2D Cellular Respiration

Question 1

Cellular respiration

Answer 1

A process that breaks down nutrients to form ATP.

Question 2

Chemical equation of cellular respiration

Answer 2

C6+H12+O6 + 6O2 —> 6CO2 + 6H2O + energy

Question 3

Why is cellular respiration effective?

Answer 3

The slow release of energy is much more effective than a quick release.

Question 4

What percent of energy is harnessed from one molecule of glucose?

Answer 4

40%

Question 5

How many ATP are produced per one molecule of glucose?

Answer 5

36-38

Question 6

Glycolysis

Answer 6

Initial breakdown of glucose, 2 ATP required, occurs in cytoplasm, anaerobic, G3P enter, end product is pyruvate.

Question 7

Prep Reactions

Answer 7

Continued breakdown of glucose, occurs in matrix of mitochondria, aerobic, pyruvate enters, loses a C and becomes acetyl, CO2 is released, acetyl binds to Coenzyme forming Acetyl CoA.

Question 8

Citric Acid Cycle

Answer 8

Completes the breakdown of glucose, occurs in the matrix, aerobic, acetyl CoA breaks apart, citrate is made, transporters produced to move energy to ETC, CO2 released.

Question 9

Electron Transport Chain

Answer 9

Uses the e from the glucose to make ATP, occurs in inner membrane, aerobic, NADH and FADH2 drop of e- and H+, H+ pumped from matrix into intermembrane, H2O is formed.

Question 10

Why is a H+ gradient essential for the formation of ATP?

Answer 10

H+ flows through ATP synthase to reach matrix, as they move through, ATP is made by joining phosphate onto ADP.

Question 11

H+ gradient in ETC

Answer 11

The electron carriers drop off the e- and the H+, H+ is pumped from the matrix into the intermembrane, forming H2O.

Question 12

Fermentation

Answer 12

Anaerobic process that produces limited amount of ATP in the absence of oxygen. Pyruvate is broken down to lactate or alcohol.

Question 13

What is the role of NAD+ and FAD?

Answer 13

To carry the e- and H+ to the electron transport chain. 2-3 molecules of ATP for NADH, 1-2 for FADH2.