Timedora
Free Practice Quiz Question List

6 Cellular Energy Conversion Online Quiz Questions

Use this free practice quiz with 20 questions to review 6 Cellular Energy Conversion, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

A cell begins breaking down glucose before the products enter a mitochondrion. In which location does this first stage, glycolysis, occur?

  1. A

    Mitochondrial matrix

  2. B

    Cytosol

  3. C

    Intermembrane space

  4. D

    Thylakoid lumen

02
Choose one
1 point

A chloroplast has ATP and NADPH available after light-dependent reactions. Which process uses these molecules to help turn carbon dioxide into organic molecules?

  1. A

    To split water and release oxygen

  2. B

    To transfer electrons to oxygen and form water

  3. C

    To use ATP and NADPH to incorporate carbon dioxide into organic molecules

  4. D

    To split glucose into pyruvate

03
True or false
1 point

ATP made during the light-dependent reactions is simply exported from the chloroplast to serve as the cell’s general-purpose ATP supply.

  1. A

    True

  2. B

    False

04
Written response
1 point

During aerobic respiration, which molecule accepts electrons at the end of the electron transport chain?

05
Fill in the blank
1 point

Complete the statements about photosynthesis: Light-dependent reactions occur in the . The Calvin cycle occurs in the .

06
Choose one
1 point

During mitochondrial oxidative phosphorylation, where does H⁺ accumulate, and in which direction does it flow through ATP synthase to support ATP production?

  1. A

    The intermembrane space, with H⁺ flowing back into the matrix

  2. B

    The matrix, with H⁺ flowing into the intermembrane space through ATP synthase

  3. C

    The cytosol, with H⁺ flowing into the matrix

  4. D

    The inner membrane itself, with H⁺ leaving the mitochondrion

07
True or false
1 point

The overall equations for photosynthesis and aerobic respiration describe one reaction simply running backward.

  1. A

    True

  2. B

    False

08
Choose all
1 point

Select all statements that correctly describe the light-dependent reactions in a chloroplast.

  1. A

    Water supplies replacement electrons and is split, releasing oxygen.

  2. B

    Carbon dioxide is incorporated into G3P as the main event of this stage.

  3. C

    Electron transfer helps establish an H⁺ gradient across the thylakoid membrane.

  4. D

    The reactions produce ATP and NADPH.

09
Written response
1 point

What is the process called in which an H⁺ gradient drives ATP production as H⁺ flows through ATP synthase?

10
Fill in the blank
1 point

In the mitochondrial matrix, the citric acid cycle releases and transfers energy to the electron carrier .

11
Choose all
1 point

Select all statements that correctly describe the early stages of aerobic cellular respiration.

  1. A

    Glycolysis splits one glucose into two pyruvate molecules.

  2. B

    Glycolysis takes place in the mitochondrial matrix.

  3. C

    Glycolysis produces a small amount of ATP and NADH.

  4. D

    With oxygen available, pyruvate enters the mitochondrion and is converted to acetyl-CoA.

12
Choose one
1 point

A mitochondrial electron transport chain is active, but ATP synthase is blocked. Which explanation best predicts why ATP production by oxidative phosphorylation would fall?

  1. A

    ATP synthase pumps electrons into the intermembrane space, where they combine with ADP.

  2. B

    Electron transport establishes an H⁺ gradient, and H⁺ flow through ATP synthase drives ATP production.

  3. C

    Oxygen pumps H⁺ across the inner membrane, and ATP synthase converts H⁺ into glucose.

  4. D

    The citric acid cycle moves ATP through the inner membrane to create an H⁺ gradient.

13
Open ended
1 point

Compare how mitochondria and chloroplasts use chemiosmosis to make ATP. In your answer, identify the main energy input for each organelle, where H⁺ accumulates, and how the products are used.

14
Choose one
1 point

A cell begins breaking down glucose in its cytosol, producing two pyruvate molecules and a small amount of ATP. Which process is occurring?

  1. A

    The citric acid cycle

  2. B

    Glycolysis

  3. C

    Oxidative phosphorylation

  4. D

    The Calvin cycle

15
True or false
1 point

True or false: ATP made during the light-dependent reactions is simply exported from the chloroplast to serve as the cell’s general-purpose ATP supply.

  1. A

    True

  2. B

    False

16
Choose one
1 point

During the light-dependent reactions, H⁺ builds up on one side of the thylakoid membrane. In which compartment does it accumulate?

  1. A

    The stroma

  2. B

    The mitochondrial matrix

  3. C

    The thylakoid lumen

  4. D

    The intermembrane space of a mitochondrion

17
Written response
1 point

In oxidative phosphorylation, what enzyme uses the flow of H⁺ back into the mitochondrial matrix to make ATP?

18
Choose one
1 point

A student asks why oxygen is needed at the end of aerobic respiration’s electron transport chain. Which explanation is correct?

  1. A

    It splits glucose into pyruvate in the cytosol.

  2. B

    It donates replacement electrons to chlorophyll.

  3. C

    It incorporates carbon dioxide into organic molecules.

  4. D

    It accepts electrons at the end of the electron transport chain.

19
Written response
1 point

Which photosynthetic stage uses ATP and NADPH to incorporate carbon dioxide into organic molecules?

20
Choose one
1 point

After pyruvate is converted to acetyl-CoA, a process releases carbon dioxide and transfers energy to NADH and FADH₂. Which process and location match this description?

  1. A

    The citric acid cycle in the mitochondrial matrix

  2. B

    Glycolysis in the mitochondrial matrix

  3. C

    The Calvin cycle in the inner mitochondrial membrane

  4. D

    Oxidative phosphorylation in the cytosol