Unit Test

Question 1

How does ATP supply energy for cellular activities?

Revolt · Accepted Answer

A: by breaking off a phosphate group from its structure

Question 2

Why is the Calvin cycle considered a dark reaction?

Revolt · Accepted Answer

D: It can proceed in the dark.

Question 3

Which is the final electron acceptor in the electron transport chain of cellular respiration?

Revolt · Accepted Answer

C: oxygen

Question 4

Which series of diagrams correctly represents the order of mitosis?

Revolt · Accepted Answer

A: The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromosomes line up at the center. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the cell is divided.

Question 5

Rapid reproduction is an advantage of which process?

Revolt · Accepted Answer

C: asexual reproduction

Question 6

Which statement best describes the process of chemiosmosis and the direct result of its occurrence?

Revolt · Accepted Answer

A: Hydrogen ions flow from the thylakoid down a concentration gradient through ATP synthase channels into the stroma. ADP is converted to ATP.

Question 7

A species of mud snail was studied for five years. During this time, scientists observed the season in which they mated, the number of offspring they produced, and the results of such stressors as drought, famine, and lack of mates. Which question were the scientists most likely studying?

Revolt · Accepted Answer

B: Are the reproductive rates of mud snails affected by environmental changes?

Question 8

Which best defines a diploid cell during meiosis?

Revolt · Accepted Answer

C: a cell that has double the number of chromosomes as the daughter cell

Question 9

Which statement best summarizes the importance of meiosis to reproduction?

Revolt · Accepted Answer

C: It produces gametes that are needed for sexual reproduction.

Question 10

Which statement describes thylakoids?

Revolt · Accepted Answer

D: Photosystems I and II function here.

Unit Test Answers

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