Cell Cycle and Mitosis

What is the purpose of mitosis?

• To increase the surface area of a cell
• To allow cells to divide for growth, repair, and renewal
• For increasing genetic variation within a species
• To allow for DNA replication and protein synthesis

Tags

NGSS.HS-LS1-4

Put the following stages of the cell cycle in order: G2, S, G1, M. 

• G1, S, G2, M
• S, G1, G2, M
• G1, M, G2, S
• M, G1, S, G2

What is the longest stage of the cell cycle called?

• Cytokinesis
• M phase
• Interphase
• G1 Phase

Put the following stages of mitosis in order: anaphase, prophase, metaphase, and telophase. 

• prophase, metaphase, telophase, anaphase
• prophase, anaphase, metaphase, telophase
• prophase, metaphase, anaphase, telophase
• prophase, telophase, metaphase, anaphase

Tags

NGSS.HS-LS1-4

The structure labeled A is a(n)_________ used to hold sister chromatids together.

• chromatid

• centriole

• centromere

• chromophere

Tags

NGSS.HS-LS1-4

During anaphase

• DNA lines up in the middle of the cell and DNA attaches to spindle fibers

• centrioles and spindle fibers appear

• Each DNA gets pull to the opposite sides of the cell

• DNA gets copied

Tags

NGSS.HS-LS1-4

During telophase

• DNA lines up in the middle of the cell and DNA attaches to spindle fibers

• centrioles and spindle fibers appear

• Each DNA gets pull to the opposite sides of the cell

• 2 new nuclei form

Tags

NGSS.HS-LS1-4

What happens in prophase of mitosis?

• The chromosomes become visible; nucleus disappear; spindles form

• The chromosomes align in the middle of the cell

• The sister chromatids separate

• The chromosomes uncoil into chromatin; nucleus reappears; spindles disappear

Tags

NGSS.HS-LS1-4

Why is the metaphase important?

• The DNA gets copied and the cell grows and develops

• The DNA lines up so exact copies can be pulled to each side

• The nuclear membrane disappears and the spindle fibers appear

• Two identical daughter cells are formed

Tags

NGSS.HS-LS1-4

The structures labeled B are_________, held together by a centromere.

• sister chromatid

• centriole

• centromere

• chromophere

Tags

NGSS.HS-LS1-4