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Cells as the Basic Unit of Life ( Chapter 9 ) - Coggle Diagram
Cells as the Basic Unit of Life ( Chapter 9 )
The Microscope
We
cannot
see them without a
microscope
:cry:
A microscope uses
lenses
to make objects look
bigger
Cells are very
tiny
Parts of an Animal Cell
An animal cell has
three
parts ; the
cell membrane
, the cytoplasm and the nucleus
Cells parts and their functions
Cell membrane
Controls substances
entering or leaving the cell
. It only allows
some substances to pass through
.
It is flexible and
allows the cell to change shape
Cytoplasm
Allows chemical reaction to take place
Contains water and food materials
Nucleus
Controls all activities in the cell
Contains genes which store information that is
passed on from parents to their children
What determines our traits?
Characteristics
(traits) are passes down from
parents
to their
children
This process is known as
heredity
Bone Cells
A bone cell is a
specialised
cell. It has a
specific
function, that is to make bones that
support our
body
A bone cell, like most animal cells, has a
nucleus
cytoplasm
and cell
membrane
.
Red blood Cells
Blood
is an important
tissue
of our body as it
carries
nutrients
to and
remove waste
materials from cell.
Blood contains different
types of cells
Red blood Cells
transport**
oxygen
from the
lungs
to the
rest of the body **
Red blood Cells
do not
have a nucleus because they need to carry
more oxygen
- only have cell membrane & cytoplasm
They contain a
red pigment
called
haemoglobin
which binds to
oxygen
and carry it around the body
Muscle Cells
The muscle cells is another
specialised cell.
It has a
cell membrane
,
nucleus
and
cytoplasm
.
Muscle cells
contract
and
relax
to help us
move
