Cell Respiration

1. Which one of the following is true?

Cellular respiration occurs in mitochondria and in chloroplasts.

Photosynthesis occurs in chloroplasts and cellular respiration occurs in mitochondria.

Photosynthesis occurs in mitochondria and in chloroplasts.

Photosynthesis occurs in mitochondria and cellular respiration occurs in chloroplasts.

2. The graph below shows the amount of ATP produced in a cell during a period of time. According to the graph, which of the following processes must have increased from point A to point B?

DNA synthesis

Mitosis

Cell respiration

Hybernation

3. How do cells capture the energy released by cellular respiration?

They store it in molecules of carbon dioxide

They produce glucose

The energy is coupled to oxygen

They produce ATP

4. Muscle soreness associated with strenuous exercise is at least partly due to:

The presence of lactic acid produced during fermentation in muscle cells.

The large amount of carbon dioxide that builds up in the muscle.

The accumulation of alcohol from anaerobic respiration

An excess of ATP that builds up during vigorous exercise.

5. The process of aerobic cellular respiration occurs in:

Animals, only

Plants, only

Both plants and animals

Neither plants nor animals

6. Which of the following are products of cellular respiration?

ATP, carbon dioxide and water

Glucose and carbon dioxide and water

Oxygen, ATP and glucose

Oxygen, ATP and water

7. Which of the following statements is false?

Cell respiration produces carbon dioxide

Cell respiration is a single chemical reaction with just one step.

Cell respiration releases heat.

Cell respiration consumes glucose.

Cell respiration is a MANY step process. (In addition to the main steps: Glycolysis, Krebs Cycle and Electron Transport Chain), their are many sub-steps. (Clue: It is called the Krebs CYCLE - - it is a many stepped process).

Explanation

Cell respiration is a MANY step process. (In addition to the main steps: Glycolysis, Krebs Cycle and Electron Transport Chain), their are many sub-steps. (Clue: It is called the Krebs CYCLE - - it is a many stepped process).

8. Cyanide is a powerful poison because it inhibits an enzyme in mitochondria, preventing the transfer of energy during one of the steps of cellular respiration. This poison would directly effect the production of which of the following molecules?

ATP

Glucose

Oxygen

DNA

9. Respiration ____________, and cellular respiration _______.

Used glucose .......produces glucose

Produces glucose ...... produces oxygen

Is gas exchange ........ produces ATP

Produces ATP .... is gas exchange.

10. Which of the following processes produces the most ATP per molecule of glucose oxidized (bonds broken)?

Anaerobic respiration

Alcoholic fermentation

Lactic acid fermentation

Aerobic respiration

Aerobic: Glycolysis (2 ATP) + Krebs (aka Citric acid) (2ATP) + Electron Transport Chain (32ATP)
Anaerobic (Lactic or alcoholic fermentation): Glycolysis (2ATP) + Fermentation (0 ATP-- performed to empty NADH carrier of hydrogen onto either Lactic acid or alcohol)

Explanation

Aerobic: Glycolysis (2 ATP) + Krebs (aka Citric acid) (2ATP) + Electron Transport Chain (32ATP)
Anaerobic (Lactic or alcoholic fermentation): Glycolysis (2ATP) + Fermentation (0 ATP-- performed to empty NADH carrier of hydrogen onto either Lactic acid or alcohol)

11. A drug is tested in a lab and is found to create holes in both mitochondrial membranes. Scientists suspect that the drug will be harmful to human cells because it will inhibit:

Glycolysis

The citric acid cycle.

The formation of alcohol.

Calvin cycle.

It will not inhibit glycolysis, since that takes place in the cytoplasm (not mitochondria).
The citric acid cycle is another name for Krebs cycle. Krebs and Electron Transport chain take place in the mitochondria.
Alcohol would be formed during fermentation (to empty the carrier NADH of its hydrogen and electrons - producing NAD+. This occurs in anaerobic respiration after glycolysis (so, in the cytoplasm).
Calvin cycle is in photosynthesis (in chloroplasts).

Explanation

It will not inhibit glycolysis, since that takes place in the cytoplasm (not mitochondria).
The citric acid cycle is another name for Krebs cycle. Krebs and Electron Transport chain take place in the mitochondria.
Alcohol would be formed during fermentation (to empty the carrier NADH of its hydrogen and electrons - producing NAD+. This occurs in anaerobic respiration after glycolysis (so, in the cytoplasm).
Calvin cycle is in photosynthesis (in chloroplasts).

12. Which one of the following metabolic pathways is common in aerobic and anaerobic organisms?

Electron Transport Chain

Citric Acid Cycle

Krebs Cycle

Glycolysis

Krebs is the same as Citric acid cycle and is performed in the mitochondria. It is part of Aerobic respiration.
Electron Transport chain is performed in the mitochondria. It is part of Aerobic respiration.

Explanation

Krebs is the same as Citric acid cycle and is performed in the mitochondria. It is part of Aerobic respiration.
Electron Transport chain is performed in the mitochondria. It is part of Aerobic respiration.

13. The ultimate source of all the food we eat and the oxygen we breathe is:

Photosynthesis

Anaerobic metabolism

Glycolysis

Cell respiration,

14. Which statement best describes the role of photosynthesis and cell respiration in the carbon cycle?

Cell respiration and photosynthesis both add carbon into the atmosphere.

Cell respiration and photosynthesis both remove carbon from the atmosphere.

Cell respiration adds carbon into the atmosphere and photosynthesis removes carbon from the atmosphere.

Photosynthesis adds carbon into the atmosphere and cell respiration removes carbon from the atmosphere.

Carbon cycle: CO2 is added to the atmosphere from cell respiration (it is the product) and is removed from the atmosphere and use (as a reactance) for photosynthesis

Explanation

Carbon cycle: CO2 is added to the atmosphere from cell respiration (it is the product) and is removed from the atmosphere and use (as a reactance) for photosynthesis