Q: According to the ATP cycle shown in the fourth image, which equation best represents the synthesis of ATP from ADP and inorganic phosphate?

$$\mathrm{ADP} + \mathrm{P_i} + \text{energy} \rightarrow \mathrm{ATP}$$

Question 1

Which of the following best describes the process illustrated in the first image, where a substrate is modified in a series of steps by different enzymes?

Accepted Answer

A metabolic pathway, where each enzyme catalyzes a specific reaction to convert the initial substrate into a final product.

Question 2

Based on the second image, which of the following statements about catabolic and anabolic pathways is correct?

Accepted Answer

Catabolic pathways break down complex molecules and release energy, while anabolic pathways build complex molecules and require energy input.

Question 3

Referencing the third image, which component of ATP is directly involved in the release of energy during hydrolysis?

Accepted Answer

The bond between the terminal phosphate groups.

Question 4

According to the ATP cycle shown in the fourth image, which equation best represents the synthesis of ATP from ADP and inorganic phosphate?

Accepted Answer

$$\mathrm{ADP} + \mathrm{P_i} + 	ext{energy} ightarrow \mathrm{ATP}$$

Question 5

In the context of energy coupling (fifth image), what is the primary role of ATP in cellular metabolism?

Accepted Answer

ATP couples exergonic and endergonic reactions by providing energy for cellular work.

Question 6

Based on the sixth image, what is the process called when ATP donates a phosphate group to another molecule?

Accepted Answer

Phosphorylation

Question 7

In the seventh image, what is the effect of phosphorylation on glucose?

Accepted Answer

It inactivates glucose, preventing it from entering glycolysis.

Question 8

According to the eighth image, what does the mnemonic 'LEO the lion says GER' help you remember about redox reactions?

Accepted Answer

Oxidation is loss of electrons, and reduction is gain of electrons.

Question 9

In the context of the ninth and tenth images, if Molecule A loses an electron and Molecule B gains it, which statement is correct?

Accepted Answer

Molecule A is oxidized and Molecule B is reduced.

Question 10

Based on the twelfth image, what is the function of NADH and FADH2 in cellular respiration?

Accepted Answer

They act as electron carriers, transporting electrons to the electron transport chain.

Question 11

Referencing the thirteenth and fourteenth images, which molecule is oxidized and which is reduced in the overall reaction of aerobic cellular respiration?

Accepted Answer

Glucose is oxidized and oxygen is reduced.

Question 12

According to the fifteenth image, which of the following lists the correct order of the stages of aerobic cellular respiration?

Accepted Answer

Glycolysis, Pyruvate Oxidation, Krebs Cycle, Electron Transport Chain & Chemiosmosis

Question 13

Based on the sixteenth image, what process occurs in the absence of oxygen?

Accepted Answer

Fermentation

Question 14

According to the seventeenth image, what is the main purpose of oxygen in aerobic cellular respiration?

Accepted Answer

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

Question 15

Based on the eighteenth and nineteenth images, which steps of aerobic cellular respiration utilize substrate-level phosphorylation to produce ATP?

Accepted Answer

Glycolysis and Krebs cycle

Question 16

According to the twentieth image, where does glycolysis occur within the cell?

Accepted Answer

Cytoplasm

Question 17

Based on the twenty-first image, what is the net production of ATP and NADH from one molecule of glucose during glycolysis?

Accepted Answer

2 ATP and 2 NADH

Question 18

Referencing the twenty-third and twenty-fourth images, what are the products of pyruvate oxidation per glucose molecule?

Accepted Answer

2 Acetyl-CoA, 2 NADH, and 2 CO2

Metabolism and Nutrition: Cellular Respiration and Energy Pathways

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