Download Specialised Cells

Specialised Cells Lesson 1
1. Identify one similarity and one difference in the
structure of plant and animal cells:
Similarity:
__________________________________________
__________________________________________
Difference:
__________________________________________
__________________________________________
2 marks
[Total 2 marks]
Specialised Cells
Learning outcomes
• Be able to name some specialised
cells
• Describe the jobs of some
specialised cells
• Describe how specialised cells are
adapted for their jobs
On MWB name the cell
Specialised Cells
• Plants and animals are multicellular (consist of
many cells).
• They contain many different types of cells.
• Each type of cell is designed to carry out a
particular job or function.
• This is known as CELL SPECIALISM
• Not all cells look the same.
• Some cells have a special shape and features to
help them do a certain job.
Sperm cell
Head nucleus
Designed to Fertilise
eggs.
Found in the Testes
Tail
A sperm is small and has
a long tail that provides
movement so it can swim
and find an egg cell.
The head contains
enzymes which allow it to
digest into an egg cell and
join with it.
Egg (Ovum) Cell
• Designed to be Fertilised.
Cytoplasm containing yolk
• Found in the Ovaries.
• An egg cell is large and
bulky.
Layer of jelly
Nucleus
• Contains yolk which
provides a large food store
for the new cell being
formed.
Palisade Cell
• Designed for Photosynthesis
Nucleus
• Found in the top of a leaf
• Tall and has a large surface
area to absorb water and
minerals.
• Packed with chloroplasts to
help make plant food.
Chloroplasts
Root Hair Cell
• Designed for
absorbing.
Vacuole
•Thin cell wall
makes it easy for
minerals to pass
through.
thin cell wall
•Has a large
surface which
helps it to
absorb water
and minerals.
Cell membrane
•Found in a plant root.
Nerve Cell (neurone)
Nucleus
•They are long
•They have connections at each end
•Can carry electrical signals
•Their job is to carry nerve impulses to different parts
of the body.
Red Blood Cell
•Designed to carry oxygen
•Found in blood.
•Large surface area, for oxygen to pass through.
•Contains haemoglobin, which joins with oxygen.
•Has no nucleus
Model Cell
1. Decide which cell you know the least about.
2. Make a model cell using coloured paper.
3. Make sure you add as many labels as
possible.
Peer assessment
1. Look at the model cell of the person next to
you.
– Have they included the job of the cell?
– Have they included the adaptations of the cell?
2. Write them a www and an ebi