Download Cell Webquest - Cowan Science

Cell Webquest
Cells Webquest – Everyone must do the first part of this webquest, then you may pick any other sites to complete the required
3 parts for a 30 points. If you finish 3 parts you earn an 40 points
Part 1.
http://learn.genetics.utah.edu/content/cells/insideacell/
Click on the
link.
Once the cell appears, click
.
* Using the crosshairs, click on each of the organelles listed below and then complete the information in the table for each.
** To navigate after completing information on an organelle, click on
to return to the cell.
Scroll to the top of the page and click on the
link. Click on the link
at the bottom of the page.
1.
What are the oldest organisms on the planet? _______________________
a.
DESCRIBE THREE characteristics of these organisms:
b.
How many cells were these organisms made of? ___________
c.
How did these organisms CHANGE the Earth’s atmosphere? ___________________________
_____________________________________________________________________________
d.
How did changing the atmosphere effect OTHER organisms? __________________________
_____________________________________________________________________________
2.
What organelles are thought to once have been bacterial cells?
________________ &________________
3.
Define “symbiosis”:__________________________________________________________________
4.
What is the “Endosymbiotic Theory” ____________________________________________________
___________________________________________________________________________________
5.
How is it thought that membrane-enclosed structures first formed? (HINT: Look at the pictures.)
___________________________________________________________________________________
6.
What has happened to mitochondria and chloroplasts over millions of years? ___________________
___________________________________________________________________________________
7.
List FOUR similarities between mitochondria/chloroplasts and bacterial cells:
a.
____________________________________________________________________________
b.
____________________________________________________________________________
c.
_____________________________________________________________________________
d.
_____________________________________________________________________________
8.
What’s an abbreviation for mitochondrial DNA? _________
9.
You inherited ALL of your mitochondrial DNA from your _______________.
10. What’s a unique quality of mtDNA? _____________________________________________________
Cell Webquest
11. How is mtDNA related to evolution? ____________________________________________________
Part 2 Virtual Cell
A. The "Virtual Cell" will allow you to get a close-up view of several organelles in 3-D! You will be able to choose certain
organelles within the cell and manipulate them by zooming in on the organelle, rotating the image, and dissecting several
organelles to view their contents. The intent of the activity is to provide you with a better feeling of the appearance
(structure), function, and location of the organelles.
B. Click on the link to the Virtual Cell Main page http://www.ibiblio.org/virtualcell/index.htm
C. Click on the Bus that says Virtual Cell Tour
D. You should explore the following organelles within "The Virtual Cell": Please check them off as you go. Use the arrows to
navigate
o Cell membrane
o Nucleus (chromatin, nucleolus, ribosomes)
o Mitochondria
o Centrioles
o Smooth Endoplasmic Reticulum (ER)
o Rough Endoplasmic Reticulum (ER)
o Lysosomes
o Golgi Body
E. Click on the “Virtual Cell Tour” and answer the following questions: You can also go to The Virtual Text book – Click on it
from the Virtual Cell Main page, to get more detailed information http://www.ibiblio.org/virtualcell/textbook/contents.htm
1. Describe the process in which proteins are packaged by the Golgi Body (apparatus).
2. Describe the structure of lysosomes.
3. What are the functions of lysosomes.
4. Describe the outer and inner structure of mitochondria.
5. Why is the inner membrane of mitochondria ruffled?
6. Where might have mitochondria originated from? Why?
7. Describe the arrangement of microtubules that compose the centrioles. (HINT: look carefully at the image)
8. Describe the outer membrane of the nucleus.
9. Describe the inner contents of the nucleus.
10. Describe the appearance of the nucleolus.
11. Describe the appearance of the endoplasmic reticulum.
Cell Webquest
12. What makes the rough ER “rough”?
Part 3  Cells Alive- Internet Lesson .............www.cellsalive.com
Objectives: Understand the relative sizes of objects, including the cell, sketch and identify the function of cell structures; compare
eukaryote to prokaryote cells; compare plant and animals cells
Part A. "HOW BIG IS A...." (click on the interactive link "howbig" to access this page)
Instructions: Look at the objects that can be found on the head of a pink. Zoom in and out to determine which object is the smallest,
then slowly zoom out so you can see how other objects compare.
1. If you zoom all the way in, what is the smallest object on the head of the pin? ______________
Zoom out a little farther, what is the hook shaped object you see? ________________________
2. Compare each of the following objects on the pin, circle the one that is larger.
a) baker's yeast or e. coli
b) lymphocyte or ragweed
c) red blood cell or staphylococcus
d) ragweed or dust mite
3. In the photo below, there is a line that says 200 nanometers. This is used to help you determine how big an object is. It works
similar to the way a map works. The line reprents 200 nanometers, but the object itself is bigger.
Use the line to estimate how many lines (200 each) would fit across the object.
How big is it? ________
Part B: Go to Cell Models and locate the image of a bacterial cell . Label the image below.
Part C: Go to the Animal Cell Model and click through each of the parts and read their descriptions. Use the information to answer
the questions and make sketches of the cell organelles.
1. What do the mitochondrion do?
Cell Webquest
2. How big are the mitochondrion?
3. What is the function of the golgi apparatus?
4. What structure is found on the rough ER that is not found on the smooth ER?
5. Where is the nucleolus found?
6. What is the function of the nucleolus?
7. What is the function of the cytoskeleton?
8. What within the nucleus is responsible for providing the cell with its unique characteristics?
Go to the Plant Cell Model
9. What structure takes up the majority of the center space within the plant cell? What is its primary function?
10. What part of the plant cell give it is green color? How many of these structure are visible on the plant diagram?
Part D: Comparing Cells
Use what you know about each type of cell (reference pictures if needed), and place a check in the box if the cell has that
characteristic or structure.
Bacteria
Plant
Animal
Cell Wall
Cell Membrane
Nucleus
Cytosol
Central Vacuole
Chloroplast
Mitochondrion
Try taking the Online Quiz and see how well you do. Put your score here ____/10
Cell Webquest
PART 4 Cell Virtual Lab ___ out of 10 points –> You may choose to complete this virtual lab
http://www.glencoe.com/sites/common_assets/science/virtual_labs/E08/E08.html
Read and Follow all of the directions for the virtual lab here.
Make your data chart and put it here
Structure/Function
Animal Cell
Plant Cell
Answer the Journal Questions and put your answers below.
1.
2.
3.
4.
5.
Now try the Cell Membrane Virtual Lab - http://www.glencoe.com/sites/common_assets/science/virtual_labs/LS03/LS03.html