Question

reading tool sequence of events in the cell - cycle diagram below, each section represents the relative time the cell spends in each stage. in the following diagram, write in each of the following phases: a. interphase b. g₁ phase c. s d. g₂ e. m phase f. mitosis g. cytokinesis h. cell division 2. 3. label the diagram above with the four stages of mitosis. in the margin, list each phase and describe what happens during that stage.

Explanation:

Interphase is the longest - lasting part of the cell cycle where the cell grows and replicates DNA. The $G_1$ phase is the first growth phase where the cell synthesizes proteins and organelles. The S phase is for DNA synthesis and replication. The $G_2$ phase is the second growth phase preparing for mitosis. The M phase includes mitosis and cytokinesis. Mitosis has four stages: prophase (chromatin condenses, nuclear envelope breaks down), metaphase (chromosomes line up at the equator), anaphase (sister chromatids separate), and telophase (nuclear envelopes reform, chromosomes de - condense). Cytokinesis is the division of the cytoplasm to form two daughter cells.

Answer:

a. Interphase: The cell grows, replicates DNA, and prepares for cell division.
b. $G_1$ phase: The cell grows and synthesizes proteins and organelles.
c. S phase: DNA replication occurs.
d. $G_2$ phase: The cell continues to grow and prepares for mitosis.
e. M phase: Includes mitosis and cytokinesis, the cell divides.
f. Mitosis: Consists of prophase, metaphase, anaphase, and telophase for nuclear division.
g. Cytokinesis: Division of the cytoplasm to form two daughter cells.
h. Cell division: The overall process of producing two daughter cells from one parent cell.
Prophase: Chromatin condenses into chromosomes, nuclear envelope breaks down, spindle fibers form.
Metaphase: Chromosomes line up at the cell's equatorial plate.
Anaphase: Sister chromatids separate and are pulled to opposite poles by spindle fibers.
Telophase: Nuclear envelopes reform around the separated chromosomes, chromosomes de - condense.