BCH3025 Exam 4 Save
Terms in this set (700)
Precursors for the A
biosynthesis of the
pyrimidine ring system
include:
A) carbamoyl,
phosphate, and
aspartate.
B) glutamate, NH3, and
CO2.
C) glycine and succinyl-
CoA.
D) glycine, glutamine,
CO2, and aspartate.
E) inosine and aspartate.
Approximately what D
fraction of the human
genome is tranaposable
elements?
A) 1.5%
B) 5%
C) 10%
D) 45%
E) 80%
,If the structure of a fully C
relaxed, closed-circular
DNA molecule is
changed so that the
specific linking difference
(σ) is -0.05, the number
of:
A) bases is decreased by
5%.
B) bases is increased by
5%.
C) helical turns is
decreased by 5%.
D) helical turns is
increased by 5%.
E) helical turns is
unchanged.
A condensed eukaryotic D
chromosome is known to
be associated with all of
the following proteins,
except for:
A) core histones H2A,
H2B, H3, and H4.
B) histone H1.
C) SMC proteins.
D) topoisomerase I.
E) topoisomerase II.
,One distinction between D
peptide and steroid
hormones is that peptide
hormones:
A) act through
nonspecific receptors,
whereas steroid
hormones act through
specific receptors.
B) are generally water-
insoluble, whereas
steroid hormones are
water soluble.
C) are more stable than
steroid hormones.
D) bind to cell surface
receptors, whereas
steroid hormones bind to
nuclear receptors.
E) bind to their receptors
with high affinity, whereas
steroid hormones bind
with low affinity
An example of an D
eicosanoid hormone is:
A) epinephrine.
B) retinoic acid.
C) testosterone.
D) thromboxane.
E) thyroxine
, An example of a steroid C
hormone is:
A) epinephrine.
B) retinoic acid.
C) testosterone.
D) thromboxane.
E) thyroxine
Some hormones are A
derived from amino
acids; for example,
catecholamines are
derived from _____ while
NO is derived from
________.
A) tyrosine; arginine
B) tryptophan; lysine
C) tyrosine; histidine
D) tryptophan; arginine
E) histidine; lysine
Terms in this set (700)
Precursors for the A
biosynthesis of the
pyrimidine ring system
include:
A) carbamoyl,
phosphate, and
aspartate.
B) glutamate, NH3, and
CO2.
C) glycine and succinyl-
CoA.
D) glycine, glutamine,
CO2, and aspartate.
E) inosine and aspartate.
Approximately what D
fraction of the human
genome is tranaposable
elements?
A) 1.5%
B) 5%
C) 10%
D) 45%
E) 80%
,If the structure of a fully C
relaxed, closed-circular
DNA molecule is
changed so that the
specific linking difference
(σ) is -0.05, the number
of:
A) bases is decreased by
5%.
B) bases is increased by
5%.
C) helical turns is
decreased by 5%.
D) helical turns is
increased by 5%.
E) helical turns is
unchanged.
A condensed eukaryotic D
chromosome is known to
be associated with all of
the following proteins,
except for:
A) core histones H2A,
H2B, H3, and H4.
B) histone H1.
C) SMC proteins.
D) topoisomerase I.
E) topoisomerase II.
,One distinction between D
peptide and steroid
hormones is that peptide
hormones:
A) act through
nonspecific receptors,
whereas steroid
hormones act through
specific receptors.
B) are generally water-
insoluble, whereas
steroid hormones are
water soluble.
C) are more stable than
steroid hormones.
D) bind to cell surface
receptors, whereas
steroid hormones bind to
nuclear receptors.
E) bind to their receptors
with high affinity, whereas
steroid hormones bind
with low affinity
An example of an D
eicosanoid hormone is:
A) epinephrine.
B) retinoic acid.
C) testosterone.
D) thromboxane.
E) thyroxine
, An example of a steroid C
hormone is:
A) epinephrine.
B) retinoic acid.
C) testosterone.
D) thromboxane.
E) thyroxine
Some hormones are A
derived from amino
acids; for example,
catecholamines are
derived from _____ while
NO is derived from
________.
A) tyrosine; arginine
B) tryptophan; lysine
C) tyrosine; histidine
D) tryptophan; arginine
E) histidine; lysine
