BS 161 RIQ 16-17 questions with verified answers
a cell does not fully replicate its DNA but proceeds through M phase: Ans✓✓✓ at
least one daughter cell will have <5 pg of DNA
A cell does not respond to the ligand because: Ans✓✓✓ it does not have a
receptor to bind to the ligand, so the signal transduction is not activated and
there is no cellular response
a cell is treated with a drug that prevents cytokinesis from occurring: Ans✓✓✓
the cell will have 10 pg DNA (and two nuclei)
AFTER the serine is phosphorylated, the serine can form blank within the protein
and with other molecules. Ans✓✓✓ ionic bond interactions
Although the structures of G proteins vary, all G proteins can bind to _blank or
blank Ans✓✓✓ GTP
GDP
Another change that occurred to the receptor is; What is needed to reverse the
above change? Ans✓✓✓ phosphorylation of the receptor
phosphatase
Assuming the chromatids were divided equally among two daughter cells, the
daughter cells blank have the same DNA sequence as the parent cell in G1, blank
Ans✓✓✓ would
,all the DNA is duplicated in S phase so there are two copies of each gene with
identical sequences, which allows each daughter cell to receive identical
information when the DNA is divided
At which stage in the cell cycle is the DNA amount the highest? Ans✓✓✓ G2
Based on the model in the previous activity, state the number of copies of genes
A, B, and C that are present in the model of G1 (before S phase) (i.e. how many
times does each gene appear in the model?): Ans✓✓✓ each gene is found once
(one copy of each gene).
Based on the model in this activity, how does one chromatid of a chromosome
compare to the other chromatid in the same chromosome: Ans✓✓✓ he
chromatids in a chromosome are identical to each other.
Based on the model in this activity, state the number of copies of genes A, B, and
C that are present in the model of G2 (after S phase): Ans✓✓✓ Each gene is
found twice (two copies of each gene).
Based on the model in this activity, what will attach to the chromosomes, and
where will it attach, to arrange the chromosomes in a line in the middle of the
cell? Ans✓✓✓ spindle fibers attach to kinetochores at centromeres on each
chromatid.
Based on your model, describe two physical differences between active and
inactive forms of a G protein. Ans✓✓✓ the G protein is bound to GTP instead of
GDP difference
, the G protein shape is different (allows it to interact with other proteins and carry
out different functions)
BEFORE interacting with a kinase, the serine side chain contains a hydroxyl group,
which can form blank Ans✓✓✓ h-bond interaction
chromosome Ans✓✓✓ a structure of DNA and proteins in cells; visible
chromosomes are a highly condensed form of DNA wrapped around proteins and
observed during M phase of the cell cycle
Compare the inactive vs active protein in the model. Based on the model, what is
the role of ATP in allowing the protein to bind to the square molecule? Ans✓✓✓
ATP donates a
phosphate to the protein, changing its shape so it can fit the square molecule.
Describe the function of a transcription factor: Ans✓✓✓ transcription factors
bind to DNA and can activate transcription by attracting RNA polymerase to the
DNA
Describe the function of RNA polymerase: Ans✓✓✓ RNA polymerase binds near
gene promoters and carries out the process of transcription
Describe two features that all receptors have in common Ans✓✓✓ Interact with
a specific ligand
Change shape after binding to the ligand
Describe what happens in a phosphorylation reaction: Ans✓✓✓ A phosphate is
transferred from ATP to a target protein
a cell does not fully replicate its DNA but proceeds through M phase: Ans✓✓✓ at
least one daughter cell will have <5 pg of DNA
A cell does not respond to the ligand because: Ans✓✓✓ it does not have a
receptor to bind to the ligand, so the signal transduction is not activated and
there is no cellular response
a cell is treated with a drug that prevents cytokinesis from occurring: Ans✓✓✓
the cell will have 10 pg DNA (and two nuclei)
AFTER the serine is phosphorylated, the serine can form blank within the protein
and with other molecules. Ans✓✓✓ ionic bond interactions
Although the structures of G proteins vary, all G proteins can bind to _blank or
blank Ans✓✓✓ GTP
GDP
Another change that occurred to the receptor is; What is needed to reverse the
above change? Ans✓✓✓ phosphorylation of the receptor
phosphatase
Assuming the chromatids were divided equally among two daughter cells, the
daughter cells blank have the same DNA sequence as the parent cell in G1, blank
Ans✓✓✓ would
,all the DNA is duplicated in S phase so there are two copies of each gene with
identical sequences, which allows each daughter cell to receive identical
information when the DNA is divided
At which stage in the cell cycle is the DNA amount the highest? Ans✓✓✓ G2
Based on the model in the previous activity, state the number of copies of genes
A, B, and C that are present in the model of G1 (before S phase) (i.e. how many
times does each gene appear in the model?): Ans✓✓✓ each gene is found once
(one copy of each gene).
Based on the model in this activity, how does one chromatid of a chromosome
compare to the other chromatid in the same chromosome: Ans✓✓✓ he
chromatids in a chromosome are identical to each other.
Based on the model in this activity, state the number of copies of genes A, B, and
C that are present in the model of G2 (after S phase): Ans✓✓✓ Each gene is
found twice (two copies of each gene).
Based on the model in this activity, what will attach to the chromosomes, and
where will it attach, to arrange the chromosomes in a line in the middle of the
cell? Ans✓✓✓ spindle fibers attach to kinetochores at centromeres on each
chromatid.
Based on your model, describe two physical differences between active and
inactive forms of a G protein. Ans✓✓✓ the G protein is bound to GTP instead of
GDP difference
, the G protein shape is different (allows it to interact with other proteins and carry
out different functions)
BEFORE interacting with a kinase, the serine side chain contains a hydroxyl group,
which can form blank Ans✓✓✓ h-bond interaction
chromosome Ans✓✓✓ a structure of DNA and proteins in cells; visible
chromosomes are a highly condensed form of DNA wrapped around proteins and
observed during M phase of the cell cycle
Compare the inactive vs active protein in the model. Based on the model, what is
the role of ATP in allowing the protein to bind to the square molecule? Ans✓✓✓
ATP donates a
phosphate to the protein, changing its shape so it can fit the square molecule.
Describe the function of a transcription factor: Ans✓✓✓ transcription factors
bind to DNA and can activate transcription by attracting RNA polymerase to the
DNA
Describe the function of RNA polymerase: Ans✓✓✓ RNA polymerase binds near
gene promoters and carries out the process of transcription
Describe two features that all receptors have in common Ans✓✓✓ Interact with
a specific ligand
Change shape after binding to the ligand
Describe what happens in a phosphorylation reaction: Ans✓✓✓ A phosphate is
transferred from ATP to a target protein
