AnswersSTPSB_Biology CR 2627 MitchellLab: Building Proteins from RNA

Lab: Building Proteins from RNA — Unit test Answers

12 verified answers
1
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Which base is found only in DNA?

A
adenine
B
guanine
C
cytosine
D
thymine
4

What does DNA provide the code for?

A
nitrogenous base pairing
B
protein synthesis
C
deoxyribose formation
D
nucleotide synthesis
5

What purpose does the peptide bond serve in protein synthesis?

A
It connects amino acids.
B
It adds a water molecule to the amino acid chain.
C
It releases the protein from the tRNA.
D
It makes a strand of mRNA.
8

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

A
Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutation decreases as well.
B
Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations increases as well.
C
Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations decreases considerably.
D
Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutations increases considerably.
9

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

A
Translation will begin early.
B
Transcription will not begin.
C
RNA polymerase will unwind DNA strands.
D
An mRNA strand will be made before translation begins.
10

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.

A
It is specific to one biochemical reaction.
B
It increases the activation energy needed for a reaction.
C
It can catalyze many different reactions.
D
It increases the rate of a biochemical reaction.
E
It slows down the rate of a biochemical reaction.
11

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

A
DNA contains ribose, while RNA contains deoxyribose.
B
DNA is single-stranded, whereas RNA is double-stranded.
C
DNA contains thymine, while RNA contains uracil.
D
RNA is found only in the nucleus, while DNA is found only in the cytoplasm.

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