Bio 201-lectures 1-9 UB UPDATED Exam
ACTUAL Questions and CORRECT
Answers
primary - CORRECT ANSWER - Which of the following levels of protein structure is
LEAST likely to be affected by heat
the left - CORRECT ANSWER - On which end of this polypeptide would new amino
acids be added during polymerization?
proline - CORRECT ANSWER - Which of the following amino acids is the only one that
directly alters the structure of the polypeptide backbone?
polar uncharged - CORRECT ANSWER - To what class does the amino acid at right
belong
more unsaturated lipids - CORRECT ANSWER - A species that has evolved to survive at
very low temperatures is likely to have.
H2CO3 - CORRECT ANSWER - Shown above is part of the chemical equilibrium of the
carbonate buffer system. If you had a solution at a pH such that Bicarbonate (HCO3-) was
essentially the only form present, what chemical species would increase in concentration if you
added an acid to it
cellulose,starch,glycogen - CORRECT ANSWER - what is a polymer of glucose?
Its sequence defines the genotype of an organism - CORRECT ANSWER - Which of the
following statements is true for DNA but not RNA?
A. It polymerizes 5' to 3'.
B. One of its monomers is ATP.
,C. It forms base pairs through hydrogen bonding
D. Its sequence defines the genotype of an organism
3' - CORRECT ANSWER - Assuming that the molecule shown above was just added to an
existing polymer, to which carbon on the structure above is the next monomer added during
polymerization
peptidoglycan - CORRECT ANSWER - Which of the following is/are found in bacteria
but not eukaryotes?
A peptidoglycan cell wall
B. mitochondria
C. supercoiled DNA
D. All of the above
all of the above - CORRECT ANSWER - Why is DNA double-stranded?
A. The bases are non-polar.
B. The phosphate groups are polar.
C. The bases hydrogen bond with each other.
D. All of the above
a nucleus - CORRECT ANSWER - Which of the following do eukaryotes have that
bacteria do not?
translation - CORRECT ANSWER - what function does this organelle take process in
golgi complex - CORRECT ANSWER - What organelle is primarily responsible for
protein glycosylation?
smooth ER - CORRECT ANSWER - What organelle is primarily responsible for storing
intracellular calcium (Ca++)?
, High speed (with vesicles) - CORRECT ANSWER - If you used differential centrifugation
to separate organelles, at which speed would you pellet Golgi complex?
proteins - CORRECT ANSWER - The graph at right indicates radioactivity in
secretory vesicles (A), rough ER (B), and Golgi
complex (C). This radioactivity indicates the
location of
The radioactivity in secretory vesicles would eventually decrease - CORRECT
ANSWER - In what single, dramatic way would the appearance of this graph change if a
large amount of calcium (Ca++) were introduced into the cytoplasm?
It would prevent microtubules depolymerization - CORRECT ANSWER - What would
happen if you treated cells with a chemical form of GTP that cannot be hydrolyzed into GDP?
ATP - CORRECT ANSWER - Which of the following is required for actin
polymerization?
D - CORRECT ANSWER - If you purified cytoskeletal proteins and subject them to SDS-
PAGE, which would migrate as a single band?
A. Tubulin
B. Actin
C. Keratin
D. B and C
E. All of the above
f- actin - CORRECT ANSWER - Which cytoskeletal structure(s) is/are polar
homomultimers?
ACTUAL Questions and CORRECT
Answers
primary - CORRECT ANSWER - Which of the following levels of protein structure is
LEAST likely to be affected by heat
the left - CORRECT ANSWER - On which end of this polypeptide would new amino
acids be added during polymerization?
proline - CORRECT ANSWER - Which of the following amino acids is the only one that
directly alters the structure of the polypeptide backbone?
polar uncharged - CORRECT ANSWER - To what class does the amino acid at right
belong
more unsaturated lipids - CORRECT ANSWER - A species that has evolved to survive at
very low temperatures is likely to have.
H2CO3 - CORRECT ANSWER - Shown above is part of the chemical equilibrium of the
carbonate buffer system. If you had a solution at a pH such that Bicarbonate (HCO3-) was
essentially the only form present, what chemical species would increase in concentration if you
added an acid to it
cellulose,starch,glycogen - CORRECT ANSWER - what is a polymer of glucose?
Its sequence defines the genotype of an organism - CORRECT ANSWER - Which of the
following statements is true for DNA but not RNA?
A. It polymerizes 5' to 3'.
B. One of its monomers is ATP.
,C. It forms base pairs through hydrogen bonding
D. Its sequence defines the genotype of an organism
3' - CORRECT ANSWER - Assuming that the molecule shown above was just added to an
existing polymer, to which carbon on the structure above is the next monomer added during
polymerization
peptidoglycan - CORRECT ANSWER - Which of the following is/are found in bacteria
but not eukaryotes?
A peptidoglycan cell wall
B. mitochondria
C. supercoiled DNA
D. All of the above
all of the above - CORRECT ANSWER - Why is DNA double-stranded?
A. The bases are non-polar.
B. The phosphate groups are polar.
C. The bases hydrogen bond with each other.
D. All of the above
a nucleus - CORRECT ANSWER - Which of the following do eukaryotes have that
bacteria do not?
translation - CORRECT ANSWER - what function does this organelle take process in
golgi complex - CORRECT ANSWER - What organelle is primarily responsible for
protein glycosylation?
smooth ER - CORRECT ANSWER - What organelle is primarily responsible for storing
intracellular calcium (Ca++)?
, High speed (with vesicles) - CORRECT ANSWER - If you used differential centrifugation
to separate organelles, at which speed would you pellet Golgi complex?
proteins - CORRECT ANSWER - The graph at right indicates radioactivity in
secretory vesicles (A), rough ER (B), and Golgi
complex (C). This radioactivity indicates the
location of
The radioactivity in secretory vesicles would eventually decrease - CORRECT
ANSWER - In what single, dramatic way would the appearance of this graph change if a
large amount of calcium (Ca++) were introduced into the cytoplasm?
It would prevent microtubules depolymerization - CORRECT ANSWER - What would
happen if you treated cells with a chemical form of GTP that cannot be hydrolyzed into GDP?
ATP - CORRECT ANSWER - Which of the following is required for actin
polymerization?
D - CORRECT ANSWER - If you purified cytoskeletal proteins and subject them to SDS-
PAGE, which would migrate as a single band?
A. Tubulin
B. Actin
C. Keratin
D. B and C
E. All of the above
f- actin - CORRECT ANSWER - Which cytoskeletal structure(s) is/are polar
homomultimers?
