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Review Notebook: Unit 3 CED Quizizz (MCQ only)

Total questions: 82

Worksheet time: 41mins

Name
Class
Date
1.

Which macromolecules are enzymes?

a)

Carbohydrate

b)

Lipid

c)

Nucleic Acid

d)

Protein

2.

Why does the substrate binding activate the enzyme?

a)

Activates accessory molecules

b)

Changes shape

c)

Provides energy

d)

Transport reaction

3.

How does an enzyme speed up the chemical reaction?

a)

Decrease the activation energy required

b)

Decrease the change in free energy

c)

Increase the activation enzyme required

d)

Increase the change in free energy

4.

Where does the substrate bind on an enzyme?

a)

Active site

b)

Enhancer

c)

Promoter

d)

TATA box

5.

How does an enzyme affect ΔG (change in Gibbs free energy)?

a)

Decrease

b)

Increase

c)

No effect

6.

How does an enzyme affect activation energy?

a)

Decrease

b)

Increase

c)

Stays the Same

7.

Due to lower activation energy, how is the reaction rate affected?

a)

Decrease

b)

Increase

c)

Stays the Same

8.

What does an enzyme do to reaction rate?

a)

Decrease

b)

Increase

c)

Stays the Same

9.

How is the activation energy different with an enzyme?

a)

Decrease

b)

Increase

c)

Stays the Same

10.

How does the enzyme affect the change in Gibbs?

a)

Decrease

b)

Increase

c)

Stays the Same

11.

What happens to an enzyme if the temperature increases too high?

a)

No effect

b)

Enzyme increases rate

c)

Enzyme decreases rate

d)

Enzyme denatures

12.

What happens to an enzyme if the temperature decreases too low?

a)

No effect

b)

Enzyme increases rate

c)

Enzyme decreases rate

d)

Enzyme denatures

13.

If the enzyme is denatured…

a)

No effect

b)

Reaction rate increases

c)

Reaction rate decreases

d)

Reaction stops

14.

Enzymes get consumed by reaction and must be re-added

a)

True

b)

False

15.

If the pH increases, why does the enzyme denature?

a)

pH causes the polar R groups to be nonpolar

b)

pH affects the charge on the carboxyl & amine groups

c)

pH affects the charged R groups

d)

pH causes hydrogen ions to act as competitive inhibitor

16.

Inhibitor that binds to the active site

a)

Competitive inhibitor

b)

Noncompetitive inhibitor

17.

Any increase in heat will denature enzyme

a)

False

b)

True

18.

As pH increases, what happens to the hydrogen ion concentration?

a)

Decreases

b)

Increases

19.

During cellular respiration, protons are pumped from the matrix to the intermembrane space. What happens to the pH of the matrix?

a)

Decreases

b)

Increases

20.

How do you overcome a competitive inhibitor?

a)

Add more ATP

b)

Add more inhibitor

c)

Add more products

d)

Add more reactants

21.

When an enzyme denatures, which structure is not affected?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

22.

When the structure changes, how is the function affected?

a)

Does not affect function

b)

Gains new function

c)

Nonfunctional

d)

All of the above

23.

When a protein/enzyme is denatured, it is sometimes reversible.

a)

True

b)

False

24.

A decrease in temperature will denature an enzyme.

a)

True

b)

False

25.

What happens to reaction rate if temperatures decrease?

a)

Decrease

b)

Increase

c)

Stays the Same

26.

If the concentration of hydrogen ions increases?

a)

pH decreases

b)

pH increases

27.

If the pH increases, what happened to the hydrogen ion concentration?

a)

Decreases

b)

Increases

28.

How does an increase in substrate affect reaction rate?

a)

Decrease forever

b)

Increase forever

c)

Decrease until enzyme saturated

d)

Increase until enzyme saturated

29.

As the product concentration increases, reaction rate ____?

a)

Decrease

b)

Increase

c)

Stays the Same

30.

What is a competitive inhibitor?

a)

Binds to the same site as the substrate

b)

Binds to a different site than substrate

c)

Binds to substrate to inhibit reaction

d)

Binds to product to inhibit reaction

31.

Which describes an endergonic reaction?

a)

Positive ΔG, nonspontaneous

b)

Negative ΔG, nonspontaneous

c)

Positive ΔG, spontaneous

d)

Negative ΔG, spontaneous

32.

Which describes an exergonic reaction?

a)

Positive ΔG, nonspontaneous

b)

Negative ΔG, nonspontaneous

c)

Positive ΔG, spontaneous

d)

Negative ΔG, spontaneous

33.

What does the second law of thermodynamics state about disorder?

a)

Every reaction increases the entropy

b)

Every reaction decreases the entropy

34.

Loss of energy results in…

a)

Death

b)

Eating

c)

Hibernation

d)

Metabolism

35.

A → B → C → D Enzyme B is inhibited. What happens to the concentration of C?

a)

C increases

b)

C decreases

c)

C stays the same

36.

Every reaction increases the entropy of the universe…

a)

First law of thermodynamics

b)

Second law of thermodynamics

c)

Third law of thermodynamics

37.

Energy cannot be created or destroyed, but transferred or transformed…

a)

First law of thermodynamics

b)

Second law of thermodynamics

c)

Third law of thermodynamics

38.

What molecule is responsible for powering cellular processes?

a)

ATP

b)

Glucose

c)

Membrane Potential

d)

Sucrose

39.

This reaction is…

a)

Endergonic

b)

Exergonic

40.

This reaction is…

a)

Endergonic

b)

Exergonic

41.

Where did photosynthesis originate?

a)

Algae

b)

Cyanobacteria

c)

Plants

d)

Protists

42.

Earth included oxygen when it was first formed

a)

True

b)

False

43.

Where was oxygen initially formed?

a)

Atmosphere

b)

Land

c)

Meteorite

d)

Ocean

44.

Which step of photosynthesis stores solar energy as ATP?

a)

Calvin Cycle

b)

Glycolysis

c)

Krebs Cycle

d)

Light Reactions

45.

Which step of photosynthesis stores high energy electrons as NADPH?

a)

Calvin Cycle

b)

Glycolysis

c)

Krebs Cycle

d)

Light Reactions

46.

Which step of photosynthesis synthesizes G3P?

a)

Calvin Cycle

b)

Glycolysis

c)

Krebs Cycle

d)

Light Reactions

47.

Which step of photosynthesis takes place in stroma?

a)

Calvin Cycle

b)

Glycolysis

c)

Krebs Cycle

d)

Light Reactions

48.

Which step of photosynthesis takes place in the thylakoid?

a)

Calvin Cycle

b)

Glycolysis

c)

Krebs Cycle

d)

Light Reactions

49.

Where does photolysis take place?

a)

Cytosol

b)

Photosystem I

c)

Photosystem II

d)

Stroma

50.

Which direction are hydrogen ions pumped for the electron transport chain in photosynthesis?

a)

Into the cytosol

b)

Into the intermembrane space

c)

Into the stroma

d)

Into the thylakoid space

51.

Where does Calvin Cycle take place?

a)

Cristae

b)

Cytosol

c)

Stroma

d)

Thylakoid

52.

What enzyme used is for carbon fixation?

a)

ATP Synthase

b)

Decarboxylase

c)

PEP Carboxylase

d)

Rubisco

53.

How many carbon dioxides are used in the Calvin Cycle?

a)

1

b)

2

c)

3

d)

6

54.

What is the product of the Calvin Cycle?

a)

3PG

b)

G3P

c)

PGAL

d)

RuBP

55.

What is the function of photosynthesis?

a)

Capture sunlight and produce sugars

b)

Capture ATP and produce ion gradients

c)

Capture sugars and produce sunlight

d)

Capture ions and produce ATP

56.

Which provided evidence of oxygen generation in the atmosphere?

a)

Production of ATP without a mitochondria

b)

Production of fire on earth’s surface

c)

Production of iron oxide bands in rock layers

d)

Production of organic compounds

57.

Which describes light independent reactions?

a)

Calvin cycle to break bonds to release carbon dioxide

b)

Calvin cycle to synthesize organic compounds

c)

Krebs cycle to break bonds to release carbon dioxide

d)

Krebs cycle to synthesize organic compounds

58.

Where do the light independent reactions take place?

a)

Cytosol

b)

Matrix

c)

Stroma

d)

Thylakoid

59.

Which describes light dependent reactions?

a)

Light is absorbed to synthesize ATP & NADPH

b)

Light is absorbed to create a sodium gradient

c)

Light is used to synthesize organic compounds

d)

Light is used to heat the cell increasing reaction rate

60.

Where would you find chlorophyll?

a)

Cytosol

b)

Mitochondria

c)

Ribosome

d)

Thylakoid

61.

Which step is anaerobic?

a)

Glycolysis

b)

Krebs Cycle

c)

Oxidative Phosphorylation

62.

Where does glycolysis take place?

a)

Chloroplast

b)

Cytosol

c)

Mitochondria

d)

Nucleus

63.

Fermentation synthesizes ATP…

a)

True

b)

False

64.

Where does Krebs Cycle take place?

a)

Cristae

b)

Cytosol

c)

Intermembrane space

d)

Matrix

65.

Where does the electron transport chain of cellular respiration occur?

a)

Cristae

b)

Cytosol

c)

Intermembrane space

d)

Matrix

66.

ATP is synthesized in the electron transport chain…

a)

True

b)

False

67.

Which side has the high proton concentration?

a)

Cristae

b)

Cytosol

c)

Intermembrane space

d)

Matrix

68.

What is the first step of cellular respiration?

a)

Glycolysis

b)

Krebs Cycle

c)

Oxidative Phosphorylation

69.

What is the second step of cellular respiration?

a)

Glycolysis

b)

Krebs Cycle

c)

Oxidative Phosphorylation

70.

How many of the 2 carbons from acetyl CoA remain after Krebs Cycle?

a)

0

b)

1

c)

2

d)

3

71.

Which enzyme in the cristae adds the P to ADP?

a)

ADP Phosphorylase

b)

ATP Synthase

c)

Kinase

d)

Phosphatase

72.

Which process precedes fermentation?

a)

Calvin Cycle

b)

Glycolysis

c)

Krebs Cycle

d)

Oxidative Phosphorylation

73.

Prokaryotes perform an electron transport chain on their plasma membrane

a)

True

b)

. False

74.

Which is the pathway of the electron through cellular respiration?

a)

CO2 > NADH > NADPH

b)

Glucose > NADH > O2

c)

NADH > O2 > Glucose

d)

Water > ATP > NADPH

75.

What is the final electron acceptor in cellular respiration?

a)

ATP

b)

NADH

c)

Oxygen

d)

Water

76.

What donates the electron in photosynthesis?

a)

ATP

b)

NADH

c)

Oxygen

d)

Water

77.

Where are the electrons pumped during the electron transport chain in the mitochondria?

a)

Cytosol

b)

Stroma

c)

Matrix

d)

Intermembrane space

78.

Krebs cycle: products?

a)

ATP, NADH, FADH2, CO2

b)

ATP, 2 NADH, 2 FADH2, CO2

c)

ATP, 3 NADH, FADH2, 2 CO2

d)

2 ATP, NADH, FADH2, 2 CO2

79.

What color is the pigment from graph II?

a)

Blue

b)

Green

c)

Red

80.

If you forget to brush your teeth, which bacteria is favorable in your mouth (for them not you)?

a)

S. mutans

b)

S. sanguinis

81.

What process performed by the bacteria caused the low pH?

a)

Fermentation/Glycolysis

b)

Krebs Cycle

c)

Oxidative Phosphorylation

d)

All of the above

82.

Toothpaste is alkaline, which bacteria is more favorable?

a)

S. mutans

b)

S. . sanguinis

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