DNA And DNA Replication Question Preview (ID: 30574)


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during mitosis, the
a) DNA molecules unwind
b) histones and DNA molecules separate
c) DNA molecules become more tightly coiled
d) nucleosomes become less tightly packed

Which of the following included all the others?
a) DNA molecules
b) histones
c) chromosomes
d) nucleosomes

In eukaryotes, DNA
a) is located in the nucleus
b) floats freely in the cytoplasm
c) is located in the ribosome
d) is circular

In prokaryotes, DNA
a) is leanear
b) associated with histones
c) single stranded
d) not double helix

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
a) TCGAAC
b) GATCCA
c) AGCTTG
d) GAUCCA

DNA is copied during a process called
a) replication
b) translation
c) transcription
d) transformation

DNA Replication results in two DNA molecules,
a) each with two new strands
b) one with two new strands and the other with two original strands
c) each with one new strand and one original strand
d) each with two original strands

Because of base pairing in DNA, the percentage of
a) adenine molecules in DNA is about equal to the percentage of guanine molecules
b) pyrimidines in DNA is about equal to the percentage of purines
c) purines in DNA is much greater than the percentage of pyrimidines
d) cytosine molecules in DNA is much greater than the percentage of guanine molecules

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

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 protein coat was injected into the bacteria
b) The virus's DNA was not injected into the bacteria
c) Genes are made of protein
d) The virus's DNA was injected into the bacteria

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

Avery’s experiments showed that bacteria are transformed by
a) RNA
b) DNA
c) proteins
d) carbohydrates

DNA stands for
a) deoxyribose nucleic acid
b) deoxyribosenucleic acid
c) deoxyribonucleic acid
d) deoxyribose nuucleicacid

In eukaryotes, DNA replication proceeds in one direction down the DNA molecule.
a) True
b) False
c)
d)

The replication of a DNA molecule results in four copies of the same gene
a) True
b) False
c)
d)

The enzyme that unzips the DNA double helix strand
a) DNA Polymerase
b) RNA Primer
c) DNA Helicase
d) DNA Ligase

The nucleotides adenine and thymine form _______ hydrogen bonds.
a) one
b) two
c) three
d) four

The nucleotides cytosine and guanine form ________ hydrogen bonds.
a) one
b) two
c) three
d) four

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 binding proteins
d) single starting bonding proteins

The name of the fragment found on the lagging strand during DNA replication
a) Kawazaki fragments
b) Okazaki fragments
c) Kazaki fragments
d) Okinawa fragments

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