Exam 1 - Cellular Respiration Wrap-Up Worksheet

Question 1

Which process is the mechanism of photophosphorylation most similar to?

Answer 1

oxidative phosphorylation in cellular respiration

Question 2

When does synthesis of ATP via chemiosmosis occur?

Answer 2

during photosynthesis and respiration

Question 3

What is the relationship between photosynthesis and cellular respiration?

Answer 3

Photosynthesis stores energy in complex organic molecules; cellular respiration releases energy from complex organic molecules

Question 4

In mitochondria, an electron transport chain pumps protons from the matrix into the intermembrane space, whereas in chloroplasts, an electron transport chain pumps protons from the ________.

Answer 4

stroma to the thylakoid space

Question 5

The oxygen consumed during cellular respiration is directly involved in which event?

Answer 5

accepting electrons at the end of the electron transport chain

Question 6

How many molecules of ATP are used in glycolysis, and how many are produced?

Answer 6

2 used, 4 produced

Question 7

Which molecule is formed by the removal of a carbon (as CO2) from a molecule of pyruvate?

Answer 7

acetyl CoA

Question 8

Which metabolic process normally occurs regardless of whether or not oxygen (O2) is present?

Answer 8

glycolysis

Question 9

Even though plants cells carry out photosynthesis, they still use their mitochondria for oxidation of pyruvate. Under what conditions will plant cell mitochondria be active in this process?

Answer 9

in all cells, with or without light