Unit Test

Question 1

Which is not something that occurs in translation?

Revolt · Accepted Answer

C: A molecule of mRNA is formed.

Question 2

What does DNA provide the code for?

Revolt · Accepted Answer

B: protein synthesis

Question 3

Francois Jacob and Jacques Monod studied Escherichia coli (E. coli) bacteria by using lab experimentation. What revision to their initial hypothesis did they come up with?

Revolt · Accepted Answer

D: Two operons regulate gene control in E. coli.

Question 4

The structure of DNA resembles a twisted ladder. Which structural components form the rungs of the ladder?

Revolt · Accepted Answer

C: nitrogenous base pairs

Question 5

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 6

Which does not occur during translation?

Revolt · Accepted Answer

C: DNA is transcribed into a complementary strand of mRNA.

Question 7

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 8

Which base is found only in DNA?

Revolt · Accepted Answer

D: thymine

Question 9

Which step in transcription occurs first?

Revolt · Accepted Answer

C: RNA polymerase attaches to the promoter.

Question 10

Which of the following difference between DNA and RNA allows them to perform their unique functions?

Revolt · Accepted Answer

C: DNA contains thymine, while RNA contains uracil.

Unit Test Answers

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