Biology I:  Homeostasis and Transport (Part 1) Mr. Nettles
Agenda – Tuesday, Sept. 13, 2011 <ul><li>Warm-Up (7 min) </li></ul><ul><li>Today’s Agenda (3 min) </li></ul><ul><li>Lesson...
Warm-Up (Bonus!!) <ul><li>Which molecules store and transmit genetic information? </li></ul><ul><li>a) lipids, b) proteins...
Warm-Up (Bonus!!) <ul><li>Which molecules store and transmit genetic information? </li></ul><ul><li>a) lipids, b) proteins...
Today’s Objectives <ul><li>I will define:  homeostasis, semi-permeable, concentration, and equilibrium . </li></ul><ul><li...
Homeostasis <ul><li>Cells  must maintain a stable internal environment . </li></ul><ul><ul><ul><ul><li>having the right am...
Think!! <ul><li>What does the cell membrane do? </li></ul>
Moving Across the Cell Membrane <ul><li>The cell membrane is  semi-permeable  meaning  some things can go across and other...
What’s happening in this picture? semipermeable
Equilibrium <ul><li>Equilibrium: </li></ul>Both sides are equal Nature wants equilibrium!
Passive Transport <ul><li>The movement of materials in and out of the cell  without using energy  is called  passive trans...
Diffusion <ul><li>Molecules  move from areas of high concentration to areas of low concentration. </li></ul><ul><li>Molecu...
Think!! <ul><li>When is equilibrium reached? </li></ul>
Facilitated Diffusion <ul><li>Diffusion that  involves a protein channel or carrier </li></ul><ul><ul><li>Does NOT use ene...
Wrap-Up <ul><li>What is homeostasis? </li></ul><ul><li>True or False?  </li></ul><ul><li>Passive transport is the moves ma...
Review:  Biomolecule  Bingo <ul><li>This is a chance to earn 5% points of Friday’s Quiz!! </li></ul><ul><li>Listen careful...
Upcoming SlideShare
Loading in...5
×

Homeostasis and transport (part 1)

968
-1

Published on

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
968
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
11
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Homeostasis and transport (part 1)

  1. 1. Biology I: Homeostasis and Transport (Part 1) Mr. Nettles
  2. 2. Agenda – Tuesday, Sept. 13, 2011 <ul><li>Warm-Up (7 min) </li></ul><ul><li>Today’s Agenda (3 min) </li></ul><ul><li>Lesson (25 min) </li></ul><ul><li>Wrap-Up (5 min) </li></ul><ul><li>Review- Biomolecules (15 min) </li></ul>
  3. 3. Warm-Up (Bonus!!) <ul><li>Which molecules store and transmit genetic information? </li></ul><ul><li>a) lipids, b) proteins, c) nucleic acids, d) carbohydrates </li></ul><ul><li>Antibodies are composed primarily of amino acids. In which class of biomolecules would antibodies belong? </li></ul><ul><li>a) lipids, b) proteins, c) nucleic acids, d) carbohydrates </li></ul><ul><li>Which cell structures cause the outer surface of the endoplasmic reticulum to appear rough? </li></ul><ul><li>a) ribosomes, b) proteins, c) the mitochondria, d) the Golgi </li></ul>
  4. 4. Warm-Up (Bonus!!) <ul><li>Which molecules store and transmit genetic information? </li></ul><ul><li>a) lipids, b) proteins, c) nucleic acids , d) carbohydrates </li></ul><ul><li>Antibodies are composed primarily of amino acids. In which class of biomolecules would antibodies belong? </li></ul><ul><li>a) lipids, b) proteins , c) nucleic acids, d) carbohydrates </li></ul><ul><li>Which cell structures cause the outer surface of the endoplasmic reticulum to appear rough? </li></ul><ul><li>a) ribosomes , b) proteins, c) the mitochondria, d) the Golgi </li></ul>
  5. 5. Today’s Objectives <ul><li>I will define: homeostasis, semi-permeable, concentration, and equilibrium . </li></ul><ul><li>I will describe three types of passive transport . </li></ul>
  6. 6. Homeostasis <ul><li>Cells must maintain a stable internal environment . </li></ul><ul><ul><ul><ul><li>having the right amount of water and nutrients </li></ul></ul></ul></ul><ul><ul><ul><ul><li>getting rid of wastes </li></ul></ul></ul></ul><ul><ul><ul><ul><li>staying at the right temperature </li></ul></ul></ul></ul><ul><li>Homeostasis = the ability to maintain a stable internal (inside) environment </li></ul>
  7. 7. Think!! <ul><li>What does the cell membrane do? </li></ul>
  8. 8. Moving Across the Cell Membrane <ul><li>The cell membrane is semi-permeable meaning some things can go across and others can’t. </li></ul><ul><li>Concentration = how crowded a certain location is with molecules </li></ul>
  9. 9. What’s happening in this picture? semipermeable
  10. 10. Equilibrium <ul><li>Equilibrium: </li></ul>Both sides are equal Nature wants equilibrium!
  11. 11. Passive Transport <ul><li>The movement of materials in and out of the cell without using energy is called passive transport . </li></ul><ul><li>There are 3 types of passive transport: </li></ul><ul><ul><li>Diffusion </li></ul></ul><ul><ul><li>Facilitated diffusion </li></ul></ul><ul><ul><li>Osmosis </li></ul></ul>
  12. 12. Diffusion <ul><li>Molecules move from areas of high concentration to areas of low concentration. </li></ul><ul><li>Molecules move to areas that are less crowded. </li></ul>
  13. 13. Think!! <ul><li>When is equilibrium reached? </li></ul>
  14. 14. Facilitated Diffusion <ul><li>Diffusion that involves a protein channel or carrier </li></ul><ul><ul><li>Does NOT use energy </li></ul></ul>
  15. 15. Wrap-Up <ul><li>What is homeostasis? </li></ul><ul><li>True or False? </li></ul><ul><li>Passive transport is the moves materials in and out of the cell using energy. </li></ul><ul><li>List the three types of passive transport. </li></ul>
  16. 16. Review: Biomolecule Bingo <ul><li>This is a chance to earn 5% points of Friday’s Quiz!! </li></ul><ul><li>Listen carefully to the “bingo clues” and write down the name of the biomolecule related to the clue. </li></ul><ul><li>Carbohydrates, Lipids, Proteins, Nucleic Acids </li></ul>
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×