Your SlideShare is downloading. ×
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Homeostasis Intro.Doc
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Homeostasis Intro.Doc

462

Published on

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

  • Be the first to like this

No Downloads
Views
Total Views
462
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Homeostasis Stable internal condition
  • 2. Three requirements of living things
    • Exchanging gases (CO2 out; O2 in)
    • Taking in water, minerals, and food
    • Eliminating wastes
    • These tasks require molecules to move through the cell membrane.
  • 3. Exchanging gases (CO2 out; O2 in)
    • Taking in water, minerals, and food
    • Eliminating wastes
    • These tasks require molecules to move through the cell membrane.
  • 4. Molecule movement through membrane
    • Passive transport
      • No energy used by the cell
      • occurs naturally
    • Active transport
      • Requires energy by the cell to move molecules
  • 5. Three functions of cell membrane
    • Separate contents of cell from its surroundings
    • Controls movement of materials into and out of cell
    • Interacts with the environment surrounding the cell
  • 6. Cell Membrane http://www.wisc-online.com/objects/index_tj.asp?objID=AP1101
  • 7. Diffusion
    • Movement of molecules from a region in which they are highly concentrated to a region in which they are less concentrated.
    • It will continue until the system reaches equilibrium, which means the molecules are randomly distributed throughout the system.
    • http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html
  • 8. Equilibrium
    • Static- occurs when there is no action taking place
    • Dynamic-occurs when two opposing actions occur at the same rate but in opposite directions
  • 9. Factors of diffusion
    • Amount of kinetic energy (temperature)
    • Size of the molecule
      • Smaller molecules will move faster than larger ones
    • Charges on the molecues
    • Nature of material molecules are moving through
  • 10. Molecules permeable to cell membrane
    • Small molecues like:
      • CO2
      • O2
      • H2O
    • More oxygen would move into the cell then out if there is more oxygen outside the cell

×