Cell Cycle and Mitosis

Cytokinesis usually, but not always, follows mitosis. If a cell completed mitosis but not cytokinesis, what would be the result?

• A cell with a single large nucleus

• A cell with high concentrations of actin and myosin

• A cell with two abnormally small nuclei

• A cell with two nuclei

• A cell with two nuclei but with half the amount of DNA

Regarding mitosis and cytokinesis, one difference between higher plants and animals is that in plants

• The spindles contain microfibers in addition spindles do not contain microfibers

• Sister chromatids are identical, but they differ from one another in animals

• A cell plate begins to form at telophase, whereas in animals a cleavage furrow in initiated at that stage

• Chromosomes become attached to the spindle at prophase, whereas in animals chromosomes do not become attached until anaphase

• Spindle poles contain centrioles, whereas spindle poles in animals do not

All of the following occur during prophase of mitosis in animal cells except

• The centrioles move toward opposite poles

• The nucleolus can no longer be seen

• The nuclear envelope disappears

• Chromosomes are duplicated

• The spindles is organized

Which of the following organisms does not reproduce cells by mitosis and cytokinesis

• Cow

• Bacterium

• Mushroom

• Cockroach

• Banana Tree

Where do the microtubules of the spindle originate during mitosis in both plant and animal cells?

• Centomere

• Centrosome

• Centriole

• Chromatid

• Kinetochore

Measurement of the amount of DNA per nucleus were taken on a large number of cells from growing fungus. the measured DNA levels ranged from 3 to 6 picograms per nucleus. In which stage of the cell cycle was the nucleus with 6 picograms of DNA?

• G0

• G1

• S

• G2

A plant cell has 12 chromosomes at the end of mitosis. How many chromosomes would it have in prophase of its next cycle?

• 6

• 9

• 12

• 24

• It depends on whether it is undergoing mitosis or meiosis

Which of the following sequences correctly describes the cell cycle?

• ->G1->G2->S->Prophase->Metaphase->Anaphase->Telophase->

• ->S->G2->Prophase->Metaphase->Anaphase->Telophase->G1->

• ->G1->S->G2->Metaphase->Prophase->Anaphase->Telophase->

• ->G1->S->G2->Prophase->Anaphase->Metaphase->Telophase->

All of the following are characteristics of telophase of mitosis, except

• Cytokinesis begins

• Each chromosome is made of two chromatids

• The nuclear membrane reappears

• Chromosomes begin to uncoil

• Microtubuales disappear

What phase of mitosis is in this image

• Prophase

• Metaphase

• Anaphase

• Telophase