BIO 1050 Exam 3 Practice Questions and Correct Answers
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BIO 1050
(LO 3.5) In the mitotic cell cycle, which of the following would most immediately come after the S phase? mitosis G2 phase the M phase cytokinesis G2 phase
(LO 3.4, 3.5) By definition, the number of types of chromosomes is n. For a given cell, n = 16. How many double helices of DNA are there durin...
BIO 1050 Exam 3 Practice Questions and
Correct Answers
(LO 3.5) In the mitotic cell cycle, which of the following would most immediately come
after the S phase?
mitosis
G2 phase
the M phase
cytokinesis ✅G2 phase
(LO 3.4, 3.5) By definition, the number of types of chromosomes is n. For a given cell, n
= 16. How many double helices of DNA are there during G2 of the mitotic cell cycle?
64
8
32
128 ✅64
(LO 3.5) Of the following, which would happen next after the synthesis of DNA during
the mitotic cell cycle?
mitosis
G2 phase
cytokinesis
G1 phase
M phase ✅G2
(LO 3.7) You are working with environmental contaminants, and have found chemical A
in the water supply. You are concerned it is a growth factor, so you run experiments to
test this hypothesis. You have two sets of identical flasks of cells, set 1 and set 2. You
do not add chemical A to set 1, but you add chemical A to set 2. You wait three days
and measure the number of cells again. The data that would be most convincing that
chemical A is a growth factor would be
the number of cells in set 1 is smaller than the number in set 2 at the end of the
experiment.
the number of cells in set 1 is equal to the number in set 2 at the end of the experiment.
the number of cells in set 1 is larger than the number in set 2 at the end of the
experiment.
the number of cells in set 2 is larger at the end of the experiment than at the beginning.
the number of cells in set 1 is larger at the end of the experiment than at the begi
✅the number of cells in set 1 is smaller than the number in set 2 at the end of the
experiment.
(LO 3.5) When there are mistakes in the replication of DNA during the mitotic cell cycle,
the cell is most likely going to
, eliminate the defective chromosomes from the cell and continue dividing with only the
non-mutated chromosomes.
stop at the M checkpoint.
stop at the G1 checkpoint.
stop at the G2 checkpoint. ✅stop at the G2 checkpoint.
(LO 3.5, 3.16) You would find sister chromatids
during cytokinesis.
during the G1 phase of the cell cycle.
in the cytoplasm of a cell that is not dividing.
during the mitotic cell cycle before DNA replication.
during the G2 phase of the cell cycle. ✅during the G2 phase of the cell cycle.
(LO 3.2, 3.5) Sister chromatids are made during.
G2 phase of the meiotic cell cycle, but not the mitotic cell cycle.
S phase of the mitotic and meiotic cell cycles.
G1 phase of the mitotic and meiotic cell cycles.
telophase the mitosis, but not of meiosis.
anaphase of mitosis and meiosis ✅S phase of the mitotic and meiotic cell cycles.
(LO 3.4) One sister chromatid has
two molecules of DNA as one double helix.
up to two different alleles for each gene.
two double helices of DNA.
one molecule of DNA (half of a double helix).
a double helix of DNA that is identical to a non-sister chromatid of the homologous
chromosome. ✅two molecules of DNA as one double helix.
(LO 3.1) Binary fission
is how eukaryotes make more cells.
is how multicellular organisms end up with two arms, one on each side of the body.
is how multicellular organisms repair wounds.
usually has the cell wall and plasma membrane separate the cell in two before the
duplicated chromosomes separate.
results in two daughter cells, each with one copy of the circular chromosome. ✅results
in two daughter cells, each with one copy of the circular chromosome.
(LO 3.2) Sister chromatids
have centromeres in different locations.
have different alleles.
have different genes.
have the same lengths.
have the same genes, but in different orders from each other. ✅have the same
lengths.
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