1. Title: Biology 11/10/06 Objectives: Class Topics
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Title: Biology 11/10/06
Objectives:
To complete the eggsperiment, assess knowledge gained about passive transport and learn about active transport.
Class Topics
Hand in W.S. “Homeostasis and transport” before the bell rings
Please do not hand in the lab “Eggsperiment”
Chapter 4 Quiz 1
Notes – Chapter 4
Active Transport
“Man’s mind stretched to a new idea never goes back to its original dimensions.”
Oliver Wendell Holmes
Friday, June 28, :31 AM

2. Miscellaneous Do not assume I will be available for help after school
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Miscellaneous
Do not assume I will be available for help after school
Before school I will still be available
If I’m not in my room, check other places!
I will be available during homeroom
Check with me about after school time
Review times can be arranged ahead of time

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Eggsperiment
Determine a range for the percentage of water and the percentage of solute in your egg.
Explain how you determined this
Write a description of how you could find the exact percentage of water and solute in your egg.
Hand in the ‘Eggsperiment’

4. Class Assignments Eggsperiment 11/10/06
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Class Assignments
What
By When
Eggsperiment 11/10/06
W.S. “Homeostasis and transport” 11/10/06
Chapter 4 Quiz 1 11/10/06
W.S. 4.2 (DR/Quiz) 11/14/06
Due this class period
Due next class period
Due in the future

5. Grade Sheet 1A – SR p. 61 - 5 pts Measurement W.S. – 10 pts
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Grade Sheet
1A – SR p pts
Measurement W.S. – 10 pts
3A SR p. 42 – 6 pts
4A – SR p. 47 – 5 pts
2A – Measurement W.S. – 10 pts

6. Postquiz Activities Hand in quiz Pick up “Active Transport” handout
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Postquiz Activities
Hand in quiz
Pick up “Active Transport” handout
Read 81-86

7. Ion Channels (a type of facilitated diffusion)
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Ion Channels (a type of facilitated diffusion)
Transport proteins have polar channels for the important ions to pass
Na+, K+, Ca2+, and Cl-
Fig 3
Used in maintaining electrical charge or nerve cells

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Active Transport
Using energy to move particles across the cell membrane - through an transport protein (pump)
Usually against the concentration gradient - like going up a hill
Ex. glucose into liver and muscle cells for storage
from a low concentration in the bloodstream to a high concentration in the cells

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11. Sodium-Potassium Pump figure 5
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Sodium-Potassium Pump figure 5
Found in nerve cells
Pumps 3 Na+ out of the cell and 2 K+ into the cell
Both against their concentration gradient

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13. From: http://www.accessexcellence.org/RC/VL/GG/passActiveTrans.html
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From:

14. Bulk Transport Also known as cytosis
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Bulk Transport
Also known as cytosis
Uses cell energy (active transport)
Moving large particles - larger than integral proteins - into or out of the cell
Endocytosis – into the cell
Exocytosis- out of the cell

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From:

17. Exocytosis Excretion Secretion release waste release products
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Exocytosis
Excretion
release waste
Secretion
release products
enzymes, carbohydrates, or hormones made by the cell

18. Membrane Receptor Proteins
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Membrane Receptor Proteins
Signal molecules bind to receptor proteins and causes a change in the cell
Changes in permeability
Open ion channel
Second messengers
Activates another protein inside the cell
Enzyme action
Speeds up a reaction (heroin)

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