What do all these have in common?The very smallest living organisms are single cells which carry out allThe functions of living things. As organisms get bigger and are made up of many cells, some of these cells become specialized to carry outspecial jobs.

What is the picture?What do you think these special cells do for plants or animals?

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Open a word document to take notes.

SPECIALISED CELLS

1. All must be able to describe with examples, how cells are specialised to perform different functions.

2. Most should be able to state how cells group together to form tissues.

3. Some could state how specific cells are adapted to their function.

1. What is the picture?

2. Read what is a specialised cell

3. Powerpoint showing different specialised cells

4. Note Making with Word

5. Quiz on plant and animal cells

Learning Objectives: Learning Activities:

WHAT IS A SPECIALIZED CELL? Plants and animals consist of many cells and so

are known as multicellular They contain many different types of cells. Each type of cell is designed to carry out a

particular job or function. This is known as cell specialization Not all cells look the same. Some cells have a special shape and features to

help them do a certain job. Muscle cells have different structure to blood and

nerve cells in animals. In plants the cells where photosynthesis happens are very different to root hair cells.

Note Making Activity1. The following slides show some examples of

specialized cells2. Read through the information3. Insert a table into your word document with 3

columns. 4. Title the first column Type of cell, the second

column Diagram, and the third column features/ job. Type of Cell Diagram Features/jobs

• Fill the columns with information from the slides. You may have to read go back and read the slides more than once to complete the table.

• Save the document in your z-drive before the end of class so you have it tomorrow.

SPERM CELL

The head contains enzymes which allow it to digest into an egg cell and join with it.

Head contains enzymes & nucleus

Tail

Designed to Fertilise eggs.

A sperm is small and has a long tail that provides movement so it can swim and find an egg cell.

Found in the Testes

EGG (OVUM) CELL

Designed to be Fertilised.

Found in the Ovaries.

An egg cell is large and bulky.

Contains yolk which provides a large food store for the new cell being formed.

Cytoplasm containing yolk

Layer of jelly

Nucleus

PALISADE CELL

Designed for Photosynthesis

Found in the top of a leaf

Tall and has a large surface area to absorb water and minerals.

Packed with chloroplasts to help make plant food.

Nucleus

Chloroplasts

CILIATED CELL Designed to stop Lung

Damage

They line all the air passages in the lungs.

They have tiny hairs called cilia.

Hairs sweep mucus with trapped dust and bacteria back up the throat.

Nucleus

cilia

ROOT HAIR CELL

Designed for absorbing.

•Thin cell wall makes it easy for minerals to pass through.

•Has a large surface which helps it to absorb water and minerals.

•Found in a plant root.

Vacuole

Cell membrane

thin cell wall

nucleus

Long making it able to change Shape. This is called contraction.

Muscle cellFound in animals

NERVE CELL (NEURONE)

•They are long •They have connections at each end •Can carry electrical signals •Their job is to carry nerve impulses to different parts of the body.

Nucleus

RED BLOOD CELL

•Designed to carry oxygen •Found in blood.•Large surface area, for oxygen to pass through. •Contains haemoglobin, which joins with oxygen.•Has no nucleus

Xylem cell

Found in a plant (the stem)

Join together to form xylem tubes that carry water from roots to leaves of plants

Copy and fill in the gaps:

Some cells have special jobs to do. They often have special shapes to help them do their job. We say that these cells are _________________ to do their jobs. A group of the same type of cells, all working together, is called a _________________ . A group of muscle cells all grouped together is called _________________ . Muscle cells help us to _________________ .

adapted move muscle tissue

Task:• Finish your table, save and

print. Don’t forget to put you

name on your paper then turn in to teacher.

• Complete the homework

B2c/3 and B2c/4 (you can answer

directly on the sheets)