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DNA And DNA Replication
Test Description: Review for an assessment
Instructions: Answer all questions to get your test result.
1) Avery’s experiments showed that bacteria are transformed by
A
RNA
B
proteins
C
DNA
D
carbohydrates
2) What did Griffith observe when he injected a mixture of heat-killed, disease-causing bacteria and live harmless bacteria into mice?
A
The disease-causing bacteria changed into harmless bacteria.
B
The harmless bacteria died
C
The mice developed pneumonia
D
The mice were unaffected
3) What would Hershey and Chase have concluded if both radioactive 32P and 35S were found in the bacteria in their experiment?
A
Genes are made of protein
B
The virus's DNA was not injected into the bacteria
C
The virus's protein coat was injected into the bacteria
D
The virus's DNA was injected into the bacteria
4) Which of the following is a nucleotide found in DNA?
A
ribose + phosphate group + thymine
B
ribose + phosphate group + uracile
C
deoxyribose + phosphate group + thymine
D
ribose + phosphate group + uracil
5) Because of base pairing in DNA, the percentage of
A
pyrimidines in DNA is about equal to the percentage of purines
B
purines in DNA is much greater than the percentage of pyrimidines
C
adenine molecules in DNA is about equal to the percentage of guanine molecules
D
cytosine molecules in DNA is much greater than the percentage of guanine molecules
6) DNA is copied during a process called
A
transformation
B
transcription
C
replication
D
translation
7) DNA Replication results in two DNA molecules,
A
each with one new strand and one original strand
B
one with two new strands and the other with two original strands
C
each with two new strands
D
each with two original strands
8) During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
A
GAUCCA
B
AGCTTG
C
TCGAAC
D
GATCCA
9) In eukaryotes, DNA
A
floats freely in the cytoplasm
B
is located in the ribosome
C
is circular
D
is located in the nucleus
10) In prokaryotes, DNA
A
single stranded
B
associated with histones
C
is leanear
D
not double helix
11) during mitosis, the
A
histones and DNA molecules separate
B
DNA molecules become more tightly coiled
C
DNA molecules unwind
D
nucleosomes become less tightly packed
12) Which of the following included all the others?
A
DNA molecules
B
chromosomes
C
histones
D
nucleosomes
13) DNA stands for
A
deoxyribose nucleic acid
B
deoxyribosenucleic acid
C
deoxyribonucleic acid
D
deoxyribose nuucleicacid
14) In eukaryotes, DNA replication proceeds in one direction down the DNA molecule.
A
True
B
False
15) The replication of a DNA molecule results in four copies of the same gene
A
True
B
False
16) The enzyme that unzips the DNA double helix strand
A
DNA Helicase
B
DNA Polymerase
C
RNA Primer
D
DNA Ligase
17) The nucleotides adenine and thymine form _______ hydrogen bonds.
A
four
B
three
C
one
D
two
18) The nucleotides cytosine and guanine form ________ hydrogen bonds.
A
four
B
two
C
three
D
one
19) SSB's are proteins that prevent the double helix from re-bonding.
A
single stranded binding proteins
B
single stranded bonding proteins
C
single starting bonding proteins
D
single starting binding proteins
20) The name of the fragment found on the lagging strand during DNA replication
A
Kawazaki fragments
B
Okazaki fragments
C
Okinawa fragments
D
Kazaki fragments
*select an answer for all questions
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