DNA Mutations Answers

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1
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During which process is mRNA converted into a sequence of amino acids for protein production?

A
transcription
B
translation
C
translocation
D
mRNA synthesis
2
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Which describes the function of a peptide bond?'

A
It connects amino acids.
B
It connects ribosomes.
C
It connects tRNA.
D
It connects anticodons.
3

What is the role of RNA polymerase?

A
It creates the DNA strand.
B
It bonds the DNA strand.
C
It helps transcribe the DNA strand.
D
It translates the DNA strand.
4

Which describes a promoter?

A
the first part of an operon that regulates where, when, and to what level a gene is expressed
B
the part of an operon that, if attached by a repressor protein, suppresses the expression of a gene
C
a cluster of genes that are expressed or repressed as a group
D
an enzyme that helps DNA unzip prior to transcription
5

The diagram shows one step in the process of protein synthesis.Which step is shown?

Question illustration
A
transpiration
B
translocation
C
transcription
D
translation
6

Which organelle is the location where mRNA is translated into a protein?

A
nucleus
B
ribosomes
C
cytoplasm
D
cell membrane
7

Which nucleic acid moves the code for protein synthesis from the nucleus to the ribosomes?

A
dRNA
B
tRNA
C
rRNA
D
mRNA
8

The study of Escherichia coli (E. coli) led researchers to new experimental designs for studying operons. Which experimental design did the scientists use?

A
Used a microscope to observe cell division to determine the structure of operons.
B
Tested the response of E. coli to a variety of chemicals to determine the number of operons that are present.
C
Inserted the operons from one organism into another to determine the mechanism of operon expression.
D
Read the genome sequence to determine the quantity and organization of operons.
9

Which molecule brings amino acids to the ribosomes to be assembled into proteins?

A
tRNA
B
mRNA
C
peptide
D
codon
10

Which occurs during translation?

A
mRNA is created by using a DNA template.
B
mRNA codons are joined by tRNA anticodons to assemble amino acids to form a protein.
C
Protein is formed when a polypeptide chain is broken apart and released from ribosome.
D
One strand of DNA is copied into a strand of rRNA.

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