Chapter 8 Bio

Question 1

Interphase Events

Answer 1

G1, S, G2

G1 - cell rapidly grows
S - Chromosomes duplicated
G2 - duplicating things

Question 2

Prophase events

Answer 2

OPPOSITE of Telophase

Chromatin supercoiled by Histones
Nucleus breaks down
Spindle fibers form spindle apparatus
Centrioles move to opposite ends

Question 3

Metaphase events

Answer 3

Chromosomes attach to spindle fibers and line up in the middle of the cell

Question 4

Anaphase events

Answer 4

centromeres break in half and chromatids pulled apart

Question 5

Telophase

Answer 5

chromosomes uncoil
Spindle fibers break down
Two nuclei reform
Cell membrane pinches inward

Question 6

Meiosis I

Answer 6

separates homologous pairs from one another in anaphase I

Question 7

Synapsis

Answer 7

when homologous chromosomes pair up with one another

Question 8

Crossing over

Answer 8

when non-sister chromatids of a homologous pair exchange genes

Question 9

Meiosis II

Answer 9

separates sister chromatids (similar to mitosis) in anaphase II

Question 10

Independent assortment

Answer 10

Metaphase I, chromosome pairs line up randomly in double-file on metaphase plate

Question 11

3 homologous pair traits

Answer 11

same size, shape, and genes in the same position (banding pattern)

Question 12

Kinetochore fibers job

Answer 12

separate chromatids

Question 13

Polar fibers job

Answer 13

overlap and elongate the cell

Question 14

Tumor

Answer 14

abnormal growth of cells

Question 15

Benign tumor

Answer 15

if abnormal cells remain at original site and don’t spread

Question 16

Malignant tumor

Answer 16

moving tumors that spread

Question 17

Metastasis

Answer 17

spread of cancer via circulatory system

Question 18

Sarcoma

Answer 18

tissues that support the body

Question 19

Carcinomas

Answer 19

external or internal coverings

Question 20

Leukemias and lymphomas

Answer 20

blood-forming tissues

Question 21

Slash

Answer 21

surgery

Question 22

Poison

Answer 22

chemo

Question 23

Burn

Answer 23

radiation