Unicellular and pluricellular living things

1. LIVING BEINGS

2. All living beings are
made up of cells

3. Life started long time ago...
Every single living being
evolved from simpler
structures of cells than
they are now.

4. Unicellular living beings
Their bodies are made up of one
cell,like virus and bacterium

5. Cells organized in groups
becoming into a new structure.

6. What are CELLS?
•Cells are the tiny building blocks of living
things.
•All cells, whether plant or animal have the same
basic parts: cell membrane, cytoplasm,
nucleus,nuclear membrane,vacuoles and
mitochondria.
Each part performs a specific function.
•A cell is able to reproduce by means of
splitting. Previously the nucleus doubles and
divides in half so each new cell has a copy of
the cell´s instructions

7. ANIMAL CELL

8. How do cells work?How do cells work?
•They use their parts to perform different jobs.
•Cell membrane separates it, gives the cell its shape and control
what goes into and out of it.
•Cytoplasm is a jellylike liquid. It is inside the cell membrane.
•Vacuoles are tiny oval structures that store food, water or wastes.
They are inside the cytoplasm.
•Mitochondria helps to change food into the necessary energy to do
the cell work. It is inside the cytoplasm too.
•Nucleus contains the instructions for running the cell. It is
surrounded by the nuclear membrane whose function is similar to
cell membrane.

9. PLANT CELL

10. PLANT CELLS HOWEVER...
•...have two additional parts that animal cells do
not.
•Plant cells have cell walls around the cell
membrane to support and protect the cell.
•Plant cells also contain chloroplasts with a green
substance called chlorophyll.
Chlorophyll traps energy from sunlight and
enables the plant to make its own food.

11. Cells form
tissues

12. CELLS ARE DIFFERENT
•Cells do not all look the
same. Their shape
depends on the job they
do.
•A group of cells which
carry out a specific task
form a tissue.
• All tissues that make a
common function form
an organ.

13. Tissues, organs
and systems
There are several systems
in the bodies of living
beings that are
organized and
specialized to do specific
tasks .
All systems have to work
at the same time in a
coordinated process.