Chapter 8- Cell Cycle And Mitosis

Question 1

Nucleus

Answer 1

DNA located here

DNA condensed into chromatin

Further condensed into chromosomes

Chromosomes in pairs- 23 pairs, 46 chr. (Homologous)

Question 2

The Cell Cycle

Answer 2

Way of looking at entire lifespan of a cell

Begins when a cell is produced and ends when it divides

2 phases: interphase and cell division

Question 3

Interphase

Answer 3

Normal state of the cell (growth, metabolism, functions)

G1, Synthesis, G2

Question 4

G1 phase

Answer 4

Growth, high metabolism, protein synthesis

Each chromosome is a single DNA molecule

Question 5

Synthesis phase

Answer 5

All DNA is replicated

Sister chromatids and centromeres

Question 6

G2 phase

Answer 6

Preparatory stage for mitosis

Rapid growth

Question 7

Cell division

Answer 7

Mitosis- division of the nucleus

Followed by

Cytokinesis, division of the cell itself

Question 8

Mitosis

Answer 8

Prophase
Metaphase
Anaphase
Telophase

Question 9

Prophase

Answer 9

Nuclear envelope disappears

Centromeres go to opposite poles, spindles form

Chromosomes condense

Spindles attach to centromeres

Question 10

Metaphase

Answer 10

Chromosomes line up along equator

Question 11

Anaphase

Answer 11

Centromeres of each chromosome divide in half (sister chromatids)

Spindle fibers pull sister chromatids toward poles

Question 12

Telophase

Answer 12

Spindle fibers disappear

Nuclear envelope reforms

Chromosomes condense

Question 13

Cytokinesis

Answer 13

Division of cytoplasm

Two identical daughter cells produced

In animal cells, plasma membrane cleaves

Question 14

Stage where nucleus divides

Answer 14

Mitosis

Question 15

stage that Makes up a major portion of most cells lives

Answer 15

G1

Question 16

Stage in which cytoplasm divides

Answer 16

Cytokinesis

Question 17

Stage in which the cell grows rapidly

Answer 17

G2

Question 18

Stage where two identical nuclei are produced

Answer 18

Mitosis

Question 19

Stage where DNA is replicated

Answer 19

Synthesis

Question 20

Stage where sister chromatids form and become attached at the centromere

Answer 20

Synthesis

Question 21

Stage where cell carries out its routine functions

Answer 21

G1

Question 22

Stage where spindle fibers move sister chromatids

Answer 22

Mitosis