BIOL 1201 - FINAL EXAM STUDY GUIDE
(NEW MATERIAL) WITH CORRECT
SOLUTIONS
The trypotphan operon is a repressible that is - ANSWER-Turned off when trypotphan is
added to the growth medium
Which of these proteins is produced by a regulatory gene? - ANSWER-Repressor
The lactose operon is likely to be transcribed when - ANSWER-the cylic AMP and
lactose levels are both high within the cell
If you were to observe the activity of methylated DNA, you would expect it to have -
ANSWER-Have turned off or slowed down the process of transcription
In a nucleosome, what is the DNA wrapped around? - ANSWER-Histones
Muscle cells and nerve cells in one species of animal owe their differences in structure
to - ANSWER-Having different gene expressions
In eukaryotes, transcription factors - ANSWER-Bind to a sequence elements within the
promoter.
Gene expression might be altered at the level of post transcriptional processing in
eukaryotes rather than prokaryotes because of - ANSWER-Eukaryotic exons may be
spliced in alternative patterns
Which of the following is most likely to have a small protein called ubiquitin attached to
it? - ANSWER-A cyclin protein that functions in the G1 and now the cell is in G2
Why are viruses referred to as obligate parasites? - ANSWER-They can't reproduce
outside of a host cell.
Viral genomes can consist of all of the following except: 1. Double Stranded DNA, 2.
Double Stranded RNA, 3. Single Stranded DNA, 4. Single Stranded RNA. 5. Helical
capsomeres - ANSWER-Helical Capsomeres
Viruses with single stranded RNA that acts as a template for DNA synthesis are known
as? - ANSWER-Retroviruses
What is the function of reverse transcriptase in retroviruses? - ANSWER-Uses viral
RNA as a template for DNA synthesis
, Viral envelopes contain proteins with covalently attached carbohydrate groups called -
ANSWER-Glycoproteins
The difference between vertical and horizontal transmission of plant viruses is that -
ANSWER-Vertical transmission refers to the transmission of a virus from a parent plant
to its progeny, and horizontal transmission refers to one plant spreading the viruses to
another plant.
Which of the following characteristics, structures or processes is common to both
bacteria and viruses?
a. Metabolism
b. Ribosomes
c. Genetic Material Composed of Nucleic Acid
d. Cell Division
e. Independent - ANSWER-Genetic Material Composed of Nucleic Acid
From the perspective of a cell receiving a message, the three stages of cell signaling
are - ANSWER-Signal Reception, Signal Transduction, and Cellular Response.
An example of long distance cell communication is - ANSWER-Hormone Signaling
A small molecule that specifically binds to a larger one - ANSWER-Ligand
Most signal molecules
a. Bind to specific site on a receptor protein in a membrane
b. Are water soluble
c. Are able to pass through the plasma membrane by active transport
d. A and B
e. A, B, and C. - ANSWER-D. A and B
Synaptic signaling between adjacent neurons is like hormone signaling in which way? -
ANSWER-It requires binding of a signaling molecule to a receptor
The general name for an enzyme that REMOVES phosphate groups from activated
enzymes is - ANSWER-Phosphatase
The general name for an enzyme that ADDS phosphate groups to an activated enzyme
is - ANSWER-Phosphorylase
Which of the following is (are) true of ligand-gated ion channels?
a. They are import in the nervous system
b. They lead to changes in sodium and calcium concentrations in cells.
c. They open or close in response to a chemical signal. - ANSWER-All of the Above
Which of the following are true of ligand-gated ion channels?
(NEW MATERIAL) WITH CORRECT
SOLUTIONS
The trypotphan operon is a repressible that is - ANSWER-Turned off when trypotphan is
added to the growth medium
Which of these proteins is produced by a regulatory gene? - ANSWER-Repressor
The lactose operon is likely to be transcribed when - ANSWER-the cylic AMP and
lactose levels are both high within the cell
If you were to observe the activity of methylated DNA, you would expect it to have -
ANSWER-Have turned off or slowed down the process of transcription
In a nucleosome, what is the DNA wrapped around? - ANSWER-Histones
Muscle cells and nerve cells in one species of animal owe their differences in structure
to - ANSWER-Having different gene expressions
In eukaryotes, transcription factors - ANSWER-Bind to a sequence elements within the
promoter.
Gene expression might be altered at the level of post transcriptional processing in
eukaryotes rather than prokaryotes because of - ANSWER-Eukaryotic exons may be
spliced in alternative patterns
Which of the following is most likely to have a small protein called ubiquitin attached to
it? - ANSWER-A cyclin protein that functions in the G1 and now the cell is in G2
Why are viruses referred to as obligate parasites? - ANSWER-They can't reproduce
outside of a host cell.
Viral genomes can consist of all of the following except: 1. Double Stranded DNA, 2.
Double Stranded RNA, 3. Single Stranded DNA, 4. Single Stranded RNA. 5. Helical
capsomeres - ANSWER-Helical Capsomeres
Viruses with single stranded RNA that acts as a template for DNA synthesis are known
as? - ANSWER-Retroviruses
What is the function of reverse transcriptase in retroviruses? - ANSWER-Uses viral
RNA as a template for DNA synthesis
, Viral envelopes contain proteins with covalently attached carbohydrate groups called -
ANSWER-Glycoproteins
The difference between vertical and horizontal transmission of plant viruses is that -
ANSWER-Vertical transmission refers to the transmission of a virus from a parent plant
to its progeny, and horizontal transmission refers to one plant spreading the viruses to
another plant.
Which of the following characteristics, structures or processes is common to both
bacteria and viruses?
a. Metabolism
b. Ribosomes
c. Genetic Material Composed of Nucleic Acid
d. Cell Division
e. Independent - ANSWER-Genetic Material Composed of Nucleic Acid
From the perspective of a cell receiving a message, the three stages of cell signaling
are - ANSWER-Signal Reception, Signal Transduction, and Cellular Response.
An example of long distance cell communication is - ANSWER-Hormone Signaling
A small molecule that specifically binds to a larger one - ANSWER-Ligand
Most signal molecules
a. Bind to specific site on a receptor protein in a membrane
b. Are water soluble
c. Are able to pass through the plasma membrane by active transport
d. A and B
e. A, B, and C. - ANSWER-D. A and B
Synaptic signaling between adjacent neurons is like hormone signaling in which way? -
ANSWER-It requires binding of a signaling molecule to a receptor
The general name for an enzyme that REMOVES phosphate groups from activated
enzymes is - ANSWER-Phosphatase
The general name for an enzyme that ADDS phosphate groups to an activated enzyme
is - ANSWER-Phosphorylase
Which of the following is (are) true of ligand-gated ion channels?
a. They are import in the nervous system
b. They lead to changes in sodium and calcium concentrations in cells.
c. They open or close in response to a chemical signal. - ANSWER-All of the Above
Which of the following are true of ligand-gated ion channels?
