1. Cell Organelles
Use this presentation in conjunction with the Cell Organelle note-taking worksheet. Run through the entire presentation before using it in class so that you know what’s coming next! It helps to print the outline and notes to have with you while presenting so that there are no surprises. –JessB.org

2. Cell Organelles
Use this presentation in conjunction with the Cell Organelle note-taking worksheet. Run through the entire presentation before using it in class so that you know what’s coming next! It helps to print the outline and notes to have with you while presenting so that there are no surprises. –JessB.org

3. Cell Organelles Organelle= “little organ”
You may or may not wish to distinguish between cytosol and cytoplasm. The correct use of each term is shown here. Most high school textbooks, however, use the word “cytoplasm” to mean “cytosol.”

4. Cytoplasm
Constantly moving, support/holds organelles, transports materials
Found in both plant and animal
Clear, thick, jellylike substance
Between nucleus and cell membrane
Emphasize word parts here:
phospho= phosphate head; lipid= fatty acid tail
bi= 2

5. Cell Wall Rigid, protective & supportive barrier
Found in plant and bacterial cells
Made of cellulose (fiber), strong & stiff
Located outside of the cell membrane
This is an actual microscopic image. Explain that the colors are added digitally to enhance the different parts.

6. Cell Membrane
Provides protection & support, helps control movement of materials into and out of cell
Found in both plant and animal
Made of a phospholipid bilayer
Boundary of the cell: outer covering of animal cell and just inside the cell wall of plant cell
Emphasize word parts here:
phospho= phosphate head; lipid= fatty acid tail
bi= 2

7. Nucleus “Brain” of cell
Control center of the cell- regulates & controls all activities
Plant & Animal
Large, oval structure
Contains DNA
Surrounded by a nuclear membrane
“Brain” of cell
Cells with more than one nucleus include muscle cells and liver cells, largely because of the massive volume of cytoplasm and number of organelles that need controlling.

8. Endoplasmic Reticulum
Carries proteins from one part of the cell to another, or carries it out of cell
Tubular passageway
Rough ER: studded with ribosomes
Smooth ER: no ribosomes
Highway of the cell, Aka: ER
Connected to nuclear membrane & spreads throughout cell
It’s not necessary that the students can read the labels here; just point out the black dots are ribosomes.

9. Ribosome Site of protein synthesis Plant & Animal Grain like bodies
Produced in a part of the nucleus called the nucleolus
Plant & Animal
Grain like bodies
Found attached to rough ER or floating free in cytoplasm
A polypeptide is a chain of amino acids. In this diagram, you can see the ribosome is making a polypeptide, also known as a protein.

10. Mitochondria “Powerhouse of the cell”
Releases most of the energy for the cell to use through cellular respiration (break down of sugar into water and CO2)
Plant and Animal
Rod shaped structures
Bound by a double membrane
Explain that this diagram shows the mitochondria cut open to reveal the internal membranes.

11. What type of microscope may have been used to take this picture?
Vacuoles
Storage container for water, food, enzymes, wastes, pigments, etc.
Plant & Some Animal
Round, water filled sac
Storage Tank
Large central vacuole usually in plant cells
Many smaller vacuoles in animal cells
The image is 2D, so it must have been a light microscope or TEM. If the cell is very tiny, then a TEM was used. Otherwise, a strong light microscope could have captured this image.
What type of microscope may have been used to take this picture?

12. Which organelles do lysosomes work with?
Contain digestive enzymes that break down large food molecules into smaller ones,digests old cell parts & waste
Animal cells
Some plant cells (we think!?!)
Small, round structures
Cleanup Crew or Garbage disposal of the cell
Students should recognize the shapes of the Golgi and ER even if they cannot read the captions.
Which organelles do lysosomes work with?

13. Golgi Apparatus
Receives proteins and other materials from the ER, packages them, and distributes them to other parts of the cell or outside the cell
Found in animal and plant cells
Known as the “Warehouse”

14. Chloroplast Site of food (glucose) production
Chlorophyll captures energy of sunlight to help produce food – photosynthesis
Found only in plant cells
Large, irregular shaped, contains chlorophyll (green pigment)
Chloroplasts absorb light, which is the catalyst for photosynthesis.

15. Quick Review Which organelle is the control center of the cell?
Nucleus
Which organelle holds the cell together?
Cell membrane
Which organelles are not found in animal cells?
Cell wall, central vacuole, chloroplasts
Which organelle helps plant cells make food?
Chloroplasts
What does E.R. stand for?
Endoplasmic reticulum
You may choose to delete the answers from the PowerPoint or change the animation so that they come in after all 5 questions are asked in case you want to quiz students individually at the end.