deck_1357021

Question 2

Cell Membrane Components

Answer 2

Phospholipids, proteins, cholesterol

Question 3

Phospholipids

Answer 3

membranes are variously composed of these special lipids, they are amphipathic molecules with a hydrophobic and phillic end can assemble as micelle, bi-layer and liposome

Question 4

glycolipids

Answer 4

carbohydrate branches attached to exterior end of lipid

Question 5

glycoprotein

Answer 5

carbohydrate attached to the exterior end of a protein in the cell membrane

Question 6

Proteins

Answer 6

functional part of the membrane, there are 2 kinds of membrane proteins: Integral Membrane proteins and Peripheral membrane proteins

Question 7

Integral membrane proteins

Answer 7

regions of lipid sea, held in position

Question 8

Peripheral membrane proteins

Answer 8

located on the surfaces of the lipid sea usually on the cytoplasm side

Question 9

Kinds of membrane proteins

Answer 9

structural - give cell structural integrity, ECMchannels - allow for passive transport of molecule through membranetransporters - active transport of molecule along natural conc gradientpumps - active transport of molecule against concentration gradienttransducers - couple a membrane receptor to cytoplasmic enzymeenzymes - perform cellular work by catalyzing rxn

Question 10

Cholesterol

Answer 10

added agent involved in cell fluidity, amphipathis steroid, enhances cell membrane stability decreases permeability, helps with packing the phospholipids.

Question 11

Fluis Mosaic Model

Answer 11

protein and lipid distribution is assymetrical, membrane must be able to engage in recognition, transportation and communication.

Question 12

Membrane recognition

Answer 12

cellular adhesion, cellular interactions with prokaryotic organisms, cellular/tissue identity, cellular immunity

Question 13

cellular adhesion during growth and development

Answer 13

by cellular density/contact with cell beside it, the part that is recognizable is the stage-specific embryonic antigens (SSEA’s)

Question 14

cellular adhesion in mature tissues

Answer 14

cell adhesion molecules (CAM’s) are what join the cells together

Question 15

cadherin

Answer 15

link cells to identical cells

Question 16

integrin

Answer 16

links cells to the ECM

Question 17

cell junctions

Answer 17

adhering or tight junctions by ways of proteins

Question 18

cellular interactions with prokaryotic cells

Answer 18

certain bacteria have tiny protein threads, fimbri, to attack the host cell

Question 19

cellular binding during diapedesis

Answer 19

ability of WBC to bond to, and exit capillary lining linked to the display and interaction of special surface recognition molecules

Question 20

cellular/tissue identity

Answer 20

by what carbohydrates are attached can define the type of cells they are “blood typing”

Question 21

cellular immunity

Answer 21

cells immune systems express certain proteins on plasma membrane call human leukocyte antigens (HLA), these are used to present foreign material to other defender cells

Question 22

antigen presenting cells

Answer 22

HLA cell that put foreign material on outside of membrane for other defender cells to see and attack