1. Cell structure
and
micro-organisms

2. Animals, Plants and micro-organisms, all are living
things.

3. In all living organisms we observe circulation,
growth, respiration, excretion, reproduction, etc
life cycle processess.
,..
Circulation, growth, excretion, reproduction

4. In all living things different body systems and
organs bring about these processes.

5. In living things bodies are made up of cells.

6. In 1665,Robert Hooke was the first one to find that
the structure of cell resembles that of a
honeycomb, made up of many small
compartments. This was a thin section of cork,
he observed under a microscope.

7. There are certain differences and certain
similarities between the plant cell and the animal
cell.

8. Cell is made of various constituents called organelles..

9. Animal cell – cell Membrane, cytoplasm, nucleus,
Golgi body, mitochondrion, Vacuole.
Plant Cell organelles - cell membrane, cell wall,
cytoplasm ,ribosome,plastids ,Nucleus, vacuole.

10. Organelles Structure Function
Cell membrane Outer covering,
thin, flexible layer
•Protects the inner
parts of cell
•Regulates the
flow of substances
that enter into and
pass out of the cell
•Maintains the
shape of the cell

11. Organelles Structure Function
Cell Wall Made up of
cellulose
•Gives the cell
strength
•Protection of
inner components

12. Organelles Structure Function
Nucleus Round
(Mostly)
Chromosomes
made from DNA
are inside the
nucleus
•Controls all the
functions of the
cell
•Takes part in cell
division

13. Organelles Structure Function
Cytoplasm Semi-fluid To accommodate
various organelles
and control their
movements.

14. Organelles Structure Function
Mitochondria Tabular shape,
double wall, inner
wall has folds
•Produce energy
from the food
material in the cell
•Powerhouse of
the cell

15. Organelles Structure Function
Golgi Bodies Stacks of flat,
membrane-bound
sacs
Store enzymes

16. Organelles Structure Function
Vacuole Empty space Stores products of
excretion and
secretions

17. Animal cells Plant cells
There is no covering around
the cell membrane
The cell wall surrounds the
cell membrane
Vacuoles are small [Vacuoles are large
No chlorophyll Has chlorophyll

18. Large animals, plants are made up of many cells
whereas some micro-organisms are uni-cellular.
e.g. Virus, bacteria, algae,etc.

19. Some micro-organisms are useful while some
are harmful.
Virus: Simple structure, Has a covering of protein. DNA
and RNA causes various diseases in plants and animals.