Cellular Respiration (Glycolysis)

Question 1

Biochemical pathway by which cells release energy from the chemical bond of the food molecules and provide that energy for the essential processes of life

Answer 1

Cellular respiration

Question 2

Prokaryotic cells carry out cellular respiration within the ________ .

Answer 2

cytoplasm

Question 3

Meanwhile, eukaryotic cells carry out cellular respiration in the __________.

Answer 3

mitochondrion

Question 4

Glycolysis occurs in the ________ of the cell, that is, outside the organelles.

Answer 4

cytoplasmic fluid

Question 5

Glycolysis begins respiration by breaking glucose into two molecules of a compound called _______

Answer 5

pyruvic acid

Question 6

The ____________ which takes place within the ________________, completes the breakdown of glucose by decomposing a derivative of pyruvic acid to carbon dioxide.

Answer 6

Krebs cycle, mitochondria

Question 7

The main function of glycolysis and
the Krebs cycle is to

Answer 7

supply the third stage of respiration with
electrons.

Question 8

The third stage of cellular respiration is the

Answer 8

electron transport chain

Question 9

means “splitting of sugar,”

Answer 9

Glycolysis

Question 10

________ is the metabolic process that serves as the foundation for both aerobic and anaerobic cellular respiration

Answer 10

Glycolysis

Question 11

________ is a six-membered ring molecule found in the blood and is usually a result of breakdown of carbohydrates into sugars.

Answer 11

Glucose

Question 12

All of the glycolytic enzymes are found in the _______

Answer 12

cytosol

Question 13

Equation of Gylcolysis

Answer 13

C6H12O6 + 2 NAD+ + 2 ADP + 2 Pi -> 2 Pyruvate + 2 NADH + 2 ATP + 2 H+ + 2 H2O

Question 14

1.

D-glucose -> glucose-6-phosphate (G6P)

(conversion)

Answer 14

Hexokinase

Question 15

2.

Glucose-6-phosphate (G6P ) -> Fructose-6-phosphate (F6P)

(rearrangement)

Answer 15

Phosphoglucose Isomerase

Question 16

3.

Fructose-6-phosphate (F6P ) -> fructose 1,6-bisphosphate (FBP)

(conversion)

Answer 16

Phosphofructokinase

Question 17

4.

fructose 1,6-bisphosphate (FBP ) -> dihydroxyacetone phosphate (DHAP) & glyceraldehyde-3-
phosphate (G3P) / Phosphoglyceraldehyde (PGAL)

(splits)

Answer 17

Aldolase

Question 18

5.

Interconversion - DHAP and G3P
Removal - G3P

Answer 18

Triosephosphate isomerase (TIM)

Question 19

6.1

glyceraldehyde-3-phosphate (G3P ) is oxidized by the coenzyme

Answer 19

nicotinamide adenine dinucleotide (NAD)

Question 20

6.2

glyceraldehyde-3-phosphate (G3P ) is phosphorylated by the addition of the free phosphate
group

Answer 20

glyceraldehyde-3-phosphate dehydrogenase

Question 21

7

1,3-bisphosphoglycerate -> 3-phosphoglycerate (PGA)

(Conversion)

Answer 21

Phosphoglycerate Kinase (PGK)

Question 22

8

P from PGA to 2nd Carbon -> 2-Phosphoglycerate

(Relocates)

Answer 22

Phosphoglycerate Mutase (PGM)

Question 23

9

2 Phosphoglycerate -> Phosphoenolpyruvate (PEP)

(Conversion)

Answer 23

Enolase

Question 24

10

PEP -> ADP -> Pyruvic Acid + ATP

(transfers)

Answer 24

pyruvate kinase OR pyruvic acid kinase

Question 25

How many ATPs are produced?

Step 1 and 3 =
Step 7 and 10 =
Net “visible” ATP produced =

Answer 25

-2 ATP
+4 ATP
2 ATP