BIL 150 MALLERY EXAM 4 ANSWERS
a new drug, Serostat, blocks the formation of MPF (mitotic promoting factor) in cultured
HeLa cells. which of the following aspects of the reproduction of cells would most likely
be disrupted by Serostat? - ANSWER-phosphorylation of proteins initiating mitosis
a particular cell has twice the amount of DNA as that in the diploid amount for this
species. This particular cell is most likely? - ANSWER-in G2 interphase
the decrease in the amount of MPF activity at the end of mitosis is due to? - ANSWER-
the degradation of cyclin
which of the following statements is most accurate concerning the protein cyclin? -
ANSWER-it binds with a CDK (cyclin dependent kinase) forming active MPF (mitotic
promoting factor)
what stage of mitosis is depicted by the figure "C"? - ANSWER-metaphase
meiosis II is similar to mitosis in that? - ANSWER-sister chromatids separate
when homologous chromosome pairs during meiosis and allow crossover, which of the
following is likely to occur? - ANSWER-two non-sister chromatids exchange chromatid
pieces
independent assortment of chromosomes results in the progeny all having an identical
combination of genetic traits in each of the progeny cells. - ANSWER-false
sexual cell reproduction may be advantageous evolutionarily because? - ANSWER-it
can provide genetic variability in heterogenous environments
Phenylketonuria (PKU) is a recessive human disorder in which an individual cannot
appropriately metabolize the essential amino acid PHE (phenylalanine). Thus an
efficient and effective treatment for PKU turns out to be which of the following? -
ANSWER-regulating the diet of the affected persons to severely limit the uptake of PHE
an obstetrician knows that one of her patients is a pregnant woman, whose fetus is at
risk for a serious genetic disorder that is detectable biochemically in fetal cells. The
obstetrician would most reasonably offer which of the following procedures to her
patient? - ANSWER-amniocentesis
many genes have more than just two differing alleles. Which of the following statements
is true of alleles? - ANSWER-an individual will contain only two of all the possible alleles
for a gene
a new drug, Serostat, blocks the formation of MPF (mitotic promoting factor) in cultured
HeLa cells. which of the following aspects of the reproduction of cells would most likely
be disrupted by Serostat? - ANSWER-phosphorylation of proteins initiating mitosis
a particular cell has twice the amount of DNA as that in the diploid amount for this
species. This particular cell is most likely? - ANSWER-in G2 interphase
the decrease in the amount of MPF activity at the end of mitosis is due to? - ANSWER-
the degradation of cyclin
which of the following statements is most accurate concerning the protein cyclin? -
ANSWER-it binds with a CDK (cyclin dependent kinase) forming active MPF (mitotic
promoting factor)
what stage of mitosis is depicted by the figure "C"? - ANSWER-metaphase
meiosis II is similar to mitosis in that? - ANSWER-sister chromatids separate
when homologous chromosome pairs during meiosis and allow crossover, which of the
following is likely to occur? - ANSWER-two non-sister chromatids exchange chromatid
pieces
independent assortment of chromosomes results in the progeny all having an identical
combination of genetic traits in each of the progeny cells. - ANSWER-false
sexual cell reproduction may be advantageous evolutionarily because? - ANSWER-it
can provide genetic variability in heterogenous environments
Phenylketonuria (PKU) is a recessive human disorder in which an individual cannot
appropriately metabolize the essential amino acid PHE (phenylalanine). Thus an
efficient and effective treatment for PKU turns out to be which of the following? -
ANSWER-regulating the diet of the affected persons to severely limit the uptake of PHE
an obstetrician knows that one of her patients is a pregnant woman, whose fetus is at
risk for a serious genetic disorder that is detectable biochemically in fetal cells. The
obstetrician would most reasonably offer which of the following procedures to her
patient? - ANSWER-amniocentesis
many genes have more than just two differing alleles. Which of the following statements
is true of alleles? - ANSWER-an individual will contain only two of all the possible alleles
for a gene
