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BIO REVIEW #2 - MEMBRANES & TRANSPORT | Questions And Answers Latest {} A+ Graded | 100% Verified
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BIO REVIEW #2 - MEMBRANES & TRANSPORT | Questions And Answers Latest {} A+ Graded | 100% Verified
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BIO REVIEW #2 - MEMBRANES & TRANSPORT | Questions And Answers Latest{2024- 2025} A+ Graded | 100% Verified
What are at least three types of "integral" proteins? - 1. Channel Protein
2. Carrier Protein
3. Cell Recognition Proteins
What is the fluid mosaic model? - Cells must be fluid and pliable, rigidity can be caused by cholesterol.
How is the plasma "selectively permeable"? - ...
What does "selectively permeable" mean? - Allows only certain substances into the cell while keeping
others out.
Which small, non-charged particles freely pass the membrane barrier? - Carbon dioxide, oxygen,
glycerol, and alcohol.
What is diffusion? - The movement of molecules from a higher to a lower concentration through the
membrane.
Why is diffusion "passive"? - Because it does not require energy and no work is performed.
What is osmosis? - The movement of water from a higher to a lower concentration through the
membrane.
What happens when a cell is placed in an isotonic solution. - Cells do not gain nor lose water.
What happens when a cell is placed in a hypotonic solution. - Cells swell or even burst.
What happens when a cell is placed in a hypertonic solution. - Cells shrink or shrivel.
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