$$2 \text{ ADP} + 2 \text{ P}_i \rightarrow 2 \text{ ATP}$$

Question 1

Which of the following best describes the process of beta oxidation?

Accepted Answer

The breakdown of fatty acids into two-carbon units that enter the TCA cycle as acetyl-CoA.

Question 2

During cellular respiration, what happens to NAD+?

Accepted Answer

It is reduced to NADH as it accepts electrons.

Question 3

Which of the following equations correctly represents the net ATP production during glycolysis per molecule of glucose?

Accepted Answer

$$2 	ext{ ADP} + 2 	ext{ P}_i ightarrow 2 	ext{ ATP}$$

Question 4

What is the primary role of $$O_2 in $$cellular respiration?

Accepted Answer

It acts as the final electron acceptor in the electron transport chain.

Question 5

Which metabolic process produces the most ATP per starting glucose molecule?

Accepted Answer

Oxidative phosphorylation

Question 6

Where does glycolysis occur within a eukaryotic cell?

Accepted Answer

Cytoplasm

Question 7

Which of the following processes requires a proton gradient to function?

Accepted Answer

ATP synthesis during oxidative phosphorylation

Question 8

What is the fate of lactate produced during anaerobic respiration in human muscle cells?

Accepted Answer

It is transported to the liver where it can be converted back to glucose.

Question 9

Which of the following best describes the relationship between the light reactions and the Calvin cycle in photosynthesis?

Accepted Answer

The light reactions provide ATP and NADPH to power the Calvin cycle.

Question 10

If a plant appears orange, which pigment is most likely being absorbed?

Accepted Answer

Blue and green wavelengths

Question 11

Which molecule has the highest initial energy when entering the electron transport chain during cellular respiration?

Accepted Answer

NADH

Question 12

What is the immediate source of energy that powers ATP synthase during oxidative phosphorylation?

Accepted Answer

The flow of protons down their electrochemical gradient

Question 13

Which of the following organisms are capable of photosynthesis?

Accepted Answer

Plants, algae, and some bacteria

Question 14

Where do the light reactions of photosynthesis take place?

Accepted Answer

Thylakoid membranes

Question 15

Which product of the light reactions is NOT used directly by the Calvin cycle?

Accepted Answer

O2

Question 16

What is the relationship between the wavelength ($$\lambda) $$and energy ($$E) of a $$photon?

Accepted Answer

$$E = \dfrac{hc}{\lambda}$$

Question 17

During photorespiration, what molecule does Rubisco combine with RuBP?

Accepted Answer

O2

Question 18

Which process in photosynthesis is directly driven by light energy?

Accepted Answer

Excitation of electrons in chlorophyll

Question 19

Which metabolic process does NOT require oxygen ($$O_2$$)?

Accepted Answer

Glycolysis

Question 20

How many carbons from each pyruvate molecule enter the TCA cycle?

Accepted Answer

Two

BIO101 Exam 3 Review: Cellular Respiration and Photosynthesis (Chapters 7 & 8)

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