All living things are made up of cells, which are the basic unit of life. The document discusses the structure and function of different cell types in the human body. It explains that cells have a cell membrane, cytoplasm, and a nucleus containing DNA that determines inherited traits. Specific cell types like bone, muscle and blood cells are specialized to perform important functions - bone cells make bones, muscle cells contract to enable movement, and red blood cells carry oxygen throughout the body. Working together, cells allow the human body to function efficiently.

1. Module 3:
Wonders of My Body (I)
Chapter 9 Cells As The Basic Units Of Life
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2. Chapter 9 Cells As The Basic
Units Of Life
9.1 What are living things made of?
9.2 What are the different types of cells
and their functions?
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3. Objectives
 State that all living things are made of
cells, which are the basic units of life
 Recognise that genes are found within
the nucleus of a cell that control the
traits of humans that are passed from
parents to children
 Label the parts of a typical animal cell
(cell membrane, cytoplasm, nucleus)
on a drawing
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4. What are cells?
 Our body is made
up of cells.
 Each cell is a basic
unit of our body.
 All living things are
made up of cells.
 The cell is the basic
unit of life.
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5. The Microscope
 Cells are very
tiny.
 We cannot see
them without a
microscope.
 A microscope
uses lenses to
make objects
look bigger.
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Activity Book Link
Activity 9.1
Using a Microscope

6. Parts of an Animal Cell
 An animal cell has three parts: the cell
membrane, the cytoplasm and the
nucleus.
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7. Cell parts and their functions
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8. Cell parts and their functions
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Activity Book Link
Activity 9.2
Structure of a Cell

9. What determines our traits?
 Characteristics
(traits) are passed
down from parents
to their children.
 This process is
known as heredity.
 Genes found in the
nucleus of cells.
carry information
that determines our
characteristics.
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traits that are inherited
Activity Book Link
Activity 9.3
Cells and Cell Structure
Activity 9.4
Observing Human Traits

10. Chapter 9 Cells As The Basic
Units Of Life
9.1 What are living things made of?
9.2 What are the different types of
cells and their functions?
10© Copyright Star Publishing Pte Ltd

11. Objectives
 State that all living things are made of
cells, which are the basic units of life
 Recognise that genes are found within
the nucleus of a cell that control the
traits of humans that are passed from
parents to children
 Label the parts of a typical animal cell
(cell membrane, cytoplasm, nucleus)
on a drawing
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12. Cells Working Together in the Body
 The different types
of cells in our bodies
differ in their shape,
size and what they
do.
 Each type of cell
carries out a specific
function in the body.
 This allows our body
to function
efficiently.
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13. Although different cells in our body carry out
different functions, they need to work together to
help our body work efficiently.
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13
Activity Book
Link
Activity 9.5
How Our Body
Works
Activity 9.6
Different
Types of Cells
in Our
Body Doing
Specialised
Work

14. Bone Cells
 A bone cell is a specialised cell. It has a specific
function, that is to make bones that support our
body.
 A bone cell, like most animal cells, has a
nucleus, cytoplasm and cell membrane.
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15. Bone Cells
 Bone cells contain a lot of calcium
and phosphates that help to keep our
bones healthy, strong and solid.
 As we grow old, these chemicals are
lost from our bones and our bones
become weaker.
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16. Red Blood Cells
 Blood is an important tissue of our
body as it carries nutrients to and
removes waste materials from cells.
 Blood contains different types of
cells.
 One important type of cell is the red
blood cell.
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17. Red Blood Cells
 Red blood cells transport
oxygen from the lungs to
the rest of the body.
 Red blood cells do not
have a nucleus because
they need to carry more
oxygen.
 They contain a red
pigment called
haemoglobin which binds
to oxygen and carry it
around the body.
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red blood cells

18. Muscle Cells
 The muscle cell is
another
specialised cell.
 It has a cell
membrane,
nucleus and
cytoplasm.
 Muscle cells
contract and relax
to help us move.
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muscle cells make up
muscle tissue.

19. Muscle contraction and relaxation allow
us to move our arms
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