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Prokaryotic and Eukaryotic Cells

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Michelle Sanders

on 7 January 2016

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Transcript of Prokaryotic and Eukaryotic Cells


eukaryotic cells
. These cells...
Prokaryotes and Eukaryotes
(Anything in green, write down in your notes!)

Example of a eukaryote:
Why would radish cells be eukaryotic?
Talk with your table for 30 seconds and write your answer in your notebook:

Example of a eukaryote:
-Contain a nucleus that holds DNA
(looks like a double-helix)

-Have membrane-bound organelles

-Are larger in comparison to
cells because they have many important organelles:

Let's list the organelles that we know
(there are 11)!

Why would a unicellular organism like a
be a
Talk with your table for 30 seconds and write your answer in your notebook.

Example of a eukaryote:
-Is always on it's own (single-celled)

-Never has a nucleus
-Has DNA that is uncontained and floats in the cytoplasm of the cell (kind of looks like a rubber-band):

-Is simple and small in structure compared to eukaryotic cells

-Doesn't have membrane-bound organelles
are organisms that have
1 prokaryotic cell.
This cell...
Example of a Prokaryote:
Probiotic Bacteria
Example of a Prokaryote: Streptococcus Bacteria
Archaea Bacteria
(bacteria that live in extreme conditions)
Talk to your tables for 30 seconds and answer this question in your notebook:

If you are looking at a
, can you assume that you are looking at a multicellular organism? Why?
Why would streptococcus be a
Talk to your table for 30 seconds and write the answer in your notebook:

This archaeon lives at extremely high pressures in a deep-sea volcanic vent.
Talk with your table and answer in your notebook:
Why is an archaea cell prokaryotic?

Cell membrane
-Has cells that each have a nucleus
-Each organelle is enclosed by a membrane
***Although a human is multicellular, being multicellular does NOT necessarily mean it is eukaryotic.
Radishes cells are eukaryotic because:

-They have cells that each have a nucleus
-They have cells that have membrane-bound organelles inside of them
Paramecium are eukaryotes because:

-Their single-celled structure has a nucleus
-They have membrane-bound organelles inside their single-cell.
Prokaryote because:
- Bacteria are single-celled organisms

-If we had a stronger microscope, we would see no defined nucleus inside of each bacterium

-Bacteria have no membrane-bound organelles
Streptococcus would be a prokaryote because:
-Does not have a nucleus
-Simple in structure
-DNA floats around in the middle of the cell in the cytoplasm
-No membrane-bound organelles
HINT: Each pink circle is one bacterium!
This archaeon would be
because its cell:
-Does not have a nucleus
-Is simple in structure
-Its DNA floats around in the middle of the cell in the cytoplasm
-It has no membrane-bound organelles
-It is single-celled
With your table,
take 5 minutes
to do the following task in your notebook:
1. Create a Venn Diagram (two circles overlapping)

2. Label one circle Prokaryotes, and the other circle Eukaryotes

3. Label the overlapping section "Both"

4. Write the differences between prokaryotic and eukaryotic cells in the circles, and write what they have in common in the overlapping section.

5. Be prepared to present one of the differences or similarities that you write down!

Organelles in a Eukaryotic Cell:

1. Nucleus
2. Vacuoles
3. Cytoskeleton
4. Mitochondria
5. Cell membrane
6. Cell Wall
7. Chloroplasts

And some new organelles that you will soon learn about, all that have to do with how a cell gives and receives the nutrients it needs to survive...

8. Ribosomes
9. Endoplasmic Reticulum
10. Lysosomes
11. Golgi apparatus

**Note that the cytoplasm is not an organelle.
Know though:
Cytoplasm= fluid that holds everything organelles in place!

1 Bacterium
Definition of a eukaryote:
Definition of a
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