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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
DNA
C
proteins
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 mice developed pneumonia
C
The harmless bacteria died
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
The virus's DNA was injected into the bacteria
B
The virus's protein coat was injected into the bacteria
C
The virus's DNA was not injected into the bacteria
D
Genes are made of protein
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
adenine molecules in DNA is about equal to the percentage of guanine molecules
B
purines in DNA is much greater than the percentage of pyrimidines
C
pyrimidines in DNA is about equal to the percentage of purines
D
cytosine molecules in DNA is much greater than the percentage of guanine molecules
6) DNA is copied during a process called
A
replication
B
transformation
C
transcription
D
translation
7) DNA Replication results in two DNA molecules,
A
each with one new strand and one original strand
B
each with two original strands
C
each with two new strands
D
one with two new strands and the other 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
GATCCA
D
TCGAAC
9) In eukaryotes, DNA
A
is circular
B
is located in the nucleus
C
is located in the ribosome
D
floats freely in the cytoplasm
10) In prokaryotes, DNA
A
single stranded
B
is leanear
C
associated with histones
D
not double helix
11) during mitosis, the
A
DNA molecules become more tightly coiled
B
histones and DNA molecules separate
C
DNA molecules unwind
D
nucleosomes become less tightly packed
12) Which of the following included all the others?
A
DNA molecules
B
histones
C
nucleosomes
D
chromosomes
13) DNA stands for
A
deoxyribonucleic acid
B
deoxyribose nuucleicacid
C
deoxyribose nucleic acid
D
deoxyribosenucleic acid
14) In eukaryotes, DNA replication proceeds in one direction down the DNA molecule.
A
False
B
True
15) The replication of a DNA molecule results in four copies of the same gene
A
False
B
True
16) The enzyme that unzips the DNA double helix strand
A
RNA Primer
B
DNA Helicase
C
DNA Ligase
D
DNA Polymerase
17) The nucleotides adenine and thymine form _______ hydrogen bonds.
A
one
B
four
C
three
D
two
18) The nucleotides cytosine and guanine form ________ hydrogen bonds.
A
four
B
two
C
one
D
three
19) SSB's are proteins that prevent the double helix from re-bonding.
A
single starting binding proteins
B
single starting bonding proteins
C
single stranded 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
Kawazaki fragments
C
Kazaki fragments
D
Okinawa fragments
*select an answer for all questions
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