Mitosis and Meiosis (Exam 3)CORRECT 100%

Mitosis and Meiosis (Exam 3)CORRECT
100%
Sort each process into the appropriate bin to indicate the stage of mitosis in which it
occurs. If a process occurs in more than one stage, sort it to the stage when it first
occurs.
Prophase - ANSWER*Cohesions join sister chromatids of duplicated chromosome
*Tubulins assemble into spindle microtubules

Sort each process into the appropriate bin to indicate the stage of mitosis in which it
occurs. If a process occurs in more than one stage, sort it to the stage when it first
occurs.
Prometaphase - ANSWER*Microtubules attach to kinetochores

Sort each process into the appropriate bin to indicate the stage of mitosis in which it
occurs. If a process occurs in more than one stage, sort it to the stage when it first
occurs.
Metaphase - ANSWER*kinetochores are motionless in relation to poles of cell

Sort each process into the appropriate bin to indicate the stage of mitosis in which it
occurs. If a process occurs in more than one stage, sort it to the stage when it first
occurs.
Anaphase - ANSWER*cohesions break down
*kinetochores move toward poles of cell

Sort each process into the appropriate bin to indicate the stage of mitosis in which it
occurs. If a process occurs in more than one stage, sort it to the stage when it first
occurs.
Telophase - ANSWER*spindle microtubules disassemble

During prophase, the microtubules of the mitotic spindle ____. - ANSWERLengthen

During anaphase, the nonkinetochore microtubules ___ and move past each other, and
the kinetochore microtubules ___. - ANSWERlengthen, shorten

During telophase, the nonkinetochore microtubules - ANSWERdisassemble

Phases of the cell cycle - ANSWER1. non-dividing cells exit cell cycle
2. at this point, cell commits to go through the cell cycle
3. DNA replicates
4. centrosome replicates
5. miotic spindle begins to form
6. cell divides, forming 2 daughter cells

, Mechanisms underlying the events of mitosis (prophase) - ANSWER*cohesions join
sister chromatids of duplicated chromosome
*tubulins assemble into spindle microtubules

Mechanisms underlying the events of mitosis (prometaphase) - ANSWER*microtubules
attach to kinetochores

Mechanisms underlying the events of mitosis (metaphase) - ANSWER*kinetochores are
motionless in relation to poles of cell

Mechanisms underlying the events of mitosis (anaphase) - ANSWER*cohesions break
down
*kinetochores move toward poles of cell

Mechanisms underlying the events of mitosis (telophase) - ANSWER*spindle
microtubules disassemble

Roles of the mitotic spindle
1. Will this cell elongate during mitosis?
2. Will the sister chromatids separate from each other?
3.Will the chromosomes move to the poles of the cell? - ANSWER1. yes
2. yes
3. no

Comparing chromosome separation in bacteria and eukaryotes (bacteria only) -
ANSWER*chromosome separation begins at the origin of replication on DNA

Comparing chromosome separation in bacteria and eukaryotes (eukaryotes only) -
ANSWER*before separation, duplicated chromosomes condense
*Nuclear envelope fragments, permitting chromosome separation
*2 copies of the duplicated chromosome are attached at their centomeres before
separation

Comparing chromosome separation in bacteria and eukaryotes (both) -
ANSWER*Chromosomes replicate before cell division
*replicated chromosomes separate by attaching to some other structural feature of the
cell

Cytokinesis in plant cells - ANSWER*vesicles from Golgi apparatus move along
microtubules, coalesce at the plane of cell division, and form a cell plate
*the cell plate consists of the plasma membrane and cell wall that will eventually
separate the 2 daughter cells

Bacteria, Animals, and Plants
1. Cells divide by constriction of a ring of protein
2. The presence of a cell wall prevents the cell from dividing by constriction