Answers26-27 Biology ALab: Building Proteins from RNA

Lab: Building Proteins from RNA Answers

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3

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and never

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6

You transcribed DNA to make

A
tRNA
B
mRNA
C
DNA
D
protein
7

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Answers:
direction,:3' to 5'
direction.:5' to 3'
8

Check all ways below to ensure that the bases in RNA are properly paired.

A
The template DNA would be 3’ GUCUACAUGCCUGCUAUU 5’.
B
The mRNA strand is complementary to the DNA template strand.
C
During transcription, G in DNA pairs with C in mRNA, and A in DNA pairs with U in mRNA.
10

Number the steps in the correct order (1 through 5). Transcribe the DNA to create the mRNA. Match the mRNA codons to their tRNA anticodons and the attached amino acids. Perform dehydration synthesis to build the amino acid chain in the ribosome. Locate the start, stop, and other codons on the mRNA. Identify the antisense strand of the DNA within the cell nucleus.

Answers:
Number the steps in the correct order (1 through 5).:2
Number the steps in the correct order (1 through 5).:4
Number the steps in the correct order (1 through 5).:5
Number the steps in the correct order (1 through 5).:3
Number the steps in the correct order (1 through 5).:1
11

How could you be sure you have located a section of DNA that encodes for a protein?

A
Write down the sequence to see what amino acids might be linked together.
B
Allow the DNA to be transcribed to RNA and see what protein results.
C
Compare the faulty protein to the DNA.
12

Check all ways below to ensure that the bases in RNA are properly paired.

A
The template DNA would be 3’ GUCUACAUGCCUGCUAUU 5’.
B
The mRNA strand is complementary to the DNA template strand.
C
During transcription, G in DNA pairs with C in mRNA, and A in DNA pairs with U in mRNA.
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A
tRNA
B
mRNA
C
DNA
D
protein
20

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