Cellular Respiration Test (Ch.2)

Question 1

Cellular Respiration results in the relatively rapid, uncontrolled release of energy from a molecule of glucose to produce ATP for use by cells for various functions.

Answer 1

False

Question 2

Enzymes lower activation energy.

Answer 2

True

Question 3

The Krebs cycle is located outside the matrix of the mitochondria.

Answer 3

False

Question 4

In the absence of oxygen, human muscle cells convert pyruvic acid to lactic acid in order to keep resupplying glycolysis with NAD+.

Answer 4

True

Question 5

During aerobic cellular respiration, which of the following is the most common type of reaction to take place in the cell?

Answer 5

Redox

Question 6

What is the name of the process in which energy is released in a cell in the presence of sufficient oxygen?

Answer 6

aerobic cellular respiration

Question 7

The reactants in cellular respiration, glucose, and oxygen are stable compounds. How do these substances react?

Answer 7

The activation energy is reduced by enzymes.

Question 8

Which of the following processes most likely does not involve anaerobic conditions?

Answer 8

bacteria in the soil help in composting.

Question 9

Glycolysis can best be described as which of the following kinds of pathways?

Answer 9

anaerobic and catabolic

Question 10

In which of the following forms is energy immediately made available for use by living cells?

Answer 10

ATP

Question 11

The following molecules can be found at various stages during cellular respiration:
I. acetyl-CoA
II. carbon dioxide 
III. glucose 
IV. glyceraldeyde 
V. pyruvate

Answer 11

glucose, glyceraldehyde, pyruvate, acetyle-CoA, CO2

III, IV, V, I, II

Question 12

Proteins are to ribosomes as ATP is to which of the following cell organelles?

Answer 12

mitochondria

Question 13

At the end of the electron transport chain, the final product is which of the following?

Answer 13

Water

Question 14

Anaerobic respiration is less efficient than aerobic respiration for which of the following reasons?

Answer 14

less ATP is produced in anerobic respiration.

Question 15

When glucose undergoes combustion in the presence of air, it releases heat rapidly. In cellular respiration

Answer 15

enzymes make the reaction take place in small steps.

Question 16

A particular organism releases carbon dioxide and alcohol as its end products. The organism is most likely which of the following?

Answer 16

a yeast

Question 17

Anaerobic and aerobic respiration are similar in all but one of the following ways. Which one is the exception?

Answer 17

acetaldeyde is converted into ethanol.

Question 18

At the end of glycolysis, most of the energy originally found in glucose is located in molecules of

Answer 18

pyruvic acid

Question 19

The process of glycolysis occurs in the _______ and begins with a molecule of ___________.

Answer 19

cytoplasm, glucose

Question 20

Mitochondria are round or sausage-shaped organelles that are found throughout the cytoplasm of a cell and specialize the production of ________. This process cannot occur in the presence of ______. Mitochondria have a double membrane. The inner membrane has many proteins and enzymes attached to its inner surface. The inner membrane also creates two compartments within the mitochondrion. The _________ is the inner most space and the ________________ lies between the two membranes,

Answer 20

ATP, oxygen, _____?______, intermembrane space.

Question 21

Under normal conditions, humans break down glucose by aerobic respiration. However, there are times, such as during vigorous exercise, when muscle cells respire glucose faster than oxygen can be supplied. Under these conditions __________ fermentation occurs.

Answer 21

Lactic Acid

Question 22

Refering to ECT and chemiosmosis:

In what order are the components of the chain arranged?

Answer 22

Increasing electronegativity

Question 23

Refering to ECT and chemiosmosis:

Where do protons re-enter the mitochondrial matrix?

Answer 23

ATP Synthase

Question 24

Refering to ECT and chemiosmosis:

What moves into the intermembrane space?

Answer 24

Protons

Question 25

Refering to ECT and chemiosmosis:

What are the electron donor molecules at the beginning of the chain?

Answer 25

NADH/FADH2

Question 26

Refering to ECT and chemiosmosis:

What accepts the electrons at the end of the chain?

Answer 26

Oxygen