BIOL 4100 EXAM 2 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024/2025
The image below depicts the Hershey and Chase experiment. Identify where viral
protein and viral DNA would be found by dragging the labels to the correct
targets.
In the centrifuge tube, where is the protein?
In the supernatent
The image below depicts the Hershey and Chase experiment. Identify where viral
protein and viral DNA would be found by dragging the labels to the correct
targets.
In the centrifuge tube, where is the DNA?
In the pellet
Study the image depicting the Avery, McCarty, and MacLeod experiment.
Which of the statements below is supported by the Avery, McCarty, and MacLeod
experiment and the data in the figure?
DNA from one strain of bacteria can alter the phenotype of another strain if that DNA is
taken up by the other strain.
,Identify the iteration of the Griffith experiment that conclusively demonstrated
that transformation must have taken place.
The experiment that combined the living R strain and the S strain of S. pneumoniae that
has been heat-killed
The mouse dies of infection and living, pathogenic S strain recovered
Which option correctly describes the two strands of DNA in a double helix?
antiparallel in orientation
Which structure is normally on the 5' end of a DNA strand?
phosphate group
Which chemical group is at the 3' end of a DNA strand?
a hydroxyl group
What type of bond connects base pairs?
hydrogen
The karyotype below was obtained from a human cell. Based on the chromosome
spread, what cell type could have been used?
Karyotype shows 23 pairs of chromosomes. The 23rd pair contains two X
chromosomes.
female human liver cell
Prokaryotes have chromosomes that are circular in structure. Which of the
following would such chromosomes lack?
telomeres
,In the light microscope, DNA molecules are most visible in which of the
following?
in a cell that is dividing
In the living cell, histone proteins pack DNA into a repeating array of DNA-protein
particles called what?
nucleosomes
What is the term that describes the complex of DNA and proteins that makes up a
eukaryotic chromosome?
chromatin
What structure in an interphase eukaryotic cell is the site of ribosomal RNA
transcription?
nucleolus
Which of the following represents the specialized DNA sequence that attaches to
microtubules and allows duplicated eukaryotic chromosomes to be separated
during M phase?
centromere
What are the specialized DNA sequences that are at the ends of most eukaryotic
chromosomes called?
telomeres
Which of the following is true for most genes?
-A gene is a segment of DNA that contains the instructions for making a particular
protein.
-A gene is a segment of DNA that contains the instructions for making a particular RNA.
, -A gene is a unit of heredity that contains instructions that dictate the characteristics of
an organism.
What does each eukaryotic chromosome contain?
one long double-stranded DNA molecule
The tails of the core histone proteins can be chemically modified by the covalent
addition of what type of chemical group?
-acetyl
-methyl
-phosphate
What is the general name given to the most highly condensed form of chromatin?
heterochromatin
Determine whether the following statement is true or false: When a cell divides,
its chromatin structure is completely reset.
This statement is __________
False
Some applications in biology, such as polymerase chain reaction (PCR), require
melting the DNA double helix into single strands of DNA. This can be
accomplished by heating the DNA. As DNA is heated, why does the double helix
structure denature into single strands of DNA but not into individual nucleotides?
In other words, why do the single strands remain intact even though the double
helix does not?
The double helix is held together with hydrogen bonds, while the single strands are
linked by phosphodiester bonds
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024/2025
The image below depicts the Hershey and Chase experiment. Identify where viral
protein and viral DNA would be found by dragging the labels to the correct
targets.
In the centrifuge tube, where is the protein?
In the supernatent
The image below depicts the Hershey and Chase experiment. Identify where viral
protein and viral DNA would be found by dragging the labels to the correct
targets.
In the centrifuge tube, where is the DNA?
In the pellet
Study the image depicting the Avery, McCarty, and MacLeod experiment.
Which of the statements below is supported by the Avery, McCarty, and MacLeod
experiment and the data in the figure?
DNA from one strain of bacteria can alter the phenotype of another strain if that DNA is
taken up by the other strain.
,Identify the iteration of the Griffith experiment that conclusively demonstrated
that transformation must have taken place.
The experiment that combined the living R strain and the S strain of S. pneumoniae that
has been heat-killed
The mouse dies of infection and living, pathogenic S strain recovered
Which option correctly describes the two strands of DNA in a double helix?
antiparallel in orientation
Which structure is normally on the 5' end of a DNA strand?
phosphate group
Which chemical group is at the 3' end of a DNA strand?
a hydroxyl group
What type of bond connects base pairs?
hydrogen
The karyotype below was obtained from a human cell. Based on the chromosome
spread, what cell type could have been used?
Karyotype shows 23 pairs of chromosomes. The 23rd pair contains two X
chromosomes.
female human liver cell
Prokaryotes have chromosomes that are circular in structure. Which of the
following would such chromosomes lack?
telomeres
,In the light microscope, DNA molecules are most visible in which of the
following?
in a cell that is dividing
In the living cell, histone proteins pack DNA into a repeating array of DNA-protein
particles called what?
nucleosomes
What is the term that describes the complex of DNA and proteins that makes up a
eukaryotic chromosome?
chromatin
What structure in an interphase eukaryotic cell is the site of ribosomal RNA
transcription?
nucleolus
Which of the following represents the specialized DNA sequence that attaches to
microtubules and allows duplicated eukaryotic chromosomes to be separated
during M phase?
centromere
What are the specialized DNA sequences that are at the ends of most eukaryotic
chromosomes called?
telomeres
Which of the following is true for most genes?
-A gene is a segment of DNA that contains the instructions for making a particular
protein.
-A gene is a segment of DNA that contains the instructions for making a particular RNA.
, -A gene is a unit of heredity that contains instructions that dictate the characteristics of
an organism.
What does each eukaryotic chromosome contain?
one long double-stranded DNA molecule
The tails of the core histone proteins can be chemically modified by the covalent
addition of what type of chemical group?
-acetyl
-methyl
-phosphate
What is the general name given to the most highly condensed form of chromatin?
heterochromatin
Determine whether the following statement is true or false: When a cell divides,
its chromatin structure is completely reset.
This statement is __________
False
Some applications in biology, such as polymerase chain reaction (PCR), require
melting the DNA double helix into single strands of DNA. This can be
accomplished by heating the DNA. As DNA is heated, why does the double helix
structure denature into single strands of DNA but not into individual nucleotides?
In other words, why do the single strands remain intact even though the double
helix does not?
The double helix is held together with hydrogen bonds, while the single strands are
linked by phosphodiester bonds
