CH 12

Question 0

Prokaryotes divide by binary vision

Answer 0

just a statement

Question 1

Cell division functions in growth, replacement , repair and Asexual reproduction

Answer 1

just a statement

Question 2

The Genome of Eukaryotes is organized into multiple chromosomes.

Answer 2

Just a statemenmt

Question 3

The cell cycle: Mitosis alternates with interphase

Answer 3

Just a statement

Question 4

Cytokinesis divides the cytoplasm

Answer 4

just a statement

Question 5

Mitosis (Eukaryotes) may have evolved from binary vision

Answer 5

just a statement

Question 6

A molecular control system drives the cell cycle

Answer 6

Just a statement

Question 7

External and internal cues help regulate cell division

Answer 7

just a statement

Question 8

Cancer cells escape controls on cell division

Answer 8

just a statement

Question 9

define Genome

Answer 9

A cells endowment of DNA. its genetic info

Question 10

Define Chromatin

Answer 10

Together , the entire complex of DNA and proteins tht is the building material of chromosomes

Question 11

Define somatic cells

Answer 11

All body cells except the reproductive cells

Question 12

Define Gametes

Answer 12

Reproductive cells, eggs and sperm

Question 13

Define sister chromatids

Answer 13

Joined copies of the original chromosomes .

Question 14

Define centromere

Answer 14

a region of the chromosomal DNA where the chromatid is attached ,ost closest to its sister chromatid

Question 15

Define Mitosis

Answer 15

The division of the genetic material in the nucleus .

Question 16

Define Cytokinesis

Answer 16

The division of the cytoplasm

Question 17

Define spindle

Answer 17

Consists of fibers made of microtubules and associated proteins

Question 18

What are the five stages of Mitosis

Answer 18

Interphase - G1, S , G2
Prophase 
Prometaphase
metaphase
anaphase
telophase/ cytokinesis

Question 19

At what specific phase is the DNA condensed, diffused, and replicated?

Answer 19

G1 - chromosomes or DNA are diffused
S - Chromosomes or DNA are replicated
G2 - Chromosomes are condensed

Question 20

The process of mitosis

Answer 20

Interphase
G1- No change in DNA
S - DNA Replicated
G2 - Centromeres replicated
Prophase - Chromosomes move apart and spindle forms
Prometaphase - Nuclear envelope breaks down. spindles still form, microtubules attach to chr. through kinetochore. Chr begin to line up.
Metaphase - All chr are lined up at the metaphase plate between the 2 spindle poles as the spindle still forming.
Anaphase - Chr break from the metaphase plate, split one to each end, spindle still forming
Telophase - Chr to chromatin, reform nuclear env., spindle breaking down
Cytokinesis - Break down rest of cell, actin filaments pinch cytoplasm, cleavage furrow pinches the cell of into 2 cells (like a belt )