Biology H - Mr.Willets
Cell Transport Review
1)Homeostasis can be defined as being ____________________________ (2 words)
2) What part of the cell maintains homeostasis for the cell? _______________________________
3) Define diffusion_________________________________________________________________
_________________________________________ Osmosis is a subset of diffusion. Explain what that means (if you don't know what a subset is, then just define osmosis) ______________________________
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4) What are the factors that determine whether or not a particular type of molecule can pass through the cell membrane? _____________________________________________________________________
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5) Why is glucose stored as glycogen? ___________________________________________________
6) A is isotonic to B. What does that mean? _______________________________________________
A is hypotonic to B. What does that mean? ________________________________________________
A is hypertonic to B. What does that mean? _______________________________________________
7) Using one of the three "tonic" words, describe how lymph compares to Ringer's solution
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8) In what way are the kidneys of a fish similar to the contractile vacuole of an ameba?
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9) What is cytolysis? _________________________________________________________
10) Why is turgor pressure a good thing for plant cells? ______________________________________
Why is cytolysis not a danger for plant cells? ______________________________________________
11) Loss of turgor in plants leads to _____________________
12) Salt curing works because the salt creates a ______________________ solution which causes bacteria or mold cells to _______________water. These cells would shrivel up and die. This is called ___________________________
13) How does gargling with salt water help a sore throat?
14) Protein molecules in the cell membrane that help transport materials in or out of the cell are called _________________proteins.
If these proteins merely speed up diffusion, the process is called ________________________ diffusion. Since no cell energy is used, this is ___________________ transport.
15) Other membrane proteins can create ______________channels. Each allows different _________ into or out of the cell. If these channels have "____________", they can open and close. Again, since the cell uses no energy when these function, it is ____________________ transport.
16) Another kind of membrane protein is called membrane _______________. These can move molecules from areas of __________________________ to areas of _________________________ In other words, they cause molecules to move against the _______________________________ This requires that the cell use energy and therefore it is an example of _______________ transport. An example of this is the
______________________ pump which is needed for ___________and ____________ cells to work.
17) What names are given to the transport of large particles or large amounts of material in or out of the cell membrane? _________________________ and _______________________ Which one brings these materials into the cell? __________________________
18) Since these require the cell to use energy, they are both a type of ___________________________
19) What cells in your body use phagocytosis? ___________________