biology
•
8th - 11th Grade
•
Practice Problem
•
Hard
Blue Dragon
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Enzymes will usually react with only one substance. This can be explained by the 'lock and key' theory. If this theory is correct, which of the following substances, represented by P, Q, R and S would be acted on by enzyme A?
P
Q
R
S
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an enzyme-controlled reaction normally takes place at 10ºC, in general terms how will the reaction be affected by a fall in temperature to 2°C
The reaction will speed up
The reaction will slow down
There is no change to reaction speed
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an enzyme-controlled reaction normally takes place at 10ºC, in general terms how will the reaction be affected by a rise in temperature to 20°C ?
The reaction will speed up
The reaction will slow down
There will be no change to reaction speed
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. The graph shows the rate of an enzyme
reaction at different levels of acidity or
alkalinity (pH). From the graph, what is the
optimum pH for this enzyme?
pH 2
pH 7
pH 10
none of these
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A protein-digesting enzyme when mixed with starch solution would:
have no action
produce amino acids
produce glucose
digest the starch
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All enzymes are produced inside ……...............…
animals
cells
catalysts
nuclei
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Enzymes which do their work outside cells are called ……...............
extra-cellular
intra-cellular
multi-cellular
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Enzymes which do their work inside cells are called ……...............….
extra-cellular
intra-cellular
multi-cellular
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