Transcript TWO TYPES OF CELLS

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
1. Cell
Basic functional
unit of all living
things (building
blocks)
Picture
Paramecium
- Tiniest part of a
living thing
E. Coli (bacteria)
Red blood cell
Cells - FYI
All 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 - FYI
E. Coli (bacteria)
Cells can look very different
There are many types of cells
Living things can be made up of
ONE CELL or MANY CELLS!
Paramecium
There are approximately
100 trillion cells in the human
body…….100,000,000,000,000
Red blood cell
Examples of Cells
Amoeba Proteus
Plant Stem
Bacteria
Red Blood Cell
Nerve Cell
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
• Unicellular
• NO nucleus
2.
Prokaryotic • No organelles
• Has ribosomes
cell
(Prokaryote) • Circular DNA
• Very very small
Examples:
BACTERIA
Strept. bacteria
Picture
E. Coli (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
• Unicellular and
Multicellular
3.
• Membrane bound
Eukaryotic
Nucleus
cell
• Contains Organelles
(Eukaryote) • Has ribosomes
Red blood cell
• Linear DNA
• Big compared to
prokaryotic cells
Examples:
Shark skin
Animals, Plants, Fungi,Human cheek cells
Protists (algae)
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
Unicellular
Unicellular and
Multicellular
Nucleus in cell?
(yes or no)
No nucleus
Yes
Organelles in cell?
(yes or no)
No
Yes
Does it have
ribosomes?
(yes or no)
Yes
What type of DNA?
Examples:
No nucleus
Circular
Linear
Bacteria
Plant, animal,
fungi, protist cells
Exit Slip
Prokaryotes
Eukaryotes
What they both have in common