Cellular Respiration

Question 1

What is stage 1 of cellular respiration?

Answer 1

glycolysis

Question 2

Where does glycolysis take place?

Answer 2

the cytoplasm

Question 3

Does glycolysis need oxygen?

Answer 3

No. It is an anaerobic process

Question 4

Glycolysis produces a net 2 of what molecules?

Answer 4

ATP , NADH, Pyruvic Acid

Question 5

What is released in glycolysis?

Answer 5

hydrogen

Question 6

Where does the Krebs cycle take place?

Answer 6

mitochondrial matrix

Question 7

Is the Krebs cycle aerobic or anaerobic?

Answer 7

aerobic

Question 8

What happens to the 2 pyruvates in the Krebs cycle?

Answer 8

Each 3 carbon Pyruvate is converted into a molecule of 2 carbon acetyl-CoA

Question 9

Where does the NADH come from in the Krebs cycle? How many?

Answer 9

• 2 when Pyruvate is converted into carbon acetyl-CoA

- 6 when carbon acetyl-CoA goes through the citric acid cycle

Question 10

Where does the CO2 come from in the Krebs cycle?

Answer 10

when Pyruvate is converted into carbon acetyl-CoA, O2 breaks off one carbon ring each

Question 11

Where does the FADH2 come from in the Krebs cycle? How many?

Answer 11

2 when carbon acetyl-CoA goes through the citric acid cycle

Question 12

Where does the ATP come from in the Krebs cycle? How many?

Answer 12

2 when carbon acetyl-CoA goes through the citric acid cycle

Question 13

What two products are released when carbon acetyl-CoA goes through the citric acid cycle

Answer 13

CO2, and Hydrogen

Question 14

Stage 3 of the cellular respiration is also known as what?

Answer 14

Oxidative Phosphorylation

Question 15

NADH delivers e-’s to the _____ _______ in the ETC

Answer 15

first protein

Question 16

-FADH2 delivers e-’s to the _______ ________ in the ETC.

Answer 16

second protein

Question 17

Each NADH yields about _ ATP’s

Answer 17

3

Question 18

Each FADH2 yields about _ ATP’s

Answer 18

2

Question 19

How do the electrons impact the hydrogens as they flow down the ETC?

Answer 19

As electrons flow down the chain they cause Hydrogens to get sucked out of the mitochondrial matrix into the inner membrane space.

Question 20

What happens to the H+ that is in the inner membrane space?

Answer 20

As the concentration of H+’s build up they are sucked back into the mitochondrial matrix through ATP synthase

Question 21

How is water made in the ETC?

Answer 21

Oxygen is the final e- acceptor, it bonds with H+ to make water

Question 22

What happens to water in cellular respiration

Answer 22

it is released

Question 23

How many ATPs does the ETC produce?

Answer 23

32-34 ATP’s

Question 24

Define fermentation

Answer 24

anaerobic ATP production that occurs after glycolosis when oxygen is not available. (not efficient , 2 ATP’s)

Question 25

Descibe Lactic Acid Fermentation

Answer 25

produces 2 ATP’s and lactic acid (lactate). The lactic acid is stored in muscles and turned into pyruvate

Question 26

Describe Alcoholic Fermentation

Answer 26

produces 2 ATP’s, CO2, and ethyl alcohol