Unit 7.4

Question 1

In order, what are the stages of cellular respiration?

Answer 1

Glycolysis > Link Reaction > Krebs Cycle > Electron Transport Chain

Question 2

Where does glycolysis take place?

Answer 2

cytoplasm

Question 3

What are the inputs and outputs of glycolysis?

Answer 3

Inputs: Glucose, NAD, ADP+P
Outputs: Pyruvic Acid, NADH, CO2, ATP

Question 4

Where does the Link Reaction take place?

Answer 4

matrix of mitochondria

Question 5

What are the inputs and outputs of the Link Reaction?

Answer 5

Inputs: Pyruvic Acid, coenzyme, NAD
Outputs: CO2, Acetyl CoA, NADH

Question 6

Where does the Krebs Cycle take place?

Answer 6

matrix of mitochondria

Question 7

What are the inputs and outputs of the Krebs Cycle?

Answer 7

Inputs: Acetyl CoA, NAD, FAD, ADP+P
Outputs: CO2, NADH, FADH2, ATP

Question 8

Where does the Electron Transport Chain take place?

Answer 8

inner membrane of mitochondria

Question 9

What are the inputs and outputs of the Electron Transport Chain?

Answer 9

Inputs: NADH, FADH2, O2, ADP+P
Outputs: NAD, FAD, H2O, ATP

Question 10

Describe what happens in the Electron Transport Chain.

Answer 10

The Electron Transport Chain involves a series of proteins that transfer electrons from electron carriers (NADH and FADH2) to oxygen, which then takes it away. As electrons move through the chain, energy is released and used to pump protons (Hydrogen) from the matrix into the inner membrane. These protons power ATP synthase, which creates ATP by adding a phosphate group to ADP.