Transcript Cytoplasm is where all the chemical reactions take

CELLS
1. All living things are made of cells which are
either unicellular eg bacteria and yeast or
multicellular organisms.
2. Microscopes are used to study cells, light
microscopes can magnify about 1500 times and
an electron microscope magnifies 40,000 to
500,000 times.
Complex
organisms like
you are made
up of many
different kinds
of cells.
Animal cells
Cell membrane
holds the cell
together and
controls what
goes in and out of
the cell.
Nucleus controls
what the cell does.
Contains the DNA
(with genes )
Cytoplasm is where
all the chemical
reactions take place.
Plant cells are very
special as they can
trap sunlight and
store the energy as
“plant food”
Plant cell
Cell wall made of
cellulose, gives
support for the cell
Vacuole
Nucleus
controls
what the cell
does.
Contains
the DNA
Cytoplasm is where
all the chemical
reactions take place.
containing cell
sap, a solution
of sugar and
salts.
Cell membrane
Chloroplasts
holds the cell
together and controls
what goes in and out
of the cell
containing
chlorophyll for
photosynthesis
Comparing animal cell and plant cells
Both cells have:-
But only plant
cells have:-
A nucleus
A cell wall
Cytoplasm
A vacuole
Cell
membrane
Chloroplasts
Remember there are lots of different kinds of animal
and plant cells but all of them have the above features
CELLS AND ORGANISMS
• 1. Structures within a cell are called
organelles.
• There is division of labour between cells.
• Similar cells are grouped to form tissues.
• An organ contains tissues working together.
• An organ system contains organs working
together.
Cells
Tissues
Organs
Systems
Organisms
Example
1. Organelles make up nerve cells ( neurons) ,
which make up nervous tissues, which make
up the organs brain and spinal cord, which
make up nervous system.
Organ- Brain
Nervous system
Nervous tissue
Nerve cell