Cellular Respiration Test (Ch.2) Flashcards Preview

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Flashcards in Cellular Respiration Test (Ch.2) Deck (26)
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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.

False

2

Enzymes lower activation energy.

True

3

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

False

4

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

True

5

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

Redox

6

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

aerobic cellular respiration

7

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

The activation energy is reduced by enzymes.

8

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

bacteria in the soil help in composting.

9

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

anaerobic and catabolic

10

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

ATP

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

glucose, glyceraldehyde, pyruvate, acetyle-CoA, CO2
(III, IV, V, I, II)

12

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

mitochondria

13

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

Water

14

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

less ATP is produced in anerobic respiration.

15

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

enzymes make the reaction take place in small steps.

16

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

a yeast

17

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

acetaldeyde is converted into ethanol.

18

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

pyruvic acid

19

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

cytoplasm, glucose

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,

ATP, oxygen, _____?______, intermembrane space.

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.

Lactic Acid

22

Refering to ECT and chemiosmosis:
In what order are the components of the chain arranged?

Increasing electronegativity

23

Refering to ECT and chemiosmosis:
Where do protons re-enter the mitochondrial matrix?

ATP Synthase

24

Refering to ECT and chemiosmosis:
What moves into the intermembrane space?

Protons

25

Refering to ECT and chemiosmosis:
What are the electron donor molecules at the beginning of the chain?

NADH/FADH2

26

Refering to ECT and chemiosmosis:
What accepts the electrons at the end of the chain?

Oxygen