BIOCHEM ACS STUDY GUIDE / COMPREHENSIVE PRACTICE Q-BANK /
NEWEST ACTUAL QUESTIONS & ANSWERS (A+ GUIDE SOLUTION)
Terms in this set (129)
Each of the following B
subcellular structures
contains DNA EXCEPT
A. the nucleus.
B. ribosomes.
C. chloroplasts.
D. mitochondria.
In plant and animal cells, C
the three-dimensional
integrity of the cell is
maintained, in part, by an
internal network of
filaments called A. the cell
wall.
B. the Golgi
apparatus.
C. the
cytoskeleton.D. the
endoplasmic reticulum.
Of the following, which are B
prokaryotes?
A. viruses
B. bacteria
C. yeast
D. plant cells
,G° for the conversion of B
glycerol-3-phosphate to
glycerol + Pi is -2.2 kcal/mole.
Thus, you can conclude that
A. this reaction will
occurspontaneously.
B. this reaction may or
maynot occur spontaneously,
depending on the actual
concentrations of reactants
and products.
C. this reaction will
onlyoccur spontaneously if it
is coupled to another
reaction that has a more
favorable G°. D. this reaction
is so strongly favorable that it
could be coupled to drive an
otherwise unfavorable cell
reaction.
In most biochemical A
reactions, ∆PV is
A. negligible
B. positive
C. negative
D. dependent on ∆E
,According to the Second A
Law of Thermodymnamics,
A. the total entropy change
in any reaction that occurs
spontaneously must be
greater than 0. B. the total
entropy change in any
reaction that occurs
spontaneously must be less
than 0.
C. the total entropy of the
universe remains constant.
D. the total entropy of the
universe is always
decreasing.
C
Which of the following is
true?
A. Liquid and solid
waterhave the same number
of hydrogen bonds per
molecule of water
B. Liquid water has
morehydrogen bonds per
molecule than does solid
water
C. Solid water has
morehydrogen bonds per
molecule than does liquid
water
D. Hydrogen bonding is
amajor factor in the structure
of gaseous water
E. None is true
, What is the pH of an aqueous D
solution that has a [OH-] of
3.45 x 10-5 M?
A. 3.47
B. 4.47
C. 5.53
D. 9.54
E. none of the above
D
A peptide was found to have a
molecular mass of about 650
and upon hydrolysis produced
Ala, Cys, Lys, Phe, and Val in a
1:1:1:1:1 ratio. The peptide
upon treatment with
Sanger's reagent produced
DNP-Cys and exposure to
carboxypeptidase produced
valine. Chymotrypsin
treatment of the peptide
produced a dipeptide that
contained sulfur and has a
UV absorbance, and a
tripeptide. Exposure of the
peptide to trypsin produced a
dipeptide and a tripeptide.
Deduce the sequence of the
peptide. A. Val-Ala-Lys-Phe-
Cys
B. Cys-Lys-Phe-Ala-Val
C. Cys-Ala-Lys-Phe-Val
D. Cys-Phe-Lys-Ala-Val
E. Val-Phe-Lys-Ala-Cys
NEWEST ACTUAL QUESTIONS & ANSWERS (A+ GUIDE SOLUTION)
Terms in this set (129)
Each of the following B
subcellular structures
contains DNA EXCEPT
A. the nucleus.
B. ribosomes.
C. chloroplasts.
D. mitochondria.
In plant and animal cells, C
the three-dimensional
integrity of the cell is
maintained, in part, by an
internal network of
filaments called A. the cell
wall.
B. the Golgi
apparatus.
C. the
cytoskeleton.D. the
endoplasmic reticulum.
Of the following, which are B
prokaryotes?
A. viruses
B. bacteria
C. yeast
D. plant cells
,G° for the conversion of B
glycerol-3-phosphate to
glycerol + Pi is -2.2 kcal/mole.
Thus, you can conclude that
A. this reaction will
occurspontaneously.
B. this reaction may or
maynot occur spontaneously,
depending on the actual
concentrations of reactants
and products.
C. this reaction will
onlyoccur spontaneously if it
is coupled to another
reaction that has a more
favorable G°. D. this reaction
is so strongly favorable that it
could be coupled to drive an
otherwise unfavorable cell
reaction.
In most biochemical A
reactions, ∆PV is
A. negligible
B. positive
C. negative
D. dependent on ∆E
,According to the Second A
Law of Thermodymnamics,
A. the total entropy change
in any reaction that occurs
spontaneously must be
greater than 0. B. the total
entropy change in any
reaction that occurs
spontaneously must be less
than 0.
C. the total entropy of the
universe remains constant.
D. the total entropy of the
universe is always
decreasing.
C
Which of the following is
true?
A. Liquid and solid
waterhave the same number
of hydrogen bonds per
molecule of water
B. Liquid water has
morehydrogen bonds per
molecule than does solid
water
C. Solid water has
morehydrogen bonds per
molecule than does liquid
water
D. Hydrogen bonding is
amajor factor in the structure
of gaseous water
E. None is true
, What is the pH of an aqueous D
solution that has a [OH-] of
3.45 x 10-5 M?
A. 3.47
B. 4.47
C. 5.53
D. 9.54
E. none of the above
D
A peptide was found to have a
molecular mass of about 650
and upon hydrolysis produced
Ala, Cys, Lys, Phe, and Val in a
1:1:1:1:1 ratio. The peptide
upon treatment with
Sanger's reagent produced
DNP-Cys and exposure to
carboxypeptidase produced
valine. Chymotrypsin
treatment of the peptide
produced a dipeptide that
contained sulfur and has a
UV absorbance, and a
tripeptide. Exposure of the
peptide to trypsin produced a
dipeptide and a tripeptide.
Deduce the sequence of the
peptide. A. Val-Ala-Lys-Phe-
Cys
B. Cys-Lys-Phe-Ala-Val
C. Cys-Ala-Lys-Phe-Val
D. Cys-Phe-Lys-Ala-Val
E. Val-Phe-Lys-Ala-Cys
