Cellular Respiration & Glycolysis (Q2)

Question 1

A metabolic pathway that breaks down glucose and
produces ATP

Answer 1

Cellular respiration

Question 2

Two reactants of cellular respiration

Answer 2

Glucose, oxygen

Question 3

Three products of cellular respiration

Answer 3

Carbon dioxide, water, ATP

Question 4

Is cellular respiration endergonic or exergonic?

Answer 4

Exergonic, because it releases energy

Question 5

Is cellular respiration spontaneous or non-spontaneous?

Answer 5

Spontaneous

Question 6

Four stages of cellular respiration (in order)

Answer 6

1. Glycolysis
2. Pyruvate oxidation
3. Citric acid cycle/Krebs cycle
4. Oxidative phosphorylation

Question 7

From the two terms “glyco” and “lysis”, what does glycolysis literally mean?

Answer 7

sugar splitting

Question 8

Series of reactions that extract energy from glucose by splitting it into two three-carbon molecules called pyruvates

Answer 8

Glycolysis

Question 9

Where does glycolysis occur?

Answer 9

In the cytosol

Question 10

True or False: Glycolysis requires oxygen.

Answer 10

False, glycolysis does not require oxygen. Because of this, it can happen in aerobic and anaerobic respiration.

Question 11

Two phases of glycolysis

Answer 11

Investment Phase (Steps 1 - 5 of glycolysis)
Payoff Phase (Steps 6 - 10 of glycolysis)

Question 12

Step 1: ______ is phosphorylated into ______ with the enzyme ______.

Answer 12

Glucose, glucose 6-phosphate, hexokinase

Question 13

Step 2: ______ is isomerized into ______ with the enzyme ______.

Answer 13

Glucose 6-phosphate, fructose 6-phosphate, phosphoglucose isomerase

Question 14

Step 3: ______ is phosphorylated into ______ with the enzyme ______.

Answer 14

Fructose 6-phosphate, fructose 1,6-bisphosphate, phosphofructokinase

Question 15

Step 4: ______ is converted into two three-carbon intermediates, ______ and ______, through the enzyme ______.

Answer 15

Fructose 1,6-bisphosphate, glyceraldehyde 3-phosphate, dihydroxyacetone phosphate, aldolase

Question 16

Step 5: The enzyme ______ helps convert dihydroxyacetone phosphate into glyceraldehyde 3-phosphate.

Answer 16

Triosphosphate isomerase

Question 17

Step 6: ______ is oxidized into ______ with the enzyme ______. This step also produces ______ from ______ through reduction.

Answer 17

Glyceraldehyde 3-phosphate, 1,3-bisphosphoglycerate, G3P dehydrogenase, NADH, NAD

Question 18

Step 7: ______ is dephosphorylated into ______ with the enzyme ______. This step also produces ______ from ______ because of the dephosphorylation..

Answer 18

1,3-bisphosphoglycerate, 3-phosphoglycerate, phosphoglycerate kinase, ATP, ADP

Question 19

Step 8: ______ is also dephosphorylated into______ with the enzyme ______.

Answer 19

3-phosphoglycerate, 2-phosphoglycerate, phosphoglyceromutase

Question 20

Step 9: ______ is converted into ______ with the enzyme ______.

Answer 20

2-phosphoglycerate, phosphoenolpyruvate, enolase

Question 21

Step 10: ______ is dephosphorylated into ______ with the enzyme ______.

Answer 21

Phosphoenolpyruvate, pyruvate, pyruvate kinase

Question 22

The Calvin Cycle assists in glycolysis by producing ______ molecules of ______ to create glucose.

Answer 22

2, glyceraldehyde 3-phosphate

Question 23

List all the enzymes involved in glycolysis in order.

Answer 23

1. Hexokinase
2. Phosphoglucose isomerase
3. Phosphofructokinase
4. Aldolase
5. Triosephosphate isomerase
6. G3P dehydrogenase
7. Phosphoglycerate kinase
8. Phosphoglyceromutase
9. Enolase
10. Pyruvate kinase

Question 24

List of all the substrates and products of glycolysis in order.

Answer 24

1. Glucose
2. Glucose 6-phosphate
3. Fructose 6-phosphate
4. 1,6-bisphosphate
5. Glyceraldehyde 3-phosphate, dihydroxyacetone isomerase
6. 1,3-bisphosphoglycerate
7. 3-phosphoglycerate
8. 2-phosphoglycerate
9. Phosphoenolpyruvate
10. Pyruvate

Question 25

How many molecules of ATP is produced in one process of glycolysis?

Answer 25

4 molecules, with the condition that two pyruvate molecules will be produced

Question 26

How many molecules of ATP is used in one process of glycolysis?

Answer 26

2 molecules

Question 27

How many molecules of NADH is produced in one process of glycolysis?

Answer 27

2 molecules