Cell cycle

Question 1

G1

Answer 1

Cell grows fully

Question 2

S

Answer 2

DNA is copied so new cell can be made

Question 3

G2

Answer 3

• chromosomes bundle
• centrioles move apart
• nuclear membrane thins
• spindle fibers grow

Question 4

prophase

Answer 4

• prepares to divide
• chromatin is gone
• spindle fibers grow
• centrioles separate

Question 5

metaphase

Answer 5

• chromosomes are lined up at the equator
• spindle fibers hold them there

Question 6

anaphase

Answer 6

• fibers shorten
• chromatids separate
• become own chromosome

Question 7

telophase

Answer 7

• two nuclei
• fibers dissolve
• chromosomes reach outside

Question 8

animals

Answer 8

• pinched in
• microfilaments tighten

Question 9

plants

Answer 9

• wall of vesicles made by golgi apparatus filled with cellulose