Higher Biology

Cell Variety

2

By the end of this lesson:

You should be able to:

Know that a large variety of cell types existKnow what a unicellular organism isKnow what a multicellular organism isKnow why multicellular organisms have different types of cell

3

Characteristics of Living Cells

How many can you name?

There are 7!

4

Typical Animal Cell

5

Typical Plant Cell

How many structures can you name?

1Cell Wall

ChloroplastVacuole

Cytoplasm Cell Membrane

Nucleus

6

5

4

3

2

6

Cell Parts

Make sure you know the functions of the following:

Which ones are in animal cells, plants cells or both?

Cell Wall Chloroplast

Nucleus

Cytoplasm

Vacuole

Cell Membrane

7

Unicellular Organisms

Consist of 1 cell! That cell has to do all the jobs to keep

the organism alive

Euglena

Paramecium

8

Unicellular Organisms

Insert the “Unicellular Organisms” diagram into your notes.

On the diagrams, label as appropriate: Nucleus Cell wall Chloroplast Cilia Contractile vacuole

9

Multicellular Organisms

Made of many different types of cell

Each type of cell carries out a different function.

10

Multicellular Organisms

1. Insert the “Animal Tissues” diagram into your notes.

2. Name each of the tissues and the types of cells present.

3. Below each diagram describe the function of each cell type.

4. Describe how red blood cells and ciliated columnar cells are suited to their function.

11

Multicellular Organisms

1. Insert the “Plant Tissues” diagram into your notes.

2. Name each of the tissues and the types of cells present.

3. Below each diagram describe the function of each cell type.

4. Describe how palisade mesophyll cells and root hair cells are suited to their function.