ap biology metabolism basics and cellular respiration

Question 1

In this reaction, which compound is being REDUCED?

Accepted Answer

NAD

Question 2

What would happen if electrons were blocked from passing through the ETC?

Accepted Answer

No proton gradient would be produced

Question 3

All organisms must, at the very least, undergo __________.

Accepted Answer

Glycolysis

Question 4

Which of the following processes regenerates NAD+ anaerobically?

Accepted Answer

Fermentation

Question 5

What happens to enzymes that are used in a reaction?

Accepted Answer

They are recycled

Question 6

The energy given up by e- as they move through the ETC is used to:

Accepted Answer

Pump H+ ions across a membrane

Question 7

When we lose fat, where does it go?

Accepted Answer

It was released as CO2 and H2O

Question 8

Endergonic reactions:

Accepted Answer

Can only occur if there is an input of energy

Question 9

Using the table, which is true?

Accepted Answer

P and CR generate or release the same amount of energy

Question 10

If Ms. R sprints 15 mi (haha!), what would her muscle cells not contain increased amounts of?

Accepted Answer

Glucose

Question 11

The CO2 we exhale is produced in:

Accepted Answer

The Krebs cycle

Question 12

What enzyme transforms ADP + P into ATP?

Accepted Answer

ATP synthase

Question 13

Which is NOT produced in glycolysis?

Accepted Answer

Acetyl-CoA

Question 14

Which of the following processes produces electron carriers & CO2 in the mitochondrial matrix?

Accepted Answer

Krebs cycle

Question 15

Why is alcohol fermentation useful?

Accepted Answer

It replenishes NAD+ so glycolysis can produce ATP

Question 16

Scenario: When O2 levels are very low, the amount of CO2 released by an organism is high. Why?

Accepted Answer

Alcohol fermentation is occuring

Question 17

Which step of cellular respiration occurs in the cytosol?

Accepted Answer

Glycolysis

Question 18

Which process produces both NADH and FADH2?

Accepted Answer

Krebs cycle

Question 19

What type of reaction is represented by the following equation?

Accepted Answer

Endergonic

Question 20

Species X & Y both have mitochondria, but ONLY Species Y has chloroplasts.What does this imply?

Accepted Answer

Mitochondria probably evolved first

Question 21

2nd Law of Thermo. says a change in energy can't occur w/o some of the energy being lost as:

Accepted Answer

Heat

Question 22

Coupling occurs when the energy released by an exergonic reaction is:

Accepted Answer

Used to drive an endergonic reaction

Question 23

Where does most of the ATP produced in cellular respiration come from?

Accepted Answer

Oxidative phosphorylation

Question 24

Why do organisms undergo cellular respiration?

Accepted Answer

To extract usable energy from glucose

Question 25

What is the purpose of oxygen in aerobic respiration?

Accepted Answer

Accepts electrons at the end of the ETC

Question 26

Which of the following processes produces pyruvate in the cytoplasm?

Accepted Answer

Glycolysis

Question 27

If you were a bacterial cell, would you rather be anaerobic or aerobic, and why?

Accepted Answer

Aerobic because you would produce more ATP per glucose

Question 28

Which of the following processes uses a chemiosmotic gradient to produce ATP?

Accepted Answer

oxidative phosphorylation

ap biology metabolism basics and cellular respiration

Questions 28

ap biology metabolism basics and cellular respiration

Questions 28