Biochemical pathways, coenzymes, and inhibitors

Biochemical pathways, coenzymes, and inhibitors

12th Grade

16 Qs

quiz-placeholder

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Biochemical pathways, coenzymes, and inhibitors

Biochemical pathways, coenzymes, and inhibitors

Assessment

Quiz

Biology

12th Grade

Hard

Created by

Courtney Swain-Edwards

Used 18+ times

FREE Resource

16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following may occur when a molecule binds to a specific site on an enzyme (but not its active site) and this binding produces a change in the enzyme shape that affects and reduces its activity?

Competitive inhibition

Substrate concentration

Competitive regulation

Non-competitive inhibition

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The ATP produced by cellular respiration cannot be stored and, because it is unstable, any excess ATP loses its energy and is wasted. At times of high demand, the rate ATP production is stepped up and at times of lower demand, the rate is slowed.  Which of the following is this an example of?

Denaturation

Regulation

Enzyme concentration

Non-competitive inhibition

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

As the temperature increases above the optimum, the reaction rate reduces sharply. This occurs because enzymes are proteins and when temperatures exceed the optimum, _____________ of the protein occurs.

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

When regulating biochemical pathways, the binding of _____________ to the allosteric site produces a change of shape in an enzyme that stops enzyme activity.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is true?

1. As the temperature of an enzyme is decreased, the number of collisions between substrate and enzyme increases.

2. The optimal temperature is the temperature in which an enzyme has the greatest rate of activity.

3. Different enzymes may have a different optimal pH.

2 and 3

1 and 3

2 only

1 only

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All enzyme molecules are saturated with substrate molecules when the maximum reaction rate of an enzyme is reached.

True

False

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Inhibitors always bind to the active site.

True

False

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