Cells
Lesson Objectives
• Describe what a cell is (L4/L5)
•Label the parts of a cell (L4)
• Know the difference between a plant
cell and an animal cell (L4)
•Explain the function of the cell
structures (L5)
Starter
Blind drawing game
• Teams of 3
•Number players 1-3
What
is
a
cell?
What is a cell?
A cell is the very smallest unit of living
matter.
All living things, including plants and
animals, are made up of cells.
What is a cell?
What is a cell?
There are many different kinds of
cells, doing many different jobs in a
plant or animal.
Animal
Cells
Animal and plant cells
Cell surface membrane
Cytoplasm
Nucleus
Cell Surface
Membrane
Cell membrane
This surrounds the cell and holds the cell together.
It also controls what chemicals can enter and leave
the cell.
Nucleus
Cell membrane
The nucleus controls the cell. Inside the nucleus is
DNA which contains genetic information.
Cytoplasm
Cell membrane
Cytoplasm is a jelly-like mixture of chemicals
where most of the work of the cell takes place
Parts
of
a
Plant
Cell
Plant cell parts
Plant cells may contain some extra parts.
Cell surface
membrane
Cytoplasm
Nucleus
Chloroplasts
Chloroplasts (plant cells)
Chloroplasts are disc shaped and contain
chlorophyll (green pigment) for photosynthesis.
Chloroplasts
Cell
Wall
Chloroplasts (plant cells)
A cell wall which is a strong outer layer to support
the cell and give it shape.
Cell Wall
Vacuole
Chloroplasts (plant cells)
A vacuole where the plant cell stores sap (the
food that it has made; a mixture of sugars, salts
and water).
Vacuole
Copy!
Cell wall
a strong outer layer to
A PLANT CELL
Plant cells may contain some extrasupport
parts. the cell and
give it shape
Chloroplasts
contain
Cell surface
chlorophyll
membrane
(green pigment)
Vacuole
used for
where the plant cell
photosynthesis
stores sap
Cytoplasm
Nucleus
Draw a line to match the parts of the cell to the correct cell. Some
parts are in both animal and plant cells!
Chloroplasts – green bits
which contain chlorophyll
for photosynthesis.
Cytoplasm – where the
chemical reactions that go
on in the cell happen.
Cell membrane – lets
substances such as
dissolved gasses in and out
of the cell.
Vacuole – A space inside
the cell filled with a
watery liquid. This helps
the cell to keep its shape.
Animal cell
Cell wall – a tough,
supporting wall made from
cellulose. It’s like a
cardboard box surrounding
the cell. It helps the cell
keep its shape.
Nucleus– acts like the
brain of the cell. Where all
the information is held.
Plant cell
Homework project
• Create a model of an animal cell or a
plant cell
• Use the level ladder to help you get
the best level possible
Model cells
Interesting
Cell
Facts
Interesting cell facts:
Like all living things, cells die. If you watched a clock
for one minute, about three billion cells in your body
die.
x 3000000000
Interesting
Cell
Facts
Interesting cell facts:
In that same minute, about three billion
cells divided so that all the cells that
died were replaced.
x 3000000000
Interesting
Cell
Facts
Interesting cell facts:
Dead skin cells
flake off and
dead cells from
internal organs
will pass through
and out of the
body with waste
products.
Interesting
Cell
Facts
Interesting cell facts:
The length of time cells live can vary.
White blood cells
13 days
Red Blood Cells Liver cells
18 months
120 days
Nerve Cells
100 years