Into to cells?Objective:

1. You will be able to explain what cells are

and

2. You will be able to differentiate between the 2 types of cells.

Warm up

1. What are cells?

2. What do cells do?

Word Definition Picture

1. Cell

Basic functional unit of all living things (building blocks)

- Tiniest part of a living thing

Red blood cell

Paramecium

E. Coli (bacteria)

Cells - FYIAll living things are made up of cells! (including you!)

Cells do all the life functions that we do: - grow - make energy - reproduce - get rid of wastes - need food (to make energy) - die

Cells - FYICells can look very different

There are many types of cells

Living things can be made up of ONE CELL or MANY CELLS!

There are approximately 100 trillion cells in the human body…….100,000,000,000,000

Red blood cell

Paramecium

E. Coli (bacteria)

Examples of CellsExamples of Cells

Amoeba Proteus

Plant Stem

Red Blood Cell

Nerve Cell

Bacteria

What are cells made of?Cells are mostly water. The rest of the present molecules are:

•protein

•nucleic acid

•carbohydrate

•lipid

•other

There are many cells but scientists classify cells into 2 types:

• Procaryotic cells

• Eukaryotic cells

Word Definition Picture

2. Prokaryotic cell (Prokaryote)

• Unicellular • NO nucleus• No organelles • Has ribosomes • Circular DNA• Very very smallExamples:BACTERIA

E. Coli (bacteria)

Strept. bacteria

Prokaryotic Cell

Did you know?

Prokaryotic cells were probably the first type of cells to exist on Earth and are commonly found in the oldest fossils ever found.

Word Definition Picture

3. Eukaryotic cell (Eukaryote)

• Unicellular and Multicellular • Membrane

bound Nucleus • Contains

Organelles• Has ribosomes• Linear DNA• Big compared

to prokaryotic cells

Examples:Animals, Plants,

Fungi, Protists (algae)

Red blood cell

Human cheek cellsShark skin

Eukaryotic Cell

Did you know…. Eukaryotic cells are more complex and are larger. This type of cell has a nucleus and many organelles inside. This allows the cell to perform many different jobs in multicellular organisms!

Prokaryotic Cells Eukaryotic Cells

Unicellular or Multicellular

Nucleus in cell? (yes or no)

Organelles in cell? (yes or no)

Does it have ribosomes? (yes or no)

What type of DNA?

Examples:

Unicellular

No nucleus

No

Yes

Circular

Bacteria

Unicellular and Multicellular

Yes

Yes

No nucleus

Linear

Plant, animal, fungi, protist cells

Exit Slip

Prokaryotes Eukaryotes

What they both have in common