Question 17 (2 points) Transcription is a process by which: a) Messenger RNA is

Question

Question 17 (2 points)

Transcription is a process by which:

a) 

Messenger RNA is used as a template to synthesize a protein.

b) 

DNA is used as a template to synthesize a new DNA strand.

c) 

DNA is used as a template to synthesize a messenger RNA strand.

Question 18 (2 points)

On a nucleic acid strand, which of the following is located at the 3' end (note: --- symbolizes the bond to the rest of the nucleic acid strand)?

a) 

---OH

b) 

---COO

c) 

---PO42

d) 

---NH3+

Question 19 (2 points)

What type of bond is used to link nucleotides together in a single nucleic acid strand?

a) 

Glycosidic bond

b) 

Phosphate diester bond

c) 

Peptide bond

d) 

Hydrogen bond

Question 20 (2 points)
 

Consider the sequence of the following DNA template strand: 3'AGTCCGTAC5'.  What is the sequence of the protein synthesized from this region of the DNA?

a) 

Val-Arg-Thr

b) 

Ser-Gly-Met

c) 

His-Ala-Stop

d) 

Ser-Pro-Tyr

Explanation / Answer

1) option C. Transcription is a process by which DNA is used as a template to synthesize a messenger RNA strand.

2) option A. On a nucleic acid strand, -----OH (hydroxyl group) is located at the 3' end.

3) option B. Phosphate diester bond is used to link nucleotides together in a single nucleic acid strand.

4) option B. 3'AGTCCGTAC5'

5' TCA GGC ATG 3'

Ser-Gly-Met.

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