2.1 Cell – structure, function and organisation

2. CHAPTER 2
Cell as the Basic Unit of
Life
Subtitle

3. Cells make up the smallest level of
a living organism such as yourself
and other living things. The
cellular level of an organism is
where the metabolic processes
occur that keep the organism alive.
That is why the cell is called the

4. The cellular level is the level of cells,
the most basic structural units of the
human body. Just like a house is made
of many individual bricks sealed
together by cement, the human body is
comprised of millions of cells that
combine to form tissues, organs and
whole organisms.

5. Cells
(basic unit of life)
Tissues
(A group of cells performing a similar
function)
Organs
(A group of tissues performing a
similar function)
Organ System
(A group of organs performing a similar
function)
Organism
(You and Me)

6. • The cell (from Latin cella, meaning "small
room") is the basic structural, functional,
and biological unit of all known living
organisms.
• A cell is the smallest unit of life that can
replicate independently, and cells are
often called the "building blocks of life".
• The study of cells is called cell biology.

7. The Cell Theory
1.All organisms are
made of cells.
2.The cell is the basic
unit of life in all living
things.
3.All cells come from

8. 2.1
CELL – STRUCTURE,
FUNCTION &
ORGANISATION

9. What is a Cell?

10. Cells carry out all life’s functions such as
growth, respiration, reproduction and
excretion.
A cell resembles a microscopic factory
where thousands of chemical reactions
occur.
Cells undergo division process to form
new cells and replace damaged cells.

11. http://www.cancercenter.com/what-is-cancer/

13. The Structure of
Animal Cells
and
Plant Cells

14. To investigate the structure of animal cells using
cheek cells

15. Magnification power 40X

16. Cell cheek diagram

17. To investigate the structure of plant cells using
onion cells

18. Magnification power 40X

20. Functions of
Structure
in
Animal Cells
and

24. Unicellular and
Multicellular Organism

25. • A unicellular organism is
composed of only one cell.
• A multicellular organism is
composed of numerous cells
that work together, usually a
collection of different cells
with specialised functions -
e.g. for humans, neurons,
liver cells and muscle fibres

30. The Formation
of
an Organism

32. Systems
in
the Human
Body