Download Cells Alive- Interactive Internet Lesson

Cells Alive- Interactive Internet Lesson
Website: www.cellsalive.com
Objective: You will look at computer models of cells; learn the functions and the descriptions of the cells, and
their components.
Navigating the site: Cellsalive.com has a navigation bar at the left. After accessing the site, click on CELL
BIOLOGY on the left side navigation bar. From here, you will access the links: “How Big is a…”, the animal
cell model, the plant cell model, and the bacterial cell model.
Part A: “How Big is a…”
Here you will look at objects found on the head of a pin. Your job is to rank them in order of size on the chart
below and estimate the length of each (in nanometers, micrometers, or millimeters). The line in the bottom right
corner of the screen is used to help you estimate. Sketch each of the objects.
Object
Sketch
Size in namometers, micrometers,
or millimeters
Human Hair
Dust Mite
Red Blood Cell
E. coli
Staphylococcus
Ebola virus
Rhinovirus
1
Part B: Bacterial Cell Model – Return to the “Cell Biology” link to access t his page, or hit your back button.
Click onSection
“Cell Models”.
19-1Scroll down and click on “take me to bacterial cell”. Label the various parts of the
bacterial cell. Are any of the same parts (BELOW) found in eukaryotic cells? If so, name
them______________________________________________________________________________________
Prokaryotes are bacteria
2
Part C: Animal Cell Model – You need to return to the “cell biology” link to access this page, or hit your back
button. Click on “Cell Model”. Click on “take me to animation”. Scroll down and click on “animal cell”.
For this model, you will need to click on the various parts of the cell to go to a screen that tells you about the
parts. Answers to the following questions are found there.
8. Cytosol goes by what other name (Don’t say
1. What do mitochondria do?
“soup”)?
2. How big are mitochondria?
9. What is the function of the cytosol?
3. What does the Golgi Apparatus do?
10. What is the function of the lysosome?
4. What is the difference between smooth and
rough ER?
11. Name two functions of the cell membrane?
5. Where is the nucleolus found?
12. What 2 macromolecules makeup the cell
membrane?
6. What does the nucleolus do?
13. What is found in the nucleus?
14. What is the function of ribosomes?
7. What does the cytoskeleton do?
15. Describe what makes up the cytoskeleton.
Part D: Plant Cell Model: You need to return to the “cell biology” link to access this page, or hit your back
button. Click on “Cell Model”. Click on “take me to animation”. Scroll down and click on “plant cell”.
Sketch the chloroplast
For this model, you will need to click on the various parts of the cell to go to a screen that tells you about the
parts. Answers to the following questions are found there.
Sketch the chloroplast
1. What is the purpose of the cell wall?
2. What other type of cell has a cell wall?
3. What inside of the chloroplasts, makes the plant
cells green?
4. What is the purpose of the chloroplast?
5. In plant cells, what does the vacuole do?
3
Part E: Overview: For the chart below, place a check in the box if the cell has that component.
Plant
Animal
Bacteria
Chloroplast
Large Central Vacuole
Ribosome
Mitochondria
DNA
Endoplasmic Reticulum
Cell Wall
Golgi Apparatus
Ticket out the Door: Proceed to cell quiz: How did you do on the quiz? Write out the terms and definitions that
you missed.
Extension: Try the puzzles if you have the time.
4