AAMC 4 B/B Q&A GRADE A
A defining characteristic of proteins that act as transcription factors (such as STAT5b) is
that they:
A.
can dimerize.
B.
can phosphorylate other proteins.
C.
contain a DNA binding domain.
D.
are present within the nucleus of the cell. - (correct answer)C
I chose D but i forgot that other protiens (like steroids) can go to the nucleus
other prots can also exist in nucleus w/o altering transcription
Based on the passage, ACC2 is most likely compartmentalized to:
A.
the mitochondria.
B.
the cell membrane.
C.
the cytosol.
D.
the lysosome. - (correct answer)A. i was right
ACC2 involved in F.A ox which takes place in mitochondria
Based on the passage, as compared to a wild-type mouse, an Acc2-/-/Cpt1-/- double
knockout mouse is most likely to exhibit:
, A.
increased insulin secretion.
B.
decreased fatty acid oxidation.
C.
decreased triglyceride synthesis.
D.
increased malonyl-CoA production. - (correct answer)B: i was right
CPT1 is needed in carnitine shuttle to transport F.A into mitochondria for oxidation
No CPT1=no transport regardless of presence/absense of ACC2
Bacteriophages were labeled with radioactive phosphorous (32P) and sulfur (35S). The
labeled bacteriophages were then allowed to infect their host cells. At the end of the
experiment, the 32P label was found only inside the host cells and the 35S label was
found only outside the host cells. This experiment shows that:
A.
bacteriophages consist only of DNA and protein.
B.
only DNA, not protein, can enter the host cell.
C.
only protein, not DNA, can enter the host cell.
D.
both DNA and protein can enter the host cell. - (correct answer)B: I was right
P found in DNA
S found in prots
As blood passes through actively contracting skeletal muscle tissue, the affinity of
hemoglobin for oxygen in the muscle tissue:
A defining characteristic of proteins that act as transcription factors (such as STAT5b) is
that they:
A.
can dimerize.
B.
can phosphorylate other proteins.
C.
contain a DNA binding domain.
D.
are present within the nucleus of the cell. - (correct answer)C
I chose D but i forgot that other protiens (like steroids) can go to the nucleus
other prots can also exist in nucleus w/o altering transcription
Based on the passage, ACC2 is most likely compartmentalized to:
A.
the mitochondria.
B.
the cell membrane.
C.
the cytosol.
D.
the lysosome. - (correct answer)A. i was right
ACC2 involved in F.A ox which takes place in mitochondria
Based on the passage, as compared to a wild-type mouse, an Acc2-/-/Cpt1-/- double
knockout mouse is most likely to exhibit:
, A.
increased insulin secretion.
B.
decreased fatty acid oxidation.
C.
decreased triglyceride synthesis.
D.
increased malonyl-CoA production. - (correct answer)B: i was right
CPT1 is needed in carnitine shuttle to transport F.A into mitochondria for oxidation
No CPT1=no transport regardless of presence/absense of ACC2
Bacteriophages were labeled with radioactive phosphorous (32P) and sulfur (35S). The
labeled bacteriophages were then allowed to infect their host cells. At the end of the
experiment, the 32P label was found only inside the host cells and the 35S label was
found only outside the host cells. This experiment shows that:
A.
bacteriophages consist only of DNA and protein.
B.
only DNA, not protein, can enter the host cell.
C.
only protein, not DNA, can enter the host cell.
D.
both DNA and protein can enter the host cell. - (correct answer)B: I was right
P found in DNA
S found in prots
As blood passes through actively contracting skeletal muscle tissue, the affinity of
hemoglobin for oxygen in the muscle tissue:
