Chapter 14 questions with complete
solution 2025
If DNA of a particular species was analyzed and it was found that it contains
27 percent A, what would be the percentage of C?
a.27 percent
b.30 percent
c.23 percent
d.54 percent - correct answer ✔c
The experiments by Hershey and Chase helped confirm that DNA was the
hereditary material on the basis of the finding that:
a.radioactive phage were found in the pellet
b.radioactive cells were found in the supernatant
c.radioactive sulfur was found inside the cell
d.radioactive phosphorus was found in the cell - correct answer ✔d
Bacterial transformation is a major concern in many medical settings. Why
might health care providers be concerned?
a.Pathogenic bacteria could introduce disease-causing genes in non-
pathogenic bacteria.
b.Antibiotic resistance genes could be introduced to new bacteria to create
"superbugs."
c.Bacteriophages could spread DNA encoding toxins to new bacteria.
, d.All of the above. - correct answer ✔d
DNA double helix does not have which of the following?
a.antiparallel configuration
b.complementary base pairing
c.major and minor grooves
d.uracil - correct answer ✔d
In eukaryotes, what is the DNA wrapped around?
a.single-stranded binding proteins
b.sliding clamp
c.polymerase
d.histones - correct answer ✔d
Meselson and Stahl's experiments proved that DNA replicates by which
mode?
a.conservative
b.semi-conservative
c.dispersive
d.none of the above - correct answer ✔b
If the sequence of the 5'-3' strand is AATGCTAC, then the complementary
sequence has the following sequence:
solution 2025
If DNA of a particular species was analyzed and it was found that it contains
27 percent A, what would be the percentage of C?
a.27 percent
b.30 percent
c.23 percent
d.54 percent - correct answer ✔c
The experiments by Hershey and Chase helped confirm that DNA was the
hereditary material on the basis of the finding that:
a.radioactive phage were found in the pellet
b.radioactive cells were found in the supernatant
c.radioactive sulfur was found inside the cell
d.radioactive phosphorus was found in the cell - correct answer ✔d
Bacterial transformation is a major concern in many medical settings. Why
might health care providers be concerned?
a.Pathogenic bacteria could introduce disease-causing genes in non-
pathogenic bacteria.
b.Antibiotic resistance genes could be introduced to new bacteria to create
"superbugs."
c.Bacteriophages could spread DNA encoding toxins to new bacteria.
, d.All of the above. - correct answer ✔d
DNA double helix does not have which of the following?
a.antiparallel configuration
b.complementary base pairing
c.major and minor grooves
d.uracil - correct answer ✔d
In eukaryotes, what is the DNA wrapped around?
a.single-stranded binding proteins
b.sliding clamp
c.polymerase
d.histones - correct answer ✔d
Meselson and Stahl's experiments proved that DNA replicates by which
mode?
a.conservative
b.semi-conservative
c.dispersive
d.none of the above - correct answer ✔b
If the sequence of the 5'-3' strand is AATGCTAC, then the complementary
sequence has the following sequence:
