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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
proteins
B
RNA
C
carbohydrates
D
DNA
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 mice developed pneumonia
C
The mice were unaffected
D
The harmless bacteria died
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 protein coat was injected into the bacteria
C
The virus's DNA was not 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 + uracile
B
deoxyribose + phosphate group + thymine
C
ribose + phosphate group + uracil
D
ribose + phosphate group + thymine
5) Because of base pairing in DNA, the percentage of
A
cytosine molecules in DNA is much greater than the percentage of guanine molecules
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
pyrimidines in DNA is about equal to the percentage of purines
6) DNA is copied during a process called
A
replication
B
translation
C
transformation
D
transcription
7) DNA Replication results in two DNA molecules,
A
one with two new strands and the other with two original strands
B
each with two original strands
C
each with one new strand and one original strand
D
each with two new strands
8) During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
A
GATCCA
B
AGCTTG
C
TCGAAC
D
GAUCCA
9) In eukaryotes, DNA
A
is located in the nucleus
B
is located in the ribosome
C
is circular
D
floats freely in the cytoplasm
10) In prokaryotes, DNA
A
is leanear
B
single stranded
C
associated with histones
D
not double helix
11) during mitosis, the
A
DNA molecules unwind
B
nucleosomes become less tightly packed
C
histones and DNA molecules separate
D
DNA molecules become more tightly coiled
12) Which of the following included all the others?
A
chromosomes
B
nucleosomes
C
DNA molecules
D
histones
13) DNA stands for
A
deoxyribose nuucleicacid
B
deoxyribosenucleic acid
C
deoxyribonucleic acid
D
deoxyribose nucleic acid
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
RNA Primer
B
DNA Ligase
C
DNA Helicase
D
DNA Polymerase
17) The nucleotides adenine and thymine form _______ hydrogen bonds.
A
three
B
four
C
one
D
two
18) The nucleotides cytosine and guanine form ________ hydrogen bonds.
A
one
B
four
C
two
D
three
19) SSB's are proteins that prevent the double helix from re-bonding.
A
single starting bonding proteins
B
single stranded binding proteins
C
single starting binding proteins
D
single stranded bonding proteins
20) The name of the fragment found on the lagging strand during DNA replication
A
Okazaki fragments
B
Kazaki fragments
C
Okinawa fragments
D
Kawazaki fragments
*select an answer for all questions
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