Cells are the basic unit of life and the smallest functional units that make up all living things. They were first discovered and studied in the 1600s by scientists like Robert Hooke, Matthias Schleidan, and Theodore Schwann using microscopes. Cells come in two main types - plant cells and animal cells. Both contain a nucleus, plasma membrane, cytoplasm, organelles like mitochondria and lysosomes. Plant cells also contain a cell wall, chloroplasts, and a large central vacuole, while animal cells may contain one or more small vacuoles.

1. C E L L S
Are the basic unit of life
 Are the smallest functional
units in living things
All living things are made up of
cells

2. CELLS
DISCOVERERS
Cells were discovered with the use of a
microscope.

3. 1. Robert Hooke – is an English scientist who cut
a thin slice of cork and looked at it under the
microscope.(1665)
He described the image of the cork as
empty boxes which he called cells.

4. 2. Matthias Schleidan – a
German scientist who used
microscope to study plant cells
and concluded that plants are
made of cells.
3. Theodore Schwann – a German
scientist who observed different
animal cells and concluded that
all animals are made of cells.

5. The food that we eat is made of
substances that your body needs to
stay healthy and strong . These
substances are the nutrients that
provide energy and materials for cell
development, growth and repair.

6. NUTRIENTS
Are the sources of energy that
the cells and the different
parts of your body used to
accomplish your tasks.

7. ANIMAL CELL

8. PLANT CELL

9. PARTS OF
A CELL

10. 1. NUCLEUS – the control center of the
cell.
It contains the chromosomes
which are threadlike DNA –
containing structures.

11. 2. PLASMA MEMBRANE - is a semipermeable
membrane surrounding the cell.
It control the kind of substance that enters the cell,
particularly in the process of taking in water and
nutrients.
It also allows discharge of waste
materials

12. 3. CYTOPLASM – is the jellylike substance that
contains the organelles
ORGANELLES – are specialized
parts of the cell that are
analogous to organs.

13. 4. VACUOLE – acts as a storage for
water and substances.
5. ENDOPLASMIC RETICULUM – serves
as a pathway for transport of materials
throughout the cell.
6. GOLGI APPARATUS – processes
,packages, and stores cell secretion

14. 7. RIBOSOME – act as a
protein assembler
8. LYSOSOME - store enzymes
for the digestion of
carbohydrates, fats and proteins.

15. 9. NUCLEOLUS – PLAY AN
IMPORTANT ROLE IN PROTEIN
SYNTHESIS.
10. MITOCHONDRION - act as
the powerhouse of the cell
since it releases the needed
energy for cell activities,

16.  Both plants and animal
cells are eukaryotic their
nuclei are membrane –
bound. But plant cells
have parts that are not
present in animal cells.

17. 11. CELL WALL – is present in
plant cells that are made of
cellulose that protect, support, and
give them shape
12. CHLOROPLAST – it
contain the chlorophyll.

18. 13. CENTRIOLES – it
contain an important role
in cell division.
 A plant cell has a large vacuole
that store nutrients and other
substances for plant growth.

19. An animal vacuoles
cell may have one or
more small that
temporarily store water
and waste

20. SEATWORK
( 1 WHOLE SHEET
OF PAPER)

21. WRITE THE
FOLLOWING PARTS
IN THE CORRECT
AREAS OF THE
FIGURE

22. PARTS
PRESENT IN
PLANT CELL
PARTS
PRESENT IN
ANIMAL
CELL
BOTH
PLANT AND
ANIMAL

23. CENTRIOLES
NUCLEUS
ER
GOGI BODIES
VACUOLE
RIBOSOME
LYSOSOME
MITOCHONDRION
PLASMA
MEMBRANE
CYTOPLASM
NUCLEOLUS
CELL WALL
CHLOROPLAST