Diffusion simulations



**IMPORTANT: You do not need to write the question, but please write your answers in complete sentences unless stated otherwise.

Cell Transport Web Quest – DAY 1 – CELL MEMBRANE

Website #1: Cell Membrane ()

• Play the animation to see an overview of the cell membrane.

• Step through the animation a SECOND time. As you do, complete question 1.

1. Draw the cell membrane and label ALL of the parts.

Website #2: Phospholipids ()

• At this point you have discovered that one of the major components of the cell membrane are phospholipids.

2. Draw a phospholipid. Label the hydrophilic and hydrophobic sections.

3. What happens to phospholipids when they are placed in water?

Website #3: Construction of the Cell Membrane

()

4. Click through the animation. **In your lab notebook – write the number and the description and then write the correct letter and word(s) on the line next to the description.

Website #4: Webquest Quia Quiz (Cell Membranes) ()

• Complete the Quia Quiz on the structure of the membrane. Secret word: day1

END OF DAY 1

Cell Transport Web Quest – DAY 2 - PASSIVE TRANSPORT

Website #5: Passive Transport ()

1. There are 3 types of passive transport – simple diffusion, osmosis, and facilitated diffusion. Write a definition to distinguish between the 3.

2. What do these types of transport have in common? What does passive transport mean?

Website #6: Diffusion ()

• Play the animation to see an overview of diffusion.

• Step through the animation a SECOND time. As you do, complete the following questions:

3. Molecules are in constant .

4. Complete the following picture on your paper, with an arrow, as shown in the animation:

Area of higher Area of lower

Concentration Concentration

Website #7: Osmosis ()

• Read through the website and complete the questions:

5. What is a hypertonic solution? Draw a picture of what happens to cell this type of solution.

6. What is a hypotonic solution? Draw a picture of what happens to cells in a hypotonic solution.

7. What is an isotonic solution? Draw a picture of what happens to cells in an isotonic solution.

8. Based on what you have read copy the following table into your lab notebook and complete it using the word bank provided: (Look up any word you do not know!)

Into the Cell

Out of the Cell

Into and Out of the Cell

Cytolysis (Swells & Pops)

Crenates (Shrinks)

Plasmolysis (Shrinks)

Turgor Pressure (Swells)

Stays the Same

Stays the Same

| |Does water move in or out? |Animal cell response? |Plant cell response? |

|Hypertonic | | | |

|Hypotonic | | | |

|Isotonic | | | |

Website #8: Passive Transport quia quiz ()

• Complete the Quia Quiz on passive transport. Secret word: day2

END OF DAY 2

Cell Transport Web Quest – DAY 3 - ACTIVE TRANSPORT

Website #9: Active Transport ()

• Read the Introduction.

1. What is the difference between active and passive transport? (there are 2 differences)

• Click the animation tab (at the top). Then click the step through box. Then click primary active transport.

• Play the animation. Click continue and play as you go to move forward.

2. What is the name of the membrane protein in the picture?

3. What does it move out of the cell? How much of this does it move?

4. What does it move into the cell? How much of this does it move?

5. What are the two characteristics of active transport?

6. What are examples of active transport?

Website #10: Endocytosis and Exocytosis ()

• Play the animation to see an overview of endocytosis and exocytosis.

7. What are the three types of endocytosis? What does each type transport?

8. What is the difference between endocytosis and exocytosis?

Website #11: Sodium-Potassium Pump () **For questions 9-12 write the question AND answer in your notebook.

1. The sodium-potassium pump functions to pump:

a. sodium ions out of the cell and potassium ions into the cell.

b. sodium ions into the cell and potassium ions out of the cell.

c. sodium and potassium ions into the cell.

d. sodium and potassium ions out of the cell.

e. sodium and potassium ions in both directions across the cell membrane.

2. What is the source of energy used to power the sodium-potassium pump?

a. Breakdown of ATP

b. Formation of ATP

c. transport of ATP by the pump

d. Breakdown of GTP

e. transport of GTP by the pump

3. During one cycle, the sodium-potassium pump binds and moves.

a. 1 Na+ and 2 K+.

b. 2 Na+ and 2 K+.

c. 2 Na+ and 3 K+.

d. 3 Na+ and 2 K+.

e. 3 Na+ and 3 K+.

4. The binding and release of sodium or potassium ions are due to conformational changes in the protein.

a. True

b. False

Website #11: Webquest Quia Quiz (Transport) ()

• Complete the Quia Quiz on transport. Secret word: day3

-----------------------

|1 |Allow ions and other polar molecules to pass through the membrane |A |Glycoprotein |

|2 |Only found in animal cell membranes |B |Channel Protein |

|3 |Span the entire membrane and serve as a receptor for the cell. |C |Pore Protein |

|4 |Found on the surface of the membrane, they help identify the cell |D |Fibrous (Integral) Proteins |

|5 |Allow water molecules to pass through the membrane |E |Cholesterol |

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download