Biology 101 - General Biology » Spring 2022 » Module 3 Quiz 2 (2)
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Question #1
In an analysis of the nucleotide composition of DNA, which statement is true?
A.
A = C
B.
A + T = G + C
C.
C = T
D.
A = T and C = G
Question #2
During DNA replication, what is the function of DNA ligase?
A.
It lengthens chromosome telomeres.
B.
It joins Okazaki fragments together.
C.
It unwinds the double helix.
D.
It makes an RNA primer.
Question #3
Using the DNA template strand shown below, which strand is the complementary DNA strand that would be synthesized during DNA replication?
A.
G A A T T G C A G C C T A T G
B.
C A U A G G C U G C A A U U G
C.
C A T A G G C T G C A A T T C
D.
G T A T C C G A C G T T A A G
E.
C A T A G G C T G C A A T T C
Question #4
Which molecule or structure is NOT needed during DNA replication?
A.
ribosome
B.
DNA template molecule
C.
DNA nucleotide
D.
RNA primer
Question #5
Which of the following statements best describes the eukaryotic chromosome?
A.
It consists of a single linear molecule of double-stranded DNA plus proteins.
B.
The nucleosome is its most basic functional subunit.
C.
It is composed of DNA alone.
D.
The number of genes on each chromosome is different in different cell types of an organism.
Question #6
The synthesis of RNA using information in the DNA is called ____________________________.
A.
RNA processing
B.
transcription
C.
translation
D.
DNA replication
Question #7
The DNA sequence AGT is complementary to the mRNA sequence ______________.
A.
TCA
B.
UCA
C.
UGA
D.
ACU
Question #8
When RNA polymerase moves along the DNA template, unwinding the DNA strands, and adding nucleotides to the growing RNA molecule, this is called ____________________________.
A.
transcription modification
B.
transcription initiation
C.
transcription elongation
D.
transcription termination
Question #9
RNA polymerase moves in which direction along the DNA?
A.
5' to 3' along the double-stranded DNA
B.
3' to 5' along the nontemplate strand
C.
3' to 5' along the template strand
D.
5' to 3' along the template strand
Question #10
The molecule that carries an amino acid to the ribosome is called a(n) _____________________________.
A.
DNA
B.
tRNA
C.
promoter
D.
mRNA
Question #11
When a protein will be secreted (exported) from the cell, it will be translated by ribosomes _______________________________.
A.
in the nucleus
B.
in the cytosol
C.
outside the cell
D.
on the rough endoplasmic reticulum
Question #12
Which mutation is an example of a frameshift mutation?
A.
the substitution of one nucleotide
B.
the substitution of two nucleotides
C.
the insertion of one nucleotide
D.
the deletion of three nucleotides
Question #13
In a eukaryotic cell, events that happen ____________________________transcription can influence how much gene expression occurs, including how much of the final gene product (protein or RNA) is present in the cell.
A.
before, during, and after
B.
before
C.
after
D.
during
Question #14
In prokaryotes, which molecule is a protein that binds to DNA and changes gene expression?
A.
activator
B.
operon
C.
promoter
D.
inducer
Question #15
The term "gene regulation" means that all of a cell's genes are turned on at all times.
A.
True
B.
False
Question #16
Since Watson and Crick described DNA in 1953, which of the following statements might best explain why the function of small RNAs is still being explained?
A.
Ethical considerations prevented scientists from exploring this material until recently.
B.
Watson and Crick described DNA but did not predict any function for RNA.
C.
As RNAs have evolved since that time, they have taken on new functions.
D.
The functions of small RNAs could not be approached until the entire human genome was sequenced.
E.
Changes in technology as well as our ability to determine how much of the DNA is expressed have now made this possible.
Question #17
When compared to a eukaryotic cell, a prokaryotic cell usually has ______________________ DNA.
A.
more
B.
less
C.
the same amount of
D.
no
Question #18
When does unequal crossing over occur?
A.
during protein modification
B.
during DNA replication
C.
during RNA processing
D.
during meiosis
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