5. cell division

Question 1

MTOCs

Answer 1

lay outside nuc. each animal MTOC contains centrioles. plants have CENTROSOMES but no centrioles

Question 2

cell plate

Answer 2

vesicles from Golgi bode fuse to separate plant cells. middle lamella cements cells together

Question 3

cell cycle

Answer 3

division, g1, s, g2

Question 4

g1

Answer 4

cell grows, g1 checkpoint makes sure DNA is ready

Question 5

s phase

Answer 5

DNA replicated giving sister chromatics

Question 6

g2

Answer 6

rapid cell growth.

Question 7

if g1 failed

Answer 7

enters g0

Question 8

g2 checkpoint

Answer 8

adequate Mitosis promoting factor levels to proceed

Question 9

M checkpoint

Answer 9

during metaphase. makes sure mircotubes are attached to kinetochores

Question 10

synapsis

Answer 10

homologs pair up. referred to as tetrats

Question 11

chiasmata

Answer 11

region where corssing over between sisters occurs

Question 12

synaptonemal complex

Answer 12

protein complex with crossing over in sister

Question 13

prophase I

Answer 13

has steps?? skipped this

Question 14

cyclin dependent kinases

Answer 14

enzyme activates proteins that regulate cell cycle by phosphorylation.

Question 15

growth factor

Answer 15

plasma membrane stimulate cell for division (like damaged cell)

Question 16

density dependent inhibition

Answer 16

cells stop dividing when area is full

Question 17

achorage dependent

Answer 17

only divide with external surface

Question 18

cancer cells are

Answer 18

transformed cells

Question 19

cancer drugs inhibit mitosis

Answer 19

by disrupting microtubles