wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

AP Biology Enzyme and Energy

Total questions: 35

Worksheet time: 22mins

Name
Class
Date
1.

Where do substrates bind on an enzyme?

a)

allosteric site

b)

surface receptor

c)

calcium channel

d)

active site

2.

Enzymes are capable of increasing the rate of a chemical reaction through which of the following means?

a)

changing ΔG

b)

reducing the activation energy

c)

changing the equilibrium point of the reaction

d)

increasing kinetic energy

3.

How are enzymes different from a catalyst like a match?

a)

they are reusable

b)

they add more heat than matches

c)

they are living things

d)

they provide activation energy

4.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
5.

Based on the graph, what temperature is optimum for this enzyme?

a)

15 C

b)

40 C

c)

30 C

6.
The induced fit model says enzymes:
a)
enzymes can operate in a wide range of conditions
b)
enzymes are specific to a substrate like a lock & key
c)
enzymes are activated by neighboring molecules
d)
enzymes mold with their substrates for a good fit
7.
Lines 1 and 2 show 2 different:
a)
Free energies (ΔG)
b)
Enthalpies (ΔH)
c)
Activation energies (Ea)
d)
Entropies (ΔS)
8.
Inorganic molecules (like metal ions) that bind to enzymes and enhance an enzyme's ability are called:
a)
CoFactors
b)
CoEnzymes
c)
Allosteric Inhibitors
d)
Allosteric Activators
9.
Organic molecules (like vitamins) that temporarily bind to enzymes and enhance an enzyme's ability are called:
a)
CoFactors
b)
CoEnzymes
c)
Allosteric Inhibitors
d)
Allosteric Activators
10.

When an enzyme is denatured:

a)

The secondary & tertiary structures unfold

b)

The primary structure of the enzyme breaks down

c)

Allosteric sites are bound to inhibitors

d)

The enzyme is working at its maximum rate

11.
Energy is released from ATP when
a)
a phosphate group is added
b)
adenine bonds to ribose
c)
ATP is exposed to sunlight
d)
a phosphate group is removed
12.

Exergonic reactions (choose all correct answers)

a)

Release Energy

b)

Store Energy

c)

Do not require energy to proceed

d)

Produce products with more energy than the reactants

13.
What is structure A?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
14.
What is structure C?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
15.
Random molecular motion is
a)
thermal energy
b)
chemical energy
c)
nuclear fission
d)
electrical energy
16.
Enzymes are considered to be 
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
17.

The graph shows the relative rates of action of four enzymes, A, B, C, and D. Which enzyme works under the most restricted pH range?

a)

enzyme A

b)

enzyme B

c)

enzyme C

d)

enzyme D

18.

C represents

a)

free energy absorbed

b)

free energy released

c)

activation energy

19.

The graph shows the relative rates of action of four enzymes, A, B, C, and D. In what pH do both enzymes A and B both show some activity?

a)

between 0 and 9

b)

6

c)

there is no pH where they both work

d)

4

20.
Some bacteria are metabolically active in hot springs because ____________
a)
their enzymes are insensitive to temperature
b)
they use molecules other than proteins as their main catalysts
c)
their enzymes have high optimal temperatures
d)
they are able to maintain an internal temperature much cooler than that of the surrounding water
21.
When a molecule can occupy the same active site as the substrate, a situation called __________________ can result
a)
Competitive lnhibition
b)
Allosteric Regulation
c)
Non-Competitive Inhibition
d)
Feedback Inhibition
22.
____________describes the general process of breaking down large molecules into samller ones.
a)
metabolism
b)
anabolsim
c)
catabolism
d)
dehydration
23.
Which of the following is part of the first law of thermodynamics?
a)
energy cannot be created or destroyed
b)
entropy of the universe is constant
c)
kinetic energy is stored energy
d)
energy cannot be transferred or transformed
24.
ATP generally energizes a cellular process by ___________
a)
releasing heat upon hydrolysis
b)
acting as a catalyst
c)
releasing ribose to drive reactions
d)
direct chemical transfer of a phosphate group
25.
Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?
a)
allosteric inhibition
b)
competitive inhibition
c)
noncompetitive inhibition
d)
denaturization of the enzyme
26.
Which of the following terms best describes the reaction?
a)
endergonic
b)
exergonic
c)
spontaneous
d)
allosteric
27.
A receptor site that a molecule can bind to that changes the shape of the active site is called a(n):
a)
Allosteric Site
b)
Active Site
c)
DiSulphide Bridge
d)
MHC Receptor
28.
Which of these is NOT true?
a)
Enzymes can denature (change shape) when the temperature gets too high.
b)
Enzymes can only be used once in a chemical reaction. 
c)
Extreme pH can denature enzymes.
d)
Enzymes speed up chemical reactions. 
29.

If a mutation occurs in a DNA sequence that codes for an enzyme, what is the most likely result?

a)

There will likely be no change in the shape and function of the enzyme.

b)

The enzyme will most likely fold in a way that makes its shape incompatible with the substrate and the enzyme will not function correctly.

c)

The enzyme will not be produced at all.

d)

The enzyme will have an enhanced ability to bind with the substrate.

30.

If an enzyme solution is working at its maximum speed, the enzyme is said to be:

a)

denatured

b)

activated

c)

saturated

d)

coupled

31.

The delta G of an enzyme-catalyzed reaction is 30 kJ/mol. If you double the amount of enzymes, what would be the delta G of the catalyzed reaction?

a)

0 kJ/mol

b)

15 kJ/mol

c)

30 kJ/mol

d)

60 kJ/mol

32.

The decreased production of enzyme Trp-T would have which of the following responses?

a)

Decrease in Tryptophan concentration

b)

Increase in I3PA concentration

c)

Increase in IAA concentration

d)

Decrease in I3PA & IAA concentration

33.

A + B --> C

a)

Anabolic

b)

Catabolic

34.

A --> B + C

a)

Anabolic

b)

Catabolic

35.

Energy coupling is where:

a)

Energy from an exergonic reaction is transferred to an endergonic reaction

b)

Energy from an endergonic reaction is transferred to an exergonic reaction

c)

The product of one reaction becomes the reactant for another

d)

Two reactions occur at the same time and share energy sources

Similar Resources on Wayground

FBS 10 First Long Quiz_Oct 2022

30 questions

FBS 10 First Long Quiz_Oct 2022

quiz

Worksheet

•

University

PERKAMPUNGAN ILMU ONLINE TINGKATAN 4 2021

35 questions

PERKAMPUNGAN ILMU ONLINE TINGKATAN 4 2021

quiz

Worksheet

•

11th - 12th Grade

Bioremediation and Phytoremediation

30 questions

Bioremediation and Phytoremediation

quiz

Worksheet

•

University

Cardiac system and blood

39 questions

Cardiac system and blood

quiz

Worksheet

•

9th - 12th Grade

Genetics Final Reveiw

35 questions

Genetics Final Reveiw

quiz

Worksheet

•

9th - 12th Grade

Mitosis

33 questions

Mitosis

quiz

Worksheet

•

KG - University

Pathogens

35 questions

Pathogens

quiz

Worksheet

•

12th Grade