Download Euglena Facts

Cells via Cells
(Using Cellular Devices to Study Living Cells)
Purpose: In this activity, we will be reviewing key objectives regarding the cell unit.
Materials: At least one smart phone per group, writing utensils, paper, colored pencils
and class notes.
Procedure: There are 11 stations set up in the laboratory with different quests to
complete at each station. Your group is to complete the quest at one station before
moving to the next. You may not move to a station unless it is available. Ten stations
will have QR codes you will need to scan with your cell phone. These codes may be
linked to a youtube video, a website, or a text or video assignment. There is one station
in which you will be using Edmodo Apps. Complete each of the 11 tasks with your
group. All members will record your group answers and turn them in together as a group.
Remember that you must abide by the terms of the Acceptable Use Policy regarding cell
phones (only use them for the educational purpose for which you are instructed).
Hopefully, if all groups are finished, at the end of the lesson your group will complete a
Gradecam quiz. In order to finish, you will need to work quickly and quietly. Remember
to speak only so that your group may hear your conversation. Good Luck!!
Common Core Standards Biology:
Station 1 B1e, B1f
Station 2 B1a
Station 3 B1j
Station 4 B1a, B1b
Station 5 B1e
Station 6 B1a
Station 7 B1e, B1f
Station 8 B1i
Station 9 B1e, B1f
Station 10 B1d
Station 11 B1g
STATION # 1
Euglena Facts
http://www.buzzle.com/articles/euglena-facts.html
Euglena Osmosis Scenario
A Euglena is a freshwater protist. The solute concentration inside the Euglena is always
greater than the solute concentration in the surrounding water. The scanned code will
take you to a site that has reference information regarding the Euglena.
1.
2.
3.
4.
5.
6.
Using colored pencils, draw a diagram of the Euglena and its surroundings using
one color for the water and a different color for the solute. (Include a key or
legend).
Label the inside of the Euglena as hypotonic, hypertonic or isotonic.
Label the environment of the Euglena as hypotonic, hypertonic or isotonic.
Using an arrow, indicate the direction water will flow; either inside the Euglena or
out of the Euglena.
Will the size of the Euglena increase, decrease or stay the same?
Why is a contractile vacuole important to the survival of this organism?
STATION # 2
Eukaryotes vs. Prokaryotes
http://www.youtube.com/watch?v=yWy4o_UfZ4A&feature=related
Analyzing Eukaryotic Cells and Prokaryotic Cells
On your paper draw a Venn diagram like the one shown but larger. Label one oval
Eukaryotic and the other Prokaryotic and the center Both.
View the You tube video and place the following words in the correct positions on the
Venn diagram:
Contains DNA
Bacteria
Make proteins
Amoeba
Lack a nucleus
Contains chromosomes
Contains a singular DNA molecule
Has membrane bound nucleus
Has no membrane bound organelles
All other cell types
Has a cell membrane
Humans
Has cytoplasm
Has ribosomes
STATION # 3
Mitosis Tutorial
http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells3.html
Read the tutorial and answer the questions;
1. Mitosis results in how many cells? Describe them.
2. Is Interphase a part of Mitosis? What is the main thing happening during this
phase in the cell cycle?
3. Match the events that occur with the correct phase:
I. Prophase
II. Metaphase III. Anaphase IV. Telophase
a. Spindle fibers align the chromosomes along the middle of the cell.
b. Chromatids arrive at opposite poles of the cell and new membranes form
around the daughter nuclei.
c. Chromosomes separate and move to opposite sides of the cell
d. Chromatin begins to condense and becomes visible as chromosomes.
4. Contrast animal cell cytokinesis and plant cell cytokinesis.
STATION # 4
At this station, you will log into one of your group members’ Edmodo account. After
clicking into the class (to the left), you will click on the APP icon at the top. Click on the
Plant Cell activity. When you have successfully completed the activity, take a picture of
the screen. Then, click on the Animal Cell activity. Again, take a picture with your
phone of the completed screen. You may keep these photos to study. You may also
attach your pictures to a post to a direct message to me on Edmodo.
STATION # 5
Fluid Mosaic
http://www.youtube.com/watch?v=LKN5sq5dtW4
Scan the code and view the linked video. Complete the diagram.
Fluid Mosaic Model/Diffusion of the Cell Membrane
1.
2.
3.
4.
5.
6.
7.
8.
9.
To which group of
organic compounds
does A belong?
___________________
To which group of
organic compounds
does B belong?
___________________
To which group of
organic compounds
does C belong?
___________________
Color the hydrophobic
(water fearing) parts of
the lipids yellow
Color the hydrophilic
(water loving) parts of
the lipids red
Color the proteins blue.
Label the phospholipids
bilayers
Label the polar part(s)
of the membrane
Label the nonpolar part(s) of the membrane.
Name:_________________
A
B
C
STATION #6
Comparing Plant and Animal Cells
http://www.buzzle.com/articles/plant-cell-vs-animal-cell.html
1. List three similarities between plant and animal cells.
2. Match the following terms with the correct category with which is belongs:
I. Plant cells
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
II. Animal Cells
III. Both plant and animal cells
Contains a nucleus
Larger in size
Contains ribosomes
Cell wall
Forms a cleavage furrow during cell division
Chloroplasts
Contains lysosomes
Contains mitochondria
Forms a cell plate in the center of the dividing cell
Central vacuole
STATION # 7
Potato ScenarioThe famous scientist Dr. Spuds Brown, came to our classroom to discuss osmosis,
diffusion and cell membranes. He set up an experiment involving potatoes. Dr. Spuds
used a beaker of distilled water and a beaker of concentrated salt solution. He cut cores
from a potato, measured the length of each, and then incubated one in the distilled water
and one in the salt solution.
Make some predictions:
1. The length of the core in water will: increase, decrease or remain the same
2. The water pressure in the cells of the core incubated in water will: increase,
decrease or remain the same
3. The turgor pressure in the core in the salt will: increase, decrease or not change
4. The concentration of water in the cells of the potato core incubated in the salt
solution will: increase, decrease or not change
5. In which core might the cells of the potato be undergoing plasmolysis? water, salt
Scan the code to see Dr. Spud’s data.
1. How accurate were your predictions?
2. Describe the experiment using the following terms: hypertonic, hypotonic,
osmosis, turgor pressure, and plasmolysis.
Spud’s Data
STATION #8
Comparing chloroplasts and mitochondria
http://www.youtube.com/watch?v=0N2yxaKsDYA&feature=relmfu
Watch the video and answer the following:
1. True or False: Both chloroplasts and mitochondria make ATP
2. List the main function of mitochondria.
3. What are the inner folds of the mitochondria called?
4. True or False: Plants also have mitochondria
5. Which cell would have more mitochondria: a heart cell or a skin
cell
6. Why are chloroplasts green?
7. True or False: Mitochondria and chloroplasts have their own
circular DNA.
8. Briefly state the endosymbiosis theory.
STATION #9
Blood Cells Diagram
http://chemistry.about.com/od/imagesclipartstructures/ig/Science-Clipart/Osmosis--Blood-Cells.htm
Red Blood Cell Osmosis ScenarioScan the code above to review the shape of the red blood cell.
Red Blood Cells are approximately 0.25% salt. Red blood cells are placed in a 2% salt
solution.
1.
2.
3.
4.
5.
Using colored pencils, draw a diagram of the blood cell and its surroundings
using one color for the water and a different color for the solute. (Include a key or
legend.)
Label the inside of the red blood cell as hypotonic, hypertonic or isotonic.
Label the environment of the red blood cell as hypotonic, hypertonic or isotonic.
Using the arrow, indicate which direction water will flow; inside the cell or out of
the cell.
Will the size of the red blood cell increase, decrease or stay the same?
STATION # 10
Read the information from the site and answer the following:
1. What organelle is used to remove excess water in protozoa?
2. Where do amoeba and paramecium live?
3. The word amoeba means _________________________.
4. A pseudopodia is a(n):
5. Tiny hairlike structures located on the surface of the cell are:
6. Mitosis is a type of a. movement b. cell division c. amoeba
7. How does an amoeba catch its food?
8. The Blepharisma is a protest related to the paramecium. It has cilia to help it
move. How would you classify the blepharisma?
Station #11
Instructions for this quest are found in the code.
STATION #12
At this station, you will log into one of your group members’ Edmodo account. After
clicking into the class (to the left), you will click on the APP icon at the top. Click on the
Animal Cell activity. When you have successfully completed the activity, take a picture
of the screen. You may attach your picture to a post to a direct message to me on
Edmodo.