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Summary Membrane Structure and Function Introductory Biology Study Notes (Handwritten)

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Membrane Structure and Function for Introductory Biology for Science Majors Are you a science major aiming to master biology concepts? My "Membrane Structure and Function" handwritten notes are designed to help you grasp fundamental chemistry topics crucial for your studies. This PDF include...

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MEMBRANE STRUCTURE
AND FUNCTION

, MEMBRANE STRUCTURE AND FUNCTION

membranes (phospholipid bilayers) create compartments in cells and separation between

cell and environment

↳ make
multiple simultaneous chemical processes possible
-
> "division of labor" makes

all more efficient and adaptable


membrane components in cell also include protein molecules (partially or
completely
embedded in membrane



cholesterol is lipid in animal plasma membrane
(analogous steroids for plant membrane

helps
modify fluidity of membrane over
range
of temperatures



phospholipids =
ampiphatic molecules


hydrophobic hydrophilic region
↳ have and


form
bilayer in
water
reason
why they

polar molecules (outside of all
hydrophilic polar heads associate with water


get away from polar water
hydrophobic nonpolar tails associate with each other
↳ -




similar in of molecules makes them
membranes
very types they contain -




interchangeable and makes
fusing together easy
might differ-integral proteins (are

embedded scattered
proteins that are
through
pattern from membrane
it in
irregular ,
can
vary
membrane to

Peripheral Proteins side of membrane
proteins that
only occur of
Cytoplasmic
=




most
integral proteins go through
whole membrane , some
only protrude from
one side

↳ associates with of membrane
hydrophobic core
region nonpolar core


protrude from both surfaces of polar
hydrophilic bilayer
ends -
interact with

water molecules

↳ held in
by fibers exoskeleton and
place attachements to protein on inside
by
:




- have ECM contains protein
outside
by extracellular matrix
only animals ,




fibers and
large , complex
Carbohydrates

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