study of cell

1. JSS MAHAVIDYAPEETA
MYSORE-04
JSS INSTITUTE OF EDUCATION
SAKLESHPUR
Submitted by,
Santhosh. C
First year B.Ed
JSS college

2. STUDY OF CELLS

3. Discovery of a Cell
Earliest Microscopes
• Compound light microscope, mid-1600s
• Observations led to discoveries
• Hooke’s study of cork through microscope (1665)
• Leeuwenhoek saw living things in pond water (1674)

4. Robert hooke
He was born on 1635
He was an English naturalist. He
designed a microoscope and examined
a thin section of a dried cork under it.
He saw honey comb like structures in it
and finally he called them as cells.
The word cell means small room

5. ROBERT HOOKE

6. Development of the Cell
Theory (Early 1600’s) - Invention of the first microscope
 1665 - Robert Hooke’s observation of cork under compound
microscope
 1674 - Anton van Leeuwenhoek discovers tiny living things in
 pond water
 1838 - Matthias Schleiden states all plants are made of cells
 1839 - Theodor Schwann concludes all animals made up of cells
 1855 - Rudolph Virchow says that all cells come from existing cells

7. Cell Theory
 Observations and conclusions by many scientists
led to understanding of the cell
 Cell Theory:
1) All livings things are made of cells
2) Cells are basic units of structure/function
in living things
3) New cells are produced from existing cells

8. Types of Cells
1. Prokaryotes
 Very ancient
 Very small and simple
 Bacteria
 No nucleus

9. Eukaryotes
 Larger and more complex
 Organized structures
 Contains a nucleus

10. Eukaryotic Cell (Plant)
Cell Structure and Function

11. Cell Structure and Function
Eukaryotic Cell (Animal Cell)
Divided into two parts: nucleus and cytoplasm
Contains many functional “little organs” or
organelles
1. Nucleolus
2. Nucleus
3. Ribosome
4. Vesicle
5. Rough ER
6. Golgi Apparatus
7. Cytoskeleton
8. Smooth ER
9. Mitochondria
10. Vacuole
11. Cytoplasm
12. Lysosome

12. What is the Nucleus?
 Control center
– Contains DNA -> Coded set of instructions
 Instructions for making molecules like proteins

13. CONCLUSION
I finally conclude that all organism's are
made up of small units called cells. As
are the bricks to a building, so are the
cells to the body of an organisms.

14. Review
 http://www.wiley.com/legacy/college/boyer/0470003790/animation
s/cell_structure/cell_structure.htm

15. THANK
YOU