What are all living things made of?

CellsAnimal

What do you already know about cells?

Are there any words you associate with cells?

What is a cell?http://bit.ly/dOAsO6

Eye-piece

Optic tube

Arm Objective lens

Focus control Stage

Light

Base

Always carry a microscope holding the arm

1

2

4

6

8

7

5

3

9

Animal Cell Slide1. Place a drop of methylene blue on your slide

2. Rub the inside of your cheek with a cotton swab then rub it on your slide

3. Place your swab in disinfectant. DO NOT put in on the table

4. Carefully lower a cover slip over the sample, use a pencil to help you

5. Make sure you have no air bubbles

Scientific DrawingMake a scientific drawing of an animal cell.

Rules of scientific drawings: Use only straight lines Do not colour or shade in Label each part with a straight line. No arrow head

Animal Cell1. Write the title Animal Cell in your jotter2. Copy the animal cell diagram below

Cell Membrane

Cytoplasm

Nucleus

Cellshttp://www.brainpop.com/science/

cellularlifeandgenetics/cells/preview.weml

CellsPlant

Plant Cell Slide1. Peal off a thin layer of onion tissue and place on a slide

2. Carefully spread the piece of tissue out so that there are no folds

3. Place a couple of drops of iodine on the onion tissue

4. Carefully lower a cover slip over the sample, use a pencil to help you

5. Make sure you have no air bubbles

Scientific DrawingMake a scientific drawing of a plant cell.

Rules of scientific drawings: Use only straight lines Do not colour or shade in Label each part with a straight line. No arrow head

Plant Cell1. Write the title Plant Cell in your jotter2. Copy the animal cell diagram below

Cell Membrane

Chloroplast

Cell Wall

Vacuole

Cytoplasm

Nucleus

Cell structure and function

Each part of a cell has its on role to play in the working of it.

Using the cards match each cell structure to its function.

(you have 2 minutes)

Cell Structure Function Animal Cell

Plant Cell

Nucleus

Cell Membrane

Cytoplasm

Cell Wall

Chloroplasts

Vacuole

The control centre of a cell.

This controls what substances can enter and leave the cell.

The jelly like filling of a cell. This is where chemical reactions take place in a cell.

The rigid firm coating found around a plant cell. It helps to keep the cell shape.

Contain a green chemical called chlorophyll which absorbs sunlight. Allow plants to make their own food.

Can store sugar and water. Helps to control the water content of plant cells

CellsVariety

Plant or Animal cell?

Plant Cell Animal Cell

? Why?

Plant or Animal cell?

D

F

E

C

B

A

Cell Membrane

Chloroplast

Cell WallVacuole

Cytoplasm

Nucleus

Plant Cell Animal Cell

?

Animal, Plant and Microbial Cells

Animal Cell Plant Cell Microbial Cells

Similarities and Differences?

In your jotter…Microbial Cells

Microbial cells do not have a nucleus.

Examples of microbes

Bacteria: Lactobacillus, E. coli

Some cells are specialised for a particular job.Below are pictures of plant, animal and bacterial cells.

They all look different because they have different jobs to do.

Can you think of reasons why they look this way?

Sperm cellRoot cell

Bacterial cell

Blood cell

Pollen cell

Windpipe cell

Leaf cell

Nerve cell

How big are cells?Arrange the pictures in order from

biggest to smallest…

• Coffee bean• Grain of salt• Amoeba• Paramecium• Human egg cell• Skin cell• Red blood cell• Sperm cell• Bakers yeast• E. coli• Influenza virus• Carbon atom

Biggest

Smallest

Plant, Animal or Microbial Cell?

Write your answer on a whiteboard

You should be prepared to explain your answer

Animal Cell

Cell membrane

Nucleus

Cytoplasm

1

2

3

4

Plant Cell

Chloroplast

Cell Wall

Vacuole

Cytoplasm

Cell Membrane

Nucleus

1

2

3

4

5

6

7

LinksPlant cellhttp://www.kscience.co.uk/animations/plant_cell.htm

Animal cellhttp://www.kscience.co.uk/animations/animal_cell.htm

Cellshttp://www.brainpop.com/science/cellularlifeandgenetics/cells/preview.weml

http://www.brainpop.com/science/cellularlifeandgenetics/cellstructures/preview.weml

Cells3D Model

ChallengeYour challenge is, in pairs, to create a 3D model of a cell

using the materials provided.

Paper GluePlastic tubs PensBalloons Card (different colours)Jelly Sandwich bags

(medium/small)Peas FoamPaper plates (big/small) SpongesMarbles Bubble wrapLollypop sticks

Once all models are complete you will each take turns going round looking at each others and giving feedback.

Some ideas

First, plan your 3D cell model.You may look at the materials available, but ask first if you want

out your seat.

Paper GluePlastic tubs PensBalloons Card (different colours)Jelly Sandwich bags

(medium/small)Peas FoamPaper plates (big/small) SpongesMarbles Bubble wrapLollypop sticks

You may not start building your model until I have seen your plan.