biology exam 2 - professor mark smith

Question 1

cellular respiration

Answer 1

production of energy (ATP) by the cell

Question 2

Aerobic Respiration

Answer 2

energy production that requires oxygen
- using oxygen to break down sugar into ATP/energy

Question 3

Aerobic Respiration formula

Answer 3

6O2 +C6H12O6 –> 6H20 +6C02 + 36-38 ATP

Question 4

Anaerobic Respiration

Answer 4

energy production without oxygen

Question 5

Aerobic Respiration Steps

Answer 5

1. Glycolysis
2. Krebs Cycle
3. Electron Transport Chain

Question 6

Glycolysis

Answer 6

the breakdown of sugar into 2 pyruvate molecules

Question 7

Where in the cell does glycolysis occur?

Answer 7

in cytoplasm of cell, outside of mitochondria

Question 8

Products of Glycolysis

Answer 8

2 pyruvate
4 ATP
2 NADH

Question 9

What is needed to start glycolysis?

Answer 9

2 ATP
sugar

Question 10

Krebs Cycle

Answer 10

pyruvate enters the mitochondria (matrix) and is broken down more into 6 carbon dioxide, 8 NADH, 2 FADH2, 2 ATP

Question 11

What is needed for Krebs Cycle?

Answer 11

2 pyruvate,

Question 12

Products of Krebs Cycle

Answer 12

6CO2 + 8NADH + 2FADH2 + 2 ATP

Question 13

Krebs Cycle Steps

Answer 13

• takes 2 turns in the cycle, (1 cycle for every pyruvate molecule)
• electron carriers that were made (FADH2, NADH) are sent to Electron Transport Chain

Question 14

Where does Electron Transport Chain occur?

Answer 14

in inner membrane of mitochondria

Question 15

1st Step - Electron Transport Chain

Answer 15

NADH and FADH2 travel to the ETC and release their electrons to travel down the protein chain

Question 16

2nd Step - Electron Transport Chain

Answer 16

As the electrons pass each protein, H+ are pushed through the membrane to the other side