Download Cells_Alive_Lab[1] 2

Name:____________________________
Date:_______________ Period:______
Lab Partner ____________________
Cells Alive – Internet Lesson (www.cellsalive.com)
Objective: You will learn the descriptions and functions of cells through the use of computer
models.
Navigating the site: Cells alive has a navigation bar at the left. After accessing the page, 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
Human Hair
Dust Mite
Red Blood Cells
E. coli
Staphylococcus
Ebola virus
Sketch
Size in nanometers, micrometers or
millimeters
Rhinovirus
Part B: Bacterial Cell Model (prokaryotic)
(You will need to return to the “Cell Biology” link to access this page, or click on the back
button.) Click on “Cell Models.” At the top of the page, click "Bacterial Cell"
Draw an example of a bacteria cell. Label the following parts of a bacterial cell: cell wall,
capsule, cell membrane, ribosomes, nucleoid, flagellum
Part C: Animal Cell Model (eukaryotic)
Click on "Plant and Animal Animations" at the top of the page. From there, click on Animal
cell underneath the animation. For this model, you will need to click on the organelles of the
cell to go to a screen that tells you about the parts. Answers to the following questions are
found there not the left and draw the structures indicated on the right.
Sketch each of the
following:
Mitochondria
1. What do mitochondria do?
2. How big are mitochondria?
________________________________________________________________________
3. Describe the structure of the cell membrane.
Cell Membrane
________________________________________________________________________
4. What is the function of the nucleus?
Nucleus
5. Where is the nucleolus found?
6. What does the nucleolus do?
________________________________________________________________________
7. What does the cytoskeleton do?
Cytoskeleton
8. Cytosol goes by what other name?
9. What is the function of cytosol?
________________________________________________________________________
10. What is the function of the lysosome?
Lysosome
________________________________________________________________________
11. What is the function of the Golgi?
Golgi
________________________________________________________________________
12. How is rough different from smooth endoplasmic
Rough Endoplasmic
reticulum?
Reticulum
13. What is the function of a ribosome?
Part D: Plant Cell Model (eukaryotic)
From their, click on Plant Cell underneath the animation. For this model, you will need to click
on the organelles of the cell to go to a screen that tells you about the parts. Answers to the
following questions are found there not the left and draw the structures indicated on the right.
Sketch the following:
1. What other type of cell has a cell wall?
2. What makes the plants cells green?
Chloroplast
3. In plant cells, what does the vacuole do?
Vacuole
Part E: Overview
For the chart below, place a check in the box if the cell has that component.
Organelle
Chloroplast
Vacuole
Ribosomes
Mitochondria
DNA
Nucleolus
Cell Wall
Cell Membrane
Plant
Animal
Bacteria
1. What is the main characteristic that sets prokaryotic cells (bacteria) apart from eukaryotic
cells(plants and animal cells)?
2. What are 3 structures plant cells have that animal cells do not? Why is each structure in
an plant but not an animal?