Download The Cell Cycle and Mitosis: An Intro

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Transcript
The Cell Cycle and
Mitosis: An Intro
SNC2D
The Cell Cycle

Every hour,
approximately 1 billion
of your cells die – but
approximately 1 billion
cells are created in a
process of cell division
called mitosis.
Interphase
The cell prepares for cell
division by growing
(producing new proteins
and organelles) and by
synthesizing copies of
its DNA (the chromatin).
 This stage of the cell
cycle is called
interphase.

Prophase

During the first phase of mitosis, prophase,
the chromatin condenses into chromosomes
and the nuclear structure disintegrates. A
framework called the mitotic spindle forms.
Metaphase

Next the chromosomes line up in the
middle of the cell. This is metaphase.
Anaphase

During anaphase, the chromosomes
separate and are pulled to opposite
ends of the cell.
Telophase and Cytokinesis

In the last stage of mitosis, telophase, the cell
divides the cytoplasm into two portions. The
final separation of the cytoplasm into two
distinct cells is called cytokinesis.
Your Task

Your task will be to identify the structures that
will allow you to identify each phase and then
to observe mitosis in a prepared slide of an
onion root tip.