AP BIOLOGY CHAPTER 8

What is cellular respiration?

Process cells use to turn glucose into ATP

Where does glycolysis happen?

Cytoplasm

Where does the Krebs cycle occur?

Mitochondrial matrix

Where does the ETC occur?

Inner mitochondrial membrane

What happens in glycolysis?

Glucose is split into 2 pyruvate

is glycolysis’ anaerobic?

Yes

What electron carrier is made during glycolysis?

NADH

What happens to pyruvate before the Krebs cycle?

It becomes acetyl CoA

What is released during pyruvate oxidation?

CO2 and NADH

What is the main purpose of the Krebs cycle?

To make electron carriers

What is the main job of the ETC

to make ATP

What is the final electron acceptor in the ETC?

Oxygen

What happens when oxygen accepts electrons?

It forms water

What is chemiosmosis?

Using a proton gradient to make ATP

What is the total ATP per glucose?

30-32

If oxygen is not present what happens?

Fermentation occurs to continue producing ATP

What are the 2 types of fermentation?

Lactic acid and alcoholic

What is catabolism?

Breaking down molecules for energy

What is anabolism?

Building up molecules using energy

What happens in the energy investment phase of glycolysis?

Cell uses 2 ATP to break down molecules

Why does the cell spend ATP in glycolysis?

To make glucose easy to split

What happens in the energy harvesting phase of glycloysis?

ATP and NADH are produced

How much ATP is made in the payoff phase?

4

What is the net ATP from glycolysis?

2

What happens in prep cycle?

Pyruvate is prepared for Krebs cycle

Main goal of citric acid cycle?

Load up electron carriers