CH.6

Question 1

Know the chromosome anatomy

Question 2

Chromatin

Answer 2

mixed with DNA and protein that form chromosomes

Question 3

Sister chromatids

Answer 3

where the sister chromatids separate becoming separate chromosomes

Question 4

Know the stages of cell cycle

Answer 4

(Gap 1)G1- cell growth and normal functions
(synthesis) S - Copies DNA. chromosomes held at centromere
(Gap 2)G2- additional growth and protein synthesis
(Mitosis) M- includes division of the cell nucleus (mitosis) and division of the cell cytoplasm (cytokinesis)

Question 5

Know the stages of mitosis and what happens in each stage

Answer 5

Prophase
metaphase
Telophase
Anaphase

Question 6

Prophase

Answer 6

1. Chromosomes condense and are more visible.
2. The nuclear membrane (envelope) disappears.
3. Centrioles have separated and taken positions on
   the opposite poles of the cell.
4. Spindle fibers form and radiate toward the center
   of the cell.

Question 7

metaphase

Answer 7

1. Chromosomes line up across the middle of the
   cell.
2. Spindle fibers connect the kinetochore of each
   sister chromatid to the poles of the cell.

Question 8

Anaphase

Answer 8

1. Centromeres that join the sister chromatids split.
2. Sister chromatids separate becoming individual
   chromosomes.
3. Separated chromatids move to opposite poles of
   the cell.

Question 9

Telophase

Answer 9

1. Chromosomes (each consisting of a single
   chromatid) uncoil.
2. A nuclear envelope forms around the
   chromosomes at each pole of the cell.
3. Spindle fibers break down and dissolve.
4. Cytokinesis begins.
   d. Know the outcome of mitosis
   Form two different cells that are identical

Question 10

Know how prokaryotes divide

Answer 10

Binary Fission because of the speed of bacterial cell division