Notes-Cell Division.pdf

What is Cell Division
•The process of one cell dividing into
two daughter cells is called cell
division. Each daughter cell has an
exact copy of the DNA found in the
parent cell.
‣Most of the cells in your body
reproduce by dividing this way.

How is Chromatin similar and
different to chromosomes
•Chromatin is an uncoiled mass of
DNA and proteins.
•A chromosome is chromatin that is
coiled up.

What are the three
stages of the Cell Cycle
The Cell Cycle
•The Cell Cycle is composed of the
three stages:
interphase, mitosis, and cytokinesis.

What are the three
stages of the Cell Cycle
1. Interphase – the stage that
occurs in between cell divisions.
a. During interphase the cell
grows, makes a copy of it’s DNA
and prepares to divide into two
cells.

What Happens in each
stage of Mitosis
2. Mitosis – the process in cell division
where the nucleus divides into two
nuclei, each with an identical set of
chromosomes.
a. Mitosis is divided into four phases.
i. Prophase – Chromatin condenses into
chromosomes, nuclear membrane
disappears.
ii. Metaphase – Chromosomes line up across
center of cell, spindle fibers attach to
chromosomes.
iii. Anaphase – Chromosomes split, each half
is pulled to opposite side of cell.
iv. Telophase – Cell becomes stretched out as
opposite ends pull apart. Nuclear membrane
begins to form.

What is the end result
of Cytokinesis
3. Cytokinesis – the shortest stage of
the cell cycle. The cytoplasm and its
organelles divide into two daughter
cells. The two cells have identical
sets of chromosomes.
a. Cytokinesis in plant cells is different
because a cell plate forms between the
two new daughter cells.