Cells Cells Everywhere

http://www.digitalapoptosis.com/archives/montreal/000454.html

Today’s Lesson

• Different Types of Cells• Plant Cells• Animal Cells• Activity

Different Types of Cells

• On earth – there are two main types of cells. They are:– Prokaryotes (single cell

organism): these are single celled organisms. The one cell does everything it needs to live by itself. It can move, get food, reproduce etc.

– Examples include bacteria and blue-green algae

http://kentsimmons.uwinnipeg.ca/16cm05/1116/16monera.htm

http://www.derm.qld.gov.au/water/blue_green/blue_green.html

Continued– Eukaryotes (multi celled

organisms): These cells can be plants or animals. Each cell normally has a specific job that it completes.

– For example, one type of cell may produce food, one may get rid of waste, one may help it move etc.

– These cells need each other to live. If they are not together, they will not survive.

http://larvalsubjects.files.wordpress.com/2009/08/origin1.gif

Questions

1. What is the difference between a eukaryote and prokaryote?

2. Find 2 examples of a prokaryote cell3. Find 2 examples of a eukaryote cell

Plant Cells

Different Parts

• Cell Wall – It covers the thin cell membrane. It is made of tough cellulose which strengthens the cell

• Chloroplasts – They carry out photosynthesis which trap light energy. It makes energy for the cell

• Cytoplasm – contains starch and is where chemical reactions occur to keep the cell alive

Different Parts # 2

• Nucleus – this controls what the cell does. It also contains instructions for making new cells.

• Vacuole – a large hole filled with liquid called cell sap. It helps keep the shape of the cell.

• Cell Membrane – is a thin skin around the cell. It controls what comes in and out of the cell.

Animal Cell

Different Parts

• The cell membrane is a thin outer layer that contains the cell and controls what goes in or comes out.

• The cytoplasm is a jelly like liquid where the chemical reactions to keep the cell alive occurs

• The vacuole is a storage area that may contain air, food or waste.

Different Parts #2

• Mitochondrion – these can be seen as small energy capsules that contains sugar and oxygen so energy can be released.

• Cell Nucleus – this controls what the cell does along with contain instructions to make a new cell

Similarities and Differences

• Plant Cells: have tough cellulose cell walls, have chloroplasts, have a large permanent vacuole (hole) containing cell sap, many have a box like shape, have a nucleus on the side of the cell.

• Animal Cells: do not have cellulose cell walls, do not have chloroplasts, sometimes have small vacuoles but they never contain cell sap, shape varies (is different), have a nucleus in the middle of the cell.

Questions

1. Name the similarities between plant cells and animal cells. Can you think of any more than what is listed on this PPT?

2. Name the differences between plant cells and animal cells. Can you think of any more than what is listed on this PPT?

3. Find and describe 2 different types of plant cells.4. Find and describe 2 different types of animal

cells.

Activity

• Today, we will make and draw our own microscope slide samples.

• We need to draw 2 samples each.• Listen to your teacher carefully as it needs to

completed a certain way