lss module 3 chpt 9 cells

Module 3:Wonders of My Body (I)Chapter 9 Cells As The Basic Units Of Life

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Chapter 9 Cells As The Basic Units Of Life9.1 What are living things

made of? 9.2 What are the different types of

cells and their functions?

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ObjectivesState 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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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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The MicroscopeCells 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 LinkActivity 9.1Using a Microscope

Parts of an Animal CellAn animal cell has three parts:

the cell membrane, the cytoplasm and the nucleus.

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Cell parts and their functions

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Cell parts and their functions

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Activity Book LinkActivity 9.2Structure of a Cell

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 LinkActivity 9.3Cells and Cell StructureActivity 9.4Observing Human Traits

Chapter 9 Cells As The Basic Units Of Life9.1 What are living things made

of? 9.2 What are the different

types of cells and their functions?

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ObjectivesState 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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Cells Working Together in the BodyThe 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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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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Activity Book LinkActivity 9.5How Our Body WorksActivity 9.6Different Types of Cells in OurBody Doing Specialised Work

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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Bone CellsBone 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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Red Blood CellsBlood 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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Red Blood CellsRed 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

Muscle CellsThe 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.

Muscle contraction and relaxation allowus to move our arms

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