Microsatellite instability correct answers change in length of microsatellite due to insertion/deletion compared to normal tissue -> failure of error correction by DNA repair -> defective MMR (mismatch repair) -> frameshift mutation in coding region
heat-shock proteins correct answers A...
AAMC FL 1 B/B || with 100% Verified Solutions.
Microsatellite instability correct answers change in length of microsatellite due to
insertion/deletion compared to normal tissue -> failure of error correction by DNA repair ->
defective MMR (mismatch repair) -> frameshift mutation in coding region
heat-shock proteins correct answers A protein that helps prevent the denaturation of other
proteins in high temperature environments.
dominant allele correct answers An allele whose trait always shows up in the organism when the
allele is present.
inverse relationship correct answers a relationship in which one variable decreases when another
variable increases
Which nucleotide pairing(s) would be recognized by the MMR system during DNA replication?
dTMP and dCMP
dGMP and dAMP
dAMP and dTMP
A.
I only
B.
III only
C.
I and II only
D.
I, II, and III correct answers C.
Only these are mismatched pairs
adhesion proteins correct answers Adhesion proteins are membrane proteins that form junctions
between adjacent cells.
chaperone proteins correct answers assist in folding other proteins
Clathrin correct answers protein that coats the inward-facing surface of the plasma membrane
and assists in the formation of specialized structures, like coated pits, for phagocytosis
enzyme proteins correct answers catalyze chemical reactions
signal sequence correct answers the directions for the transport of proteins to different parts of
the cell; provided by the first few amino acids synthesized on the ribosomes
Introns correct answers Noncoding segments of nucleic acid that lie between coding sequences.
Promoters correct answers region of DNA that indicates to an enzyme where to bind to make
RNA
, nuclear localization signal correct answers A short amino acid sequence that marks a protein for
delivery to the nucleus.
Chemiosmosis correct answers A process for synthesizing ATP using the energy of an
electrochemical gradient and the ATP synthase enzyme.
Pellagra also results from a deficiency of nicotinamide, which is synthesized from tryptophan.
Nicotinamide nucleotides are neither oxidized nor reduced during which step of cellular
respiration?
A.
Glycolysis
B.
Chemiosmosis
C.
Citric acid cycle
D.
Electron transport chain correct answers B
NAD+ is the oxidized form, and NADH is the reduced form of nicotinamide adenine
dinucleotide. NAD+ is neither reduced to form NADH, nor is NADH oxidized to form NAD+
specifically during chemiosmosis.
During the initiation of muscle contraction, mysosin binds actin after troponin binds to which
ion?
A.
H+
B.
K+
C.
Na+
D.
Ca2+ correct answers D
during the initiation of muscle contraction, free Ca2+ in the cytosol binds to troponin, which
pulls tropomyosin away from actin's myosin-binding site. This allows myosin to bind to actin.
What is the total number of fused rings present in a steroid?
A.
1
B.
2
C.
4
D.
6 correct answers c
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