Cell Cycle

Question 1

Cell Cycle

Answer 1

• reproduction of a call
• 3 stages: interphase, mitosis, cytokinesis

Question 2

Mitosis

Answer 2

• the genetic material (DNA) in the nucleus divides
• 4 stages

Question 3

Interphase

Answer 3

FIRST STAGE
- 90% - longest stage
- carries out all life activities
- G1 phase: cell grows and DNA appears as chromatin
- S phase: DNA is replicated
- G2 phase: cell prepares for division by producing organelles and structures

Question 4

Prophase

Answer 4

STAGE 1 M
- DNA condenses -> chromosomes
- nucleolus and nuclear envelope disappear
- spindle fibers form off the centrioles
- centrioles migrate to opposite ends of the cell

Question 5

Metaphase

Answer 5

STAGE 2 M
- chromosomes line up at the metaphase plate (middle)
- spindle fibers attach to the centromeres of chromosomes (mitotic spindle)

Question 6

Anaphase

Answer 6

STAGE 3 M
- centromeres split and sister chromatids separate
- chromosomes move to opposite ends of the cell

Question 7

Telophase

Answer 7

STAGE 4 M
- chromosomes become thinner -> chromatin
- spindle fibers disappear
- nuclear membrane and nucleolus reappear
- nucleus division is complete

Question 8

Cytokinesis

Answer 8

FINAL STAGE
- division of the rest of the cell (cytoplasm, organelles, etc.)
- produces 2 identical daughter cells
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