CELL PROCESSES
Warmup
What are some processes cell have to do?
What makes something alive
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Cellular organization
Similar life chemicals
Use energy
Grow and develop
Respond to surroundings
Reproduce.
4 needs
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Energy
Stable internal conditions/homeostasis
Living Space
Water
Cell Theory
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All cells come from cells
Cells are basic unit of structure and function
All living things are composed of cells.
Cell Processes
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The functions of cells
The chemical processes that run cells
Cell Cycle
 Mitosis
 Cytokinesis
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Diffusion
Osmosis
Photosynthesis
Respiration
Cell Theory
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All cells come from other cells.
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New Skin cells come from skin cells
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All special cells originally come from
stem cells that came from egg cells
that came from our parent cells.
Babies are made from cells from
parents!
Cell cycle
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The process of cells making new cells.
split a cell in two.
Important process
 Allows
growth
 Development
 Reproduction
Discussion
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What needs to happen for a cell to split in two.
Does it become two half cells?
What does each cell need?
Cell Cycle
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The process of a cell copying itself and then
splitting is called the cell cycle.
Three parts
 Interphase:
Growing getting ready for mitosis
 Mitosis : copying the nucleus
 Cytokinesis : Splitting in half
Mitosis
PMAT
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Mom mitosis peed on the mat again!!
P: Prophase
M: Metaphase
A: Anaphase
T:Telophase
Cell Cycle
1. Interphase
2a. Mitosis: Prophase
3. Cytokinesis
2b. Mitosis:
Metaphase
2c. Mitosis: Anaphase
2d. Mitosis: Telophase
Cell Cycle
1. Interphase
2a. Mitosis: Prophase
3. Cytokinesis
2b. Mitosis:
Metaphase
2c. Mitosis: Anaphase
2d. Mitosis: Telophase
Cell Cycle
Cell Cycle
Cell grows, makes a
copy of its DNA, and
prepares to divide.
The cell membrane pinches in around
the middle of the cell, and the cell
divides.
Chromatin condenses to form chromosomes,
spindle fibers form, and the nuclear membrane
breaks down.
New nuclear membranes
form.
Chromosomes line up in
the middle of cell.
The chromatids
separate and move to
opposite ends of the
cell.
Cell Cycle
Cell grows, makes a
copy of its DNA, and
prepares to divide.
The cell membrane pinches in around
the middle of the cell, and the cell
divides.
Chromatin condenses to form chromosomes,
spindle fibers form, and the nuclear membrane
breaks down.
New nuclear membranes
form.
Chromosomes line up in
the middle of cell.
The chromatids
separate and move to
opposite ends of the
cell.
Cell Cycle
Cell grows, makes a
copy of its DNA, and
prepares to divide.
The cell membrane pinches in around
the middle of the cell, and the cell
divides.
Chromatin condenses to form chromosomes,
spindle fibers form, and the nuclear membrane
breaks down.
New nuclear membranes
form.
Chromosomes line up in
the middle of cell.
The chromatids
separate and move to
opposite ends of the
cell.
Cell Cycle
Cell grows, makes a
copy of its DNA, and
prepares to divide.
The cell membrane pinches in around
the middle of the cell, and the cell
divides.
Chromatin condenses to form chromosomes,
spindle fibers form, and the nuclear membrane
breaks down.
New nuclear membranes
form.
Chromosomes line up in
the middle of cell.
The chromatids
separate and move to
opposite ends of the
cell.
Cell Cycle
Cell grows, makes a
copy of its DNA, and
prepares to divide.
The cell membrane pinches in around
the middle of the cell, and the cell
divides.
Chromatin condenses to form chromosomes,
spindle fibers form, and the nuclear membrane
breaks down.
New nuclear membranes
form.
Chromosomes line up in
the middle of cell.
The chromatids
separate and move to
opposite ends of the
cell.
Cell Cycle
Cell grows, makes a
copy of its DNA, and
prepares to divide.
The cell membrane pinches in around
the middle of the cell, and the cell
divides.
Chromatin condenses to form chromosomes,
spindle fibers form, and the nuclear membrane
breaks down.
New nuclear membranes
form.
Chromosomes line up in
the middle of cell.
The chromatids
separate and move to
opposite ends of the
cell.
Interphase----In between phase
Cell grows, makes a copy of its DNA, and
prepares to divide.
Prophase
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1st step
Chromatin condenses to form chromosomes,
spindle fibers form, and the nuclear membrane
breaks down.
Metaphase
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Second step
Chromosomes line up in the middle of cell.
Anaphase
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Third step
The chromatids separate and move to opposite
ends of the cell.
Telephase
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4th step
New nuclear membranes form.
Cytokinesis
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Time to split!!
The cell membrane pinches in around the middle
of the cell, and the cell divides.
Review
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What happens during prophase
What happens during metaphase
What happens during anaphase
What happens during telophase
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Get out cell cycle review sheet.
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Posters
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Create a poster showing all the steps of the cell
cycle.