Friday, October 3, 2014
Friday, Oct 3
Period C- Please check out the textbook on-line. You will log on using general username pbiology17. You will search for Chapter 3 Cell Structure and Function, 3.3. Cell Membrane. Please check out the Presentation to Slide 6. Please comment on this post about one thing you thought was interesting about this presentation. Your post must be in by Monday 10/6.
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Membranes are stable enough to keep material in the cell easily.
ReplyDelete- Brett Riley
Passive transport is transport that does not use the cell’s energy. It relies on diffusion due to a concentration gradient. Grace Watts
ReplyDeleteA phospholipid is a molecule composed of three basic parts:
ReplyDelete*a charged phosphate group
*glycerol
* two fatty acid chains
One thing I learned through watching the presentation is that Polar ions do not pass through the cell membrane as easily as non-polar ions.
ReplyDeleteI learned that polar ions can not pass through the cell membrane as easily as non polar molecules.
ReplyDeletethe diffusion of one substances in generally independent of the diffusion of another substance.
ReplyDeleteDiffusion is a form of passive transport used throughout the cell. Diffusion is used to achieve equilibrium of a certain molecule on the inside and outside of a cell. Molecules diffuse independently, so they can diffuse in the opposite direction of another molecule.
ReplyDelete-Ashley H.
Polar molecules and ions are repeled.
ReplyDeletei learned how things enter and leave the cell through the cell membrane
ReplyDeleteDiffusion is a form of passive transport used throughout the cell.
ReplyDeleteThis comment has been removed by the author.
ReplyDeletei thought it was interesting because it said the outside of the cell membrane has a higher concentration gradient than the inside.
ReplyDeletei learned that polar icons have more trouble passing through the cell membrane than non polar molecules
ReplyDeleteThat cells must reach equal Librium and with taken or expel minerals to do so
ReplyDeletecarbon does not mix with oxygen
ReplyDeleteI thought it was cool how they gave you activities rather than just sitting there listening, we can play with oxygen and carbon dioxide molecules!
ReplyDeleteI agree!
Deletenon polar irons enter the cell membrane easier than polar irons
ReplyDeleteDiffusion is a form of passing through the cell.
ReplyDeleteI learned that Carbon Dioxide & Oxygen can diffuse in opposite directions at the same time.
ReplyDeleteI learned that the cell membrane is made of phospholipid bilayers .
ReplyDelete