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Week 4 · Quiz

Week 4 Quiz

Human Anatomy and Physiology I Free sample edition
The student view of the 10-question quiz: each question and its options as they appear in Canvas. The answer key and the feedback ship only inside the course's .imscc (Classic QTI); they are not shown on this public page.

  1. A cell spends one ATP to pay for a job. What is left once the energy has been released?

    Select one.

    • ADP and a phosphate, ready to be recharged
    • A full ATP, kept in storage for later
    • Glucose and oxygen, ready to be burned
    • Carbon dioxide and water, ready to leave

  2. Glycolysis is the first stage of cellular respiration. Where in the cell does it happen?

    Select one.

    • In the mitochondrial matrix
    • On the inner mitochondrial membrane
    • In the cytoplasm
    • Inside the nucleus

  3. In glycolysis, one glucose is split into two pyruvate. The stage uses 2 ATP to get started and makes 4 ATP. What is its net gain of ATP per glucose?

    Select one.

    • 4 ATP
    • 2 ATP
    • 6 ATP
    • 8 ATP

  4. Which stage of cellular respiration makes the most ATP by far?

    Select one.

    • Glycolysis, in the cytoplasm
    • The citric acid cycle, in the matrix
    • Converting pyruvate to lactic acid
    • The electron transport chain, on the inner membrane

  5. What job does oxygen do in cellular respiration?

    Select one.

    • It is broken down as a fuel to release energy
    • It takes the electrons at the end of the chain and forms water
    • It splits glucose into pyruvate in the cytoplasm
    • It releases the carbons of pyruvate as CO₂

  6. During an all-out sprint, oxygen falls short of what the working leg muscles need. What happens to pyruvate?

    Select one.

    • It is converted to lactic acid so glycolysis can keep running
    • It enters the matrix and leaves as CO₂ in the cycle
    • It waits in the cytoplasm until the sprint is over
    • It is turned back into glucose and stored for days

  7. Lactic acid builds up mainly when oxygen is plentiful, as on an easy jog where breathing keeps up.

    True or false.

    • True
    • False

  8. A DNA template codon, read 3′ to 5′, is TAC. Which mRNA codon does transcription write from it?

    Select one.

    • ATG
    • UAC
    • TAC
    • AUG

  9. An mRNA has 18 bases read as 6 codons, and its last codon, UAA, is a stop codon. How many amino acids does translation build from it?

    Select one.

    • 18
    • 6
    • 5
    • 3

  10. Select every correct pairing of a step with the place it happens.

    Select every option that applies.

    • Transcription — the nucleus
    • Translation — the ribosome
    • Citric acid cycle — the mitochondrial matrix
    • Glycolysis — the inner mitochondrial membrane
    • Transcription — the ribosome

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