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Title: Campbell's biology, chapter 7- cellular membrane
Description: These are notes taken from the foundations of Biology lecture on the cellular membrane. (college)
Description: These are notes taken from the foundations of Biology lecture on the cellular membrane. (college)
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LECTURE CHAP 7
*structure of large biological molecules, cisterns isomers, endomembrane system of cell, concentration/
solution, chemical equilibrium
...
middle is hydrophobic and ends are hydrophilic
...
• peripheral proteins- hydrophilic
...
phosphate is negative and proteins is positive
...
components of mosaic model
- microfilaments
- carbohydrates
- glycolipid
- glycoprotein
- collagen
fluidity
• phospholipid (un)saturated- unsaturated make it more fluid because phospholipids
cannot be close together
...
• cholesterol- acts as a buffer
transport across membrane
passive transport
- no energy input required
- potential energy
- concentration gradient (difference of concentration between two sides of membrane)
...
- lipids can pass through membrane
- can be very slow for long distances
1
...
facilitated diffusion
- uses channel proteins and carrier proteins that facilitate the movement of molecules
across
Title: Campbell's biology, chapter 7- cellular membrane
Description: These are notes taken from the foundations of Biology lecture on the cellular membrane. (college)
Description: These are notes taken from the foundations of Biology lecture on the cellular membrane. (college)