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BIOL111 Cell Respiration

Total questions: 66

Worksheet time: 3570secs

Name
Class
Date
1.

the reaction that releases most of the energy for use by the cell occurs in which site?

a)

cytoplasm

b)

golgi apparatus

c)

Inner mitochondrial membrane

d)

endoplasmic membrane

2.

What is chemiosmosis?

a)
Chemiosmosis is the process of photosynthesis in plants.
b)
Chemiosmosis is the process of ATP production driven by the movement of protons across a membrane.
c)
Chemiosmosis refers to the movement of electrons through a circuit.
d)
Chemiosmosis is the breakdown of glucose in the absence of oxygen.
3.

How is the path of electrons different than the path of hydrogens in the electron transport chain?

a)
Electrons are released as energy, while hydrogens are absorbed by the complexes.
b)

Electrons follow a path through protein complexes, while hydrogens are pumped across the membrane into the inner membrane space.

c)
Both electrons and hydrogens follow the same path through the electron transport chain.
d)
Electrons are pumped across the membrane, while hydrogens follow a path through protein complexes.
4.

How many steps are in glycolysis?

a)
8 steps
b)
12 steps
c)
6 steps
d)
10 steps
5.

What is the correct equation for cellular respiration?

a)

6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy

b)

6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O

c)

6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy

d)

6CO2 + 6H2O + Energy -> 6O2 + C6H12O6

6.

What is the job of ATP synthase?

a)
To store energy in glucose molecules.
b)
To synthesize ATP from ADP and inorganic phosphate.
c)
To transport ATP across the cell membrane.
d)
To break down ATP into ADP and phosphate.
7.

How is the net ATP produced during glycolysis different from the total amount of ATP produced?

a)
The net ATP produced during glycolysis is 2, while the total amount of ATP produced is 4.
b)
The net ATP produced during glycolysis is 3, while the total amount of ATP produced is 5.
c)
The net ATP produced during glycolysis is 1, while the total amount of ATP produced is 3.
d)
The net ATP produced during glycolysis is 4, while the total amount of ATP produced is 2.
8.

during an experiment on aerobic cellular respiration, a biologist limits the amount of phosphorus available to a cell culture. how might this affect the cell?

a)

amount of cellular energy would decrease

b)

amount of glucose produced would increase

c)

amount of cellular energy would increase

d)

amount of glucose produced would decrease

9.

what is produced through the process of cellular respiration?

a)

sugar

b)

carbon dioxide

c)

oxygen

d)

sodium

10.

Which of the three steps of cellular respiration is anaerobic?

a)

Glycolysis

b)

Citric Acid Cycle

c)

Calvin Cycle

d)

Electron Transport Chain

11.

Besides ATP, what are the end products of glycolysis?

a)

carbon dioxide and water

b)

carbon dioxide and pyruvate

c)

water and pyruvate

d)

NADH and pyruvate

12.

cells in the body use oxygen for cellular respiration. which is the result of cellular respiration?

a)

ATP is produced and carbon dioxide is released

b)

ATP is consumed and carbon dioxide is released

c)

ATP is produced and carbon dioxide is absorbed

d)

ATP is consumed and carbon dioxide is absorbed

13.

Where does glycolysis occur?

a)

nucleus

b)

cytoplasm

c)

cell membrane

d)

Mitochondrial matrix

14.

What type of molecule is responsible for changing glucose into the numerous other molecules in the process of glycolysis?

a)

Carbohydrates

b)

Enzymes (proteins)

c)

Nucleic acids

d)

Lipids

15.

When oxygen is taken in and glucose is broken down, this is an example of what type of respiration?

a)

anaerobic

b)

aerobic

16.

To make NADH from NAD+, what is removed during dehydrogneation?

a)

1 electron and 1 proton

b)

2 electrons and 1 proton

c)

3 electrons

d)

1 proton

17.

Which type of reaction is shown below?

glucose → lactic acid + ATP

a)

photosynthesis

b)

aerobic respiration

c)

cellular respiration

d)

anaerobic respiration

18.

what does ATP stand for

a)

Adenosine diphosophate

b)

energy

c)

Adenosine triphosphate

d)

Guanine Triphosphate

19.

What is the input of oxidative phosphorylation?

a)

NADH

b)

FADH2

c)

pyruvate

d)

glucose

e)

ATP

20.

In pyruvate oxidation, ____ pyruvate molecules enter and ___ acetyl CoA molecules leave.

a)

6, 4

b)

3, 2

c)

2, 2

d)

2,4

21.

All of the following are functions of the citric acid cycle EXCEPT:

a)

production of ATP

b)

production of NADH

c)

production of FADH2

d)

release of carbon dioxide

e)

reducing oxygen and forming water

22.

What is the difference between ATP and ADP?

a)

ATP has two phosphate groups

b)

ADP has two phosphate groups

c)

ATP has three phosphate groups

d)

ADP three phosphate groups

23.

When is NADH NOT made?

a)

glycolysis

b)

pyruvate oxidation

c)

citric acid cycle

d)

ETC

24.

What happens when the phosphate bond in ATP is broken?

a)

it is reduced

b)

it releases energy

c)

it is oxidized

d)

It absorbs energy

25.

When an atom or molecule gains electrons then it is _________.

a)

oxidized

b)

reduced

26.

What is the output of glycolysis?

a)

glucose

b)

2 pyruvate

c)

2 NADH

d)

2 ATP

e)

2 FADH2

27.

What is the main function of the Citric Acid cycle?

a)

To complete the breakdown of glucose

b)

To generate a proton gradient and synthesize ATP

c)

To split a glucose molecule in half and synthesize NADH

28.

How many NADH molecules would be formed in the citric acid cycle by 2 glucose molecules?

a)

12

b)

10

c)

8

d)

14

29.

What is NADH?

a)

an electron carrier

b)

a protein

c)

a sugar

d)

a nucleotide

30.

What is a product of fermentation?

a)

NAD+

b)

ADP

c)

pyruvate

31.

Where can ATP be made in the cell?

a)

nucleus

b)

cytoplasm

c)

mitochondria

d)

Cell wall

32.

Which statement about glycolysis is true?

a)

It produces FADH2

b)

It splits water to use its electrons

c)

It occurs in the cytoplasm

d)

By the end, most of the energy from glucose is in ATP and NADH

33.

How many times does pyruvate oxidation occur

for each glucose molecule?

a)

1

b)

2

c)

3

d)

4

34.

Where does cellular respiration occur in prokaryotic cells?

a)

cell membrane

b)

mitochondria

c)

cell wall

d)

cytoplasm

35.

A substance that loses an electron has been...

a)

reduced

b)

oxidized

c)

negatived

d)

positived

36.

When placed in a glucose solution with no oxygen, yeast cells will produce bubbles. Which process are the yeast cells carrying out?

a)

chemosynthesis

b)

photosynthesis

c)

Aerobic respiration

d)

Anaerobic respiration (fermentation)

37.

When yeast are placed in a glucose solution with oxygen, bubbles are produced. Which process of is this?

a)
Aerobic respiration
b)
Photosynthesis
c)
Fermentation
d)
Anaerobic respiration
38.

What is the output of the Citric Acid cycle (one turn)?

a)

3 NADH

b)

1 FADH2

c)

1 ATP

d)

2 CO2

e)

acetyl CoA

39.

During aerobic respiration, electrons travel downhill (losing energy) in which sequence?

a)

food-citric acid-ATP-NAD+

b)

food-NADH-electron transport chain-oxygen

c)

glucose-pyruvate-ATP-oxygen

d)

glucose-ATP-electron transport chain-NADH

e)

food-glycolysis-citric acid cycle-NADH-ATP

40.

How can muscle cells generate energy if oxygen is not present?

a)

lactate fermatation

b)

aerobic respiration

c)

Use yeast cells to ferment

41.

What is the primary role of oxygen in cellular respiration?

a)

combine with carbon to form carbon dioxide

b)

final electron acceptor at end of ETC

c)

combine with lactate to form pyruvate

d)

catalyze reactions of glycolysis

e)

yield energy in the form of ATP as its passed down the ETC

42.

Animals breathe in air containing oxygen and breathe out air with less oxygen and more carbon dioxide. Some of the carbon dioxide comes from:

a)

fermentation.

b)

the electron transport chain.

c)

glycolysis.

d)

pyruvate oxidation.

e)

citric acid cycle

43.

Where does Citric Acid cycle take place?

a)

Cytosol

b)

Mitochondrial Matrix

c)

Mitochondrial Cristae

d)

Inner mitochondrial membrane

44.

What is the function of cellular respiration?

a)

to make energy by reducing glucose

b)

to make glucose by reducing oxygen

c)

to make energy by oxidizing glucose

d)

to make glucose by oxidizing ATP

45.

Which of the following organisms undergo cellular respiration?

a)

Animals

b)

Plants

c)

Fungi

d)

Protists

46.

if 18 carbon dioxide molecules are created during cellular respiration, how many glucose molecules were used?

a)

1

b)

3

c)

6

d)

18

47.

Electrons are removed from glucose during which phases of cell respiration?

a)

Glycolysis

b)

Citric Acid Cycle

c)

Electron transport chain

48.

By end of ________, glucose is fully oxidized. (When are the carbons fully gone?)

a)

glycolysis

b)

ETC

c)

chemiosmosis

d)

the citric acid cycle

49.

During glycolysis, for each mole of glucose oxidized to pyruvate:

a)

6 moles of ATP are produced.

b)

4 moles of ATP are used, and 2 moles of ATP are produced.

c)

2 moles of ATP are used, and 4 net moles of ATP are produced.

d)

2 moles of NAD+ are produced.

e)

an undetermined number of ATP is produced.

50.

Which process will proceed with or without oxygen in eukaryotic cells?

a)

ETC

b)

Glycolysis

c)

Krebs cycle

d)

Citric Acid cycle

51.

Which of the following is a by-product of cellular respiration in animals?

a)

oxygen

b)

sugar

c)

heat

d)

protein

52.

If fewer hydrogens are pumped through the ETC, this means...

a)

more ATP are made

b)

fewer ATP are made

c)

The same amount are made

53.

which process releases the highest amount of energy?

a)

anaerobic respiration

b)

photosynthesis

c)

aerobic respiration

d)

protein synthesis

54.

For glycolysis to continue, all cells must have available:

a)

an electron transport chain.

b)

oxygen.

c)

NAD+.

d)

pyruvic acid.

e)

mitochondria.

55.

What happens when there is an excess of pyruvate?

a)

Nothing, it will continue as normal

b)

Citric acid cycle will speed up

c)

Citric acid cycle will slow down

d)

Glycolysis will slow down

56.

What happens when excess ATP is present?

a)

Glycolysis speeds up

b)

Glycolysis slows down

c)

Electron transport chain slows down

d)

Pyruvate oxidation slows down

57.

What does it mean when there is excess ADP present?

a)

You are making too much ATP, so the ETC must speed up

b)

You’re making too much ATP, so pyruvate oxidation must increase

c)

You are not making enough ATP, so glycolysis must increase

d)

You are not making enough ATP, so glycolysis must decrease

58.

When there is too much citric acid, you must…

a)

Increase pyruvate oxidation

b)

Decrease glycolysis

c)

Increase glycolysis

d)

Decrease the ETC

59.

scratch this question, i cant delete it haha

a)

Pick this one

b)

Don’t pick this one

60.

If cyanide were added to poke holes in the inner mitochondrial membrane, what would a result be?

a)

Increased ATP production because hydrogens can move around freely

b)

No effect on ATP production

c)

Decreased ATP production because the proton motor force will be weaker

d)
Improved mitochondrial function and energy efficiency.
61.

Why do athletes breathe more heavily during intense exercise? How does this relate to cellular respiration?

a)

To conserve energy

b)
Increased breathing is due to a decrease in carbon dioxide levels.
c)

To supply more carbon dioxide for cellular respiration, which will produce more energy for muscle activity

d)

To supply more oxygen for cellular respiration, which produces energy for muscle activity.

62.

Mitochondrial diseases often lead to muscle weakness and fatigue. Why does a malfunction in mitochondria impact energy production?

a)
Mitochondria are not involved in energy production.
b)
Malfunctioning mitochondria reduce ATP production, leading to muscle weakness and fatigue.
c)
Malfunctioning mitochondria increase energy efficiency.
d)
Mitochondria produce excess ATP, causing muscle fatigue.
63.

Hikers climbing at high altitudes often experience fatigue due to lower oxygen levels. How does this impact the efficiency of their cellular respiration?

a)
Higher oxygen levels increase cellular respiration efficiency.
b)

Lower oxygen levels decrease the efficiency of glycolysis, which then affects the rest of the process

c)

lower oxygen levels do not impact cellular respiration

d)

Lower oxygen levels decrease the efficiency of the electron transport chain

64.

What is the reducing agent in this equation?

C6H12O6 + 6O2 --> 6CO2 + 6H2O

a)

Glucose

b)

oxygen

c)

carbon dioxide

d)

water

65.

What is being reduced in this equation?

C6H12O6 + 6O2 --> 6CO2 + 6H2O

a)

Carbon dioxide

b)

glucose

c)

oxygen

d)

water

66.

What is the difference between the investment phase and the payoff phase during glycolysis?

a)
Both phases consume energy
b)
The investment phase consumes energy (ATP), while the payoff phase produces energy (ATP and NADH).
c)
The investment phase occurs after the payoff phase
d)
The investment phase produces energy while the payoff phase consumes energy

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