Unit Test

Question 1

Which carries the code for protein synthesis from the cell nucleus to the cytoplasm?

Revolt · Accepted Answer

D: mRNA

Question 2

Which base is found only in DNA?

Revolt · Accepted Answer

D: thymine

Question 3

Missense, nonsense, and silent mutations are examples of which type of mutation?

Revolt · Accepted Answer

A: substitution

Question 4

What does DNA provide the code for?

Revolt · Accepted Answer

B: protein synthesis

Question 5

Which accurately describes the relationship between cancer risk and exposure to mutagens?

Revolt · Accepted Answer

B: Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations increases as well.

Question 6

What purpose does the peptide bond serve in protein synthesis?

Revolt · Accepted Answer

A: It connects amino acids.

Question 7

Which statements describe the characteristics of an individual protein? Select two options. It is specific to one biochemical reaction.It increases the activation energy needed for a reaction.It can catalyze many different reactions.It increases the rate of a biochemical reaction.It slows down the rate of a biochemical reaction.

Revolt · Accepted Answer

A: It is specific to one biochemical reaction.; D: It increases the rate of a biochemical reaction.

Question 8

A mutation causes a sequence of DNA that has the nucleotides TTG to be changed to TCG. The resulting protein has a different sequence of amino acids. Which type of mutation is this?

Revolt · Accepted Answer

A: missense

Question 9

Many different types of mutations can occur within the body. An individual experiences a mutation that changes a base in a mRNA strand, but during translation the mRNA strand still creates the same protein. Which type of mutation is responsible for the change in the mRNA base?

Revolt · Accepted Answer

A: silent

Question 10

What will happen if RNA polymerase fails to attach to the promoter?

Revolt · Accepted Answer

B: Transcription will not begin.

Unit Test Answers

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