Chapter 10

Question 1

Cell DNA packaged as double stranded DNA molecule

Answer 1

Genome

Question 2

Contains several double stranded DNA molecules

Answer 2

Eukaryotic genome

Question 3

Cell division functions in multicellular and single cellular

Answer 3

Growth, maintenance, repair

Reproduction

Question 4

Chromosome

Answer 4

DNA molecule

Question 5

Homologous chromosome

Answer 5

Contains two of the same chromosomes

Question 6

Somatic cells

Answer 6

Two matched sets of chromosomes

Question 7

Gamete cells

Answer 7

Sex cells

Question 8

Diploid

Answer 8

Two copies of a chromosome

Question 9

Haploid

Answer 9

One copy of a chromosome

Question 10

Karyotype

Answer 10

Collection of chromosomes arranged by size to look for abnormalities

Question 11

Heterologous pairs

Answer 11

Pairs of chromosomes that don’t match

Question 12

Where is variation determined

Answer 12

Parental genes

Question 13

What chromosome is gender determined

Answer 13

23rd chromosome

Question 14

Why is DNA compact

Answer 14

To fit in nucleus

Question 15

Heterochormatin

Answer 15

Packed and sorted chromosomes

Question 16

Euchromatin

Answer 16

Unpacked chromosomes

Question 17

DNA wrapped around a protein forms a what…

Answer 17

Nucleosome

Question 18

When chromosome is duplicated it forms what

Answer 18

A new sister chromosome

Question 19

what is The cell cycle

Answer 19

Ordered series of events in the life of a cell

Question 20

Interphase

Answer 20

Normal growth and preparation of cell division

Question 21

M phase

Answer 21

Replicated DNA , cytoplasm splits , cell divides

Question 22

G1 phase

Answer 22

Cell is active

Question 23

S phase

Answer 23

DNA replication, chromosomes joined at centromere

Question 24

Centrosomes

Answer 24

Mitotic spindles to move chromosomes

Question 25

G2 phase

Answer 25

Energy replenishes , organelles reproduce , cytoskeleton breaks down

Question 26

Karyokinesis

Answer 26

Nucleus divides

Question 27

Cytokinesis

Answer 27

Cytoplasmic components separate

Question 28

Prophase

Answer 28

Membrane organelles disperse, centrosomes migrate to poles, microtubules form, sister chromatids coil tighter

Question 29

Prometaphase

Answer 29

Sister chromatids dev. Kinetiochore, microtubules attach to chromatids

Question 30

Metaphase

Answer 30

Chromosomes line up on metaphase plate , sisters remain attached by proteins

Question 31

Anaphase

Answer 31

Cohesion proteins degenerate sisters move in opposite directions

Question 32

Telophase

Answer 32

Chromosomes unravel , spindles depolymerize and make cytoskeleton components , nuclear envelope forms

Question 33

External cell triggers

Answer 33

Nearby death cells, growth hormone release

Question 34

G1 checkpoint

Answer 34

DNA OK???, enough resources, build enough proteins

Question 35

G2 check

Answer 35

DNA replicated, enough proteins?

Question 36

M check

Answer 36

Spindle fibers formed? Chromosomes oriented and attached

Question 37

Positive regulators

Answer 37

Promote movement to next step

Question 38

Negative regulators

Answer 38

Stop advancement of cycle

Question 39

CDK W NO cyclin

Answer 39

Inactive

Question 40

CDK W cyclin

Answer 40

Active