Biology · Unit 3 · Paper 2

Cellular Energetics unit test

A test on this unit alone, marked as a percentage and a letter grade — for the test your class is actually sitting, rather than for May. Answer everything, then submit once: seeing the answer to question 3 before attempting question 4 makes the final percentage meaningless.

Paper 1 Paper 2 Paper 3

Each paper is built from this unit’s 40 terms and is the same for everyone, so a teacher can assign “Unit 3, Paper 2” and every student sits the identical test. Multiple choice is marked objectively; the written sections you mark yourself against the model answer and rubric.

Suggested time 31 min 28 points0/17 attempted

Glycolysis

ATP structure

Lab: Photosynthesis (floating disk)

Activation energy

Feedback inhibition

Lab: Cellular Respiration

Photolysis of water

Induced fit

Coupled reactions

Enzyme mechanism

Competitive inhibition

Effect of temperature on enzymes

Short answer 1. Define or explain: ATP yield per glucose

3 pts

Short answer 2. Define or explain: Redox in metabolism

3 pts

Short answer 3. Define or explain: Noncompetitive inhibition

3 pts

Short answer 4. Define or explain: Calvin cycle

3 pts

Free response

4 pts

A researcher isolated mitochondria from muscle cells and suspended them in a buffered solution containing pyruvate, ADP, and phosphate. Oxygen consumption was measured before and after adding a compound that makes the inner mitochondrial membrane permeable to protons.

(a) Describe what happens to the rate of oxygen consumption after the compound is added, and justify your answer.

(b) Explain what happens to ATP synthesis after the compound is added.

(d) Identify the location within the mitochondrion where the citric acid cycle occurs.