1. Cells My name is Okoro the nucleus and I will be one of
your guides during this topic.
Cell size
Cells structure
and function
Quiz

2. Cell structure
and function
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3. Learning objective and outcomes
To learn about plant and animal cells and function
Outcome
At the end of this session, pupils should be able to understand:
cell sizes
cell structure and functions
the differences between plant and animal cells
the importance of microscope in cell view
Learning objective and outcomes
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4. Introduction Cells are the basic functional unit of life. Some of them
exist independently. Two-thirds of a cell is water, which
means that 2/3 of your whole body is water.
The rest is a mixture of molecules, mainly proteins, fats
and carbohydrates.
Your body is constantly replacing old cells with new
ones at the rate of millions per second.
Cells are too small to be seen with the naked eye
without a microscope.
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5. To help you understand their size try putting these
How big are cells?
To help you understand their size try putting these
six objects in order with the largest first.
nucleus
Animal cell
virus
Plant cell
chloroplast
(part of a plant cell)
ant
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6. How big are cells? 1 ant will fit on this pinhead Smallest Largest
Viruses
are even
smaller
even
more
chloroplasts
1 ant will
fit on this
pinhead 60
plant
cells
many
more
nuclei
100
animal
cells
Smallest
Largest
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7. Lets take a microscopic look at one of the cells in
the ant. These are called animal cells.
cell membrane
nucleus
cytoplasm
Hundreds of animal cells with irregular
shapes. Lets take a look at just one animal cell.
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8. Lets take a closer look at one of the cells in the leaf.
These are called plant cells.
cell wall
cell membrane
vacuole
nucleus
chloroplast
cytoplasm
Hundreds of plant cells with regular shapes.
Lets take a look at just one plant cell.
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9. Copy and complete these cells cell membrane chloroplast 4 1
nucleus 2
cell
wall 5
cytoplasm 3
vacuole 6
Animal cell
Plant cell
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10. Copy and complete these cells cell membrane chloroplast
contains chlorophyll
for photosynthesis
lets substances
into and out
of the cell
cell wall
nucleus
strong surface
which keeps the
cell in shape
controls what
goes on in
the cell
vacuole
cytoplasm
Animal cell
The vacuole removes substances that might be harmful to the cell and maintains an acidic internal pH.
The chemical reactions
Which keep the cell alive
take place in cytoplasm
Plant cell
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11. Teachers
instructions
Short Quiz
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12. F A rigid regular structure with strong walls to maintain its shape
cell
membrane
animal
cell
cytoplasm
cell wall F A B C D E F G H
vacuole
chloroplast
plant cell
nucleus
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13. B 2. The control centre of any cell chloroplast cytoplasm cell wall
vacuole A B C D E F G H B
animal
cell
cell
membrane
plant cell
nucleus
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14. B Small part of a cell which is needed for photosynthesis chloroplast
cytoplasm
cell wall
vacuole A B C D E F G H B
animal
cell
cell
membrane
plant cell
nucleus
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15. C 4 Substances get in and out of the cell by passing through it.
chloroplast
cytoplasm
cell wall
vacuole A B C D E F G H C
animal
cell
cell
membrane
plant cell
nucleus
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16. A 5 The part that gives the cell a regular shape chloroplast cytoplasm
cell wall
vacuole A B C D E F G H A
animal
cell
cell
membrane
plant cell
nucleus
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17. C 6 A changing space which keeps a plant cell in shape chloroplast
cytoplasm
cell wall
vacuole A B C D E F G H C
animal
cell
cell
membrane
plant cell
nucleus
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18. That’s all for now.
Any questions?
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19. Membranes allow things in and out of the cells
Substances
enter
and
leave
the
cell
Substances enter
and leave the cell
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20. The nucleus controls what goes on in the cell
I’m in
charge!!!
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21. Chloroplasts are found in plant cells.
Chloroplasts absorb
light and make food.
What is the name of this process?
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22. Instructions for the Quiz
The idea of this series of six questions is that they can be used as a
plenary at the end of each section of the work on cells. The question is
asked and the answers appear. After the answers have finished moving
they will eventually come to rest in the eight boxes which are labelled
A-H. The winner is the first pupil to identify the correct letter each
time. The winner can be determined in a number of ways.
The first person to shout out the correct letter.
The first person to put their hand up and give the correct answer.
The first person to hold up the correct letter from their cards.
With this third option pupils could be given a printed copy of the work
sheet which they can cut up before spreading the eight letters in front
of them on the desk.
The final way you could play the game just uses two sets of letters.
Two pupils are chosen to play with the winner staying on and the loser
passes their cards on to the next pupil who becomes the new challenger.
The winner is the pupil who wins the final question.
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worksheet

23. A B C D E F G H
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