Q: Which equation represents the overall reaction for aerobic cellular respiration?

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + \text{Energy}$$

Q: Which of the following is a correct summary equation for glycolysis?

$$\text{Glucose} + 2\text{ADP} + 2\text{Pi} + 2\text{NAD}^+ \rightarrow 2\text{Pyruvate} + 2\text{ATP} + 2\text{NADH} + 2\text{H}^+ + 2\text{H}_2\text{O}$$

Question 1

Which of the following best describes the relationship between organismal respiration (breathing) and cellular respiration?

Accepted Answer

Organismal respiration supplies oxygen to cells, which is then used in cellular respiration to produce ATP.

Question 2

Which equation represents the overall reaction for aerobic cellular respiration?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{Energy}$$

Question 3

During cellular respiration, which molecule is oxidized and which is reduced?

Accepted Answer

Glucose is oxidized and oxygen is reduced.

Question 4

Which of the following is NOT a product of glycolysis?

Accepted Answer

CO2

Question 5

What is the primary function of the mitochondria in eukaryotic cells?

Accepted Answer

To harvest chemical energy from glucose and produce ATP

Question 6

Which structure within the mitochondrion is most directly involved in ATP synthesis during oxidative phosphorylation?

Accepted Answer

Cristae (folded inner membrane)

Question 7

Which of the following statements about NAD+ is correct?

Accepted Answer

NAD+ is the oxidized form and accepts electrons to become NADH.

Question 8

In the citric acid cycle, for each acetyl CoA that enters, what are the products?

Accepted Answer

2 CO2, 1 ATP, 3 NADH, and 1 FADH2

Question 9

Which process occurs in the cytosol and does NOT require oxygen?

Accepted Answer

Glycolysis

Question 10

What is the role of electron carriers such as NADH and FADH2 in cellular respiration?

Accepted Answer

They shuttle electrons from glucose to oxygen, enabling step-wise energy release.

Question 11

Which step of cellular respiration produces the majority of ATP?

Accepted Answer

Oxidative phosphorylation

Question 12

Substrate-level phosphorylation is best described as:

Accepted Answer

ATP synthesis using a phosphate group transferred directly from a substrate to ADP by an enzyme.

Question 13

Which of the following is a correct summary equation for glycolysis?

Accepted Answer

$$	ext{Glucose} + 2	ext{ADP} + 2	ext{Pi} + 2	ext{NAD}^+ ightarrow 2	ext{Pyruvate} + 2	ext{ATP} + 2	ext{NADH} + 2	ext{H}^+ + 2	ext{H}_2	ext{O}$$

Question 14

During the oxidation of pyruvate, which of the following is produced?

Accepted Answer

Acetyl-CoA, NADH, and CO2

Question 15

Which of the following best explains why the inner mitochondrial membrane is highly folded (cristae)?

Accepted Answer

To increase the surface area for electron transport and ATP synthesis.

Question 16

A patient with a genetic defect in the enzyme ATP synthase would most likely have problems with which process?

Accepted Answer

Oxidative phosphorylation

Question 17

Which of the following is a real-life example of an oxidation-reduction (redox) reaction?

Accepted Answer

Formation of table salt from sodium and chlorine

Question 18

If oxygen is not present after glycolysis, what is the most likely fate of pyruvate in animal cells?

Accepted Answer

It is converted to lactate via fermentation.

Question 19

Which of the following statements about the flow of energy in ecosystems is correct?

Accepted Answer

Sunlight energy is captured by photosynthesis and released as heat during cellular respiration.

Cellular Respiration: Mechanisms, Structures, and Energy Flow

Guida di studio - Domande di pratica

Study guide - Flashcard