Bio 201 Exam 3 Study Guide ACTUAL
UPDATED Exam Questions and
CORRECT Answers
Mitosis - CORRECT ANSWER - cell division in which the nucleus divides into nuclei
containing the same number of chromosomes
Cytogenetics - CORRECT ANSWER - The field of genetics that involves the microscopic
examination of chromosomes
sister chromatids - CORRECT ANSWER - The two duplicated chromatids that are still
joined to each other after DNA replication
The Cell Cycle - CORRECT ANSWER - series of events in which a cell grows, prepares
for division, and divides to form two daughter cells
stages of the cell cycle - CORRECT ANSWER - G1, S, G2, mitosis, cytokinesis
What parts of the cell cycle make up interphase? - CORRECT ANSWER - G1, S, G2
in multicellular eukaryotes, mitosis is required for: - CORRECT ANSWER --
development from a single fertilized egg (zygote)
- growth
- tissue regeneration and repair
stages of mitosis - CORRECT ANSWER - prophase, prometaphase, metaphase, anaphase,
telophase
, mitosis splits __________ _______________ equally into daughter cells - CORRECT
ANSWER - replicated chromosomes
What happens during the S phase of the cell cycle? - CORRECT ANSWER - (also known
as DNA synthesis) the chromosomes replicate and become a pair of sister chromatids
What happens during G1 of the cell cycle? - CORRECT ANSWER - cell growth and
preparation for division
What happens during the G2 phase of the cell cycle? - CORRECT ANSWER - a cell
synthesizes the proteins necessary for chromosome sorting and cell division. Some cell growth
may occur
What happens during the M phase of the cell cycle? - CORRECT ANSWER - Mitosis,
which is the division of one cell nucleus into two nuclei; and cytokinesis, which is the division of
the cytoplasm to produce two distinct daughter cells
for fast diving mammalian cells in adults, such as skin cells, the length of the cell cycle is often
in the range of : - CORRECT ANSWER - 10 to 24 hours
what factors determine whether or not a cell will divide? - CORRECT ANSWER -
External: environment and signaling molecules
Internal: cell cycle control molecules and checkpoints
What does the G1 checkpoint check for? - CORRECT ANSWER - cell size, nutrients,
growth factors, DNA damage
What does the G2 checkpoint check for? - CORRECT ANSWER - DNA damage, DNA
replication completion, monitors levels of proteins needed for M phase
UPDATED Exam Questions and
CORRECT Answers
Mitosis - CORRECT ANSWER - cell division in which the nucleus divides into nuclei
containing the same number of chromosomes
Cytogenetics - CORRECT ANSWER - The field of genetics that involves the microscopic
examination of chromosomes
sister chromatids - CORRECT ANSWER - The two duplicated chromatids that are still
joined to each other after DNA replication
The Cell Cycle - CORRECT ANSWER - series of events in which a cell grows, prepares
for division, and divides to form two daughter cells
stages of the cell cycle - CORRECT ANSWER - G1, S, G2, mitosis, cytokinesis
What parts of the cell cycle make up interphase? - CORRECT ANSWER - G1, S, G2
in multicellular eukaryotes, mitosis is required for: - CORRECT ANSWER --
development from a single fertilized egg (zygote)
- growth
- tissue regeneration and repair
stages of mitosis - CORRECT ANSWER - prophase, prometaphase, metaphase, anaphase,
telophase
, mitosis splits __________ _______________ equally into daughter cells - CORRECT
ANSWER - replicated chromosomes
What happens during the S phase of the cell cycle? - CORRECT ANSWER - (also known
as DNA synthesis) the chromosomes replicate and become a pair of sister chromatids
What happens during G1 of the cell cycle? - CORRECT ANSWER - cell growth and
preparation for division
What happens during the G2 phase of the cell cycle? - CORRECT ANSWER - a cell
synthesizes the proteins necessary for chromosome sorting and cell division. Some cell growth
may occur
What happens during the M phase of the cell cycle? - CORRECT ANSWER - Mitosis,
which is the division of one cell nucleus into two nuclei; and cytokinesis, which is the division of
the cytoplasm to produce two distinct daughter cells
for fast diving mammalian cells in adults, such as skin cells, the length of the cell cycle is often
in the range of : - CORRECT ANSWER - 10 to 24 hours
what factors determine whether or not a cell will divide? - CORRECT ANSWER -
External: environment and signaling molecules
Internal: cell cycle control molecules and checkpoints
What does the G1 checkpoint check for? - CORRECT ANSWER - cell size, nutrients,
growth factors, DNA damage
What does the G2 checkpoint check for? - CORRECT ANSWER - DNA damage, DNA
replication completion, monitors levels of proteins needed for M phase
