Question

mitosis worksheet & diagram identification
label the parts of the cell cycle diagram and briefly describe what is happening:
a
b
c
d
e
f
g
h
i
j

Explanation:

The cell cycle consists of different phases. In the diagram, each labeled part (A - J) corresponds to a specific phase of the cell cycle.

• A: Mitosis. During this phase, the cell divides its nucleus and cytoplasm to form two daughter cells.
• B: G1 phase. The cell grows in size, synthesizes proteins and organelles.
• C: S phase (DNA synthesis). The cell replicates its DNA.
• D: G2 phase. The cell continues to grow and prepares for mitosis.
• E - J: These are sub - phases of mitosis.
• E: Prophase. Chromosomes condense, nuclear envelope breaks down.
• F: Prometaphase. Spindle fibers attach to chromosomes.
• G: Metaphase. Chromosomes align at the cell's equator.
• H: Anaphase. Sister chromatids separate and move to opposite poles.
• I: Telophase. Nuclear envelopes reform around the separated chromosomes.
• J: Cytokinesis. The cell physically divides into two daughter cells.

Answer:

A. Mitosis - cell divides to form two daughter cells.
B. G1 - cell growth, protein and organelle synthesis.
C. S - DNA replication.
D. G2 - further growth and mitosis preparation.
E. Prophase - chromosome condensation, nuclear envelope breakdown.
F. Prometaphase - spindle - chromosome attachment.
G. Metaphase - chromosome alignment at equator.
H. Anaphase - sister chromatid separation.
I. Telophase - nuclear envelope re - formation.
J. Cytokinesis - physical cell division.