MCB 150 Midterm: Exam 1 Review Session

185 views4 pages

For unlimited access to Study Guides, a Grade+ subscription is required.

REVIEW SESSION EXAM 1
Asymmetry
Two leaflets do not need the same number of the kind of phospholipids
Different membranes can have different compositions
DOES NOT MEAN that the leaflets have a different total number of
phospholipids
MEMBRANES NEED TO HAVE THE SAME TOTAL NUMBER OF
PHOSPHOLIPIDS
Biological membranes need to have the same total numbers on each side
Membrane proteins - IF I WERE TO REMOVE THE PROTEIN, WOULD I
DISRUPT THE INTEGRITY OF THE MEMBRANE? If yes, then peripheral
protein
Integral - would disrupt the integrity of the membrane if you took these
away
Transmembrane - amino acids span both leaflets
Multipass transmembrane proteins = go back and forth
Amino acids inside the membrane are hydrophobic
What are the forces that make the transmembrane proteins
stay in the same place?
Hydrophobic interactions and resulting van der waals
forces
Membrane associated - enter one leaflet and then come out the
same leaflet - do not make it to the other leaflet
Amino acids inside the membrane are hydrophobic
Lipid linked proteins - none of them go into membrane. Covalently
linked to lipid molecules.
Pull hair out of scalp analogy
Peripheral - loosely (noncovalent) associated with biological membrane.
Resting on integral protein.
Easily dissociable.
NOT WEAK.
not part of the integrity of protein.
Bonds
Not covalent (no disulfide), so this means H bonds,
hydrophobic, van der waals, ionic
30. During a research excursion to study volcanoes in the South Pacific, you are
surprised to discover a previously unknown single-celled life form in an
environment of high heat, high pressure, and no oxygen. Without doing any
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows page 1 of the document.
Unlock all 4 pages and 3 million more documents.

Already have an account? Log in

Get access

Grade+
$10 USD/m
Billed $120 USD annually
Homework Help
Class Notes
Textbook Notes
40 Verified Answers
Study Guides
1 Booster Class