Lab 8-Cell Division

Question 1

In _________ reproduction, cells divide by the process known as mitosis.

Answer 1

asexual

Question 2

Mitosis produces:

Answer 2

two identical daughter cells from a single parent cell.

Question 3

Mitosis functions to facilitate _________ of an organism and to replace _________ or worn-out cells.

Answer 3

growth; damaged

Question 4

________ is the sexual form of cell division.

Answer 4

Meiosis

Question 5

Meiosis produces:

Answer 5

genetically different daughter cells from a single parent cell.

Question 6

The function of meiosis is to:

Answer 6

create genetic variability among offspring.

Question 7

A cell typically spends ___% of its life in interphase and ___% in the mitotic phase.

Answer 7

90; 10

Question 8

Interphase

Answer 8

no cell division is occurring; all of the DNA in a cell is uncoiled.

Question 9

Mitotic Phase

Answer 9

DNA becomes highly coiled in the form of individual chromosomes.

Question 10

Before a cell can undergo mitosis, it must first:

Answer 10

replicate its DNA during a late stage of interphase.

Question 11

Two identical copies of the DNA

Answer 11

sister chromatids

Question 12

Two sister chromatids are held together by the ________.

Answer 12

centromere

Question 13

The mitotic phase is divided between:

Answer 13

mitosis and cytokinesis

Question 14

_______ divides the nuclear contents of the cell.

Answer 14

Mitosis

Question 15

_______ divides the cytoplasm.

Answer 15

Cytokinesis

Question 16

Four basic stages of mitosis include:

Answer 16

(1) Prophase
(2) Metaphase
(3) Anaphase
(4) Telophase

Question 17

During what phase of mitosis does the nuclear envelope disappear and chromosomes begin to condense, thicken, and attach to spindle fibers?

Answer 17

Prophase

Question 18

During what phase of mitosis do chromosomes line up along the equator?

Answer 18

Metaphase

equator is called metaphase plate

Question 19

During what phase of mitosis do chromosomes split and individual sister chromatids move towards opposite poles?

Answer 19

Anaphase

Question 20

During what phase of mitosis do chromosomes start to decondense? Nuclear envelope also returns during this stage.

Answer 20

Telophase

Question 21

During cytokinesis of a plant cell a _______ forms.

Answer 21

cell wall/plate

Question 22

During cytokinesis of an animal cell a ________ forms.

Answer 22

cleavage furrow