The entire composition of the cell membrane in bacteria & eukarya, including bond types
What are two hydrophobic fatty acids and one phosphoric acid esterified to glycerol
100
This type of membrane protein constitutes 20-30% of the membrane proteins. It is soluble in water and some of this type of protein can be easily removed with changes in pH, temperature, etc.
What is a peripheral protein
100
These are found in eukarya and are rigid planar molecules and the association of these with the membrane serves to stabilize its structure and make it less flexible, what is the term for prokarya
What is a sterol, hopanoid
100
This type of facilitated diffusion uses pores for substances to pass through and shows some specificity
What is a channel
100
The two factors that determine the fluidity of the membrane
What is lipid composition and temperature
200
The ____ portion of the phospholipid points inwards towards eachother whereas the _____ portion of the phospholipid remains exposed to the aqueous environment or cytoplasm of the cell
What is the hydrocarbon chains (hydrophobic) and the hydrophilic glycerol phosphates
200
This type of protein includes lipoproteins which have a lipid tail on the amino terminus of the protein that serves to anchor one portion of the protein to the membrane
What is a peripheral protein
200
Lactose permease of E. Coli utilizes this type of transport
What is simple transport
200
This type of transport is represented linearly on a rate of solute entry vs external concentration of solute graph
What is simple diffusion
200
This option would allow your membrane to have a lower melting temperature: a membrane with long unsaturated fatty acid side chains, or a membrane with short unsaturated fatty acid side chains
What is a membrane with short unsaturated fatty acid side chains
300
The entire composition of the monolayer membrane in archaea
What is a diglycerol tetraether: 2 glycerols, 2 biphytanyl (C40 each) attached by ether bonds
Also can be thought of as 4 phytanyl (C20 each) divided into two couples and each couple is covalently bonded
300
This type of protein is not easily removed via changes in pH or temperature, and is water insoluble
What is an integral protein
300
This is the composition of the membrane spanning protein that aids in transport
What are 12 α helices that wind back and forth through the membrane forming a channel through which solute enters/exits the cell
300
This type of membrane transport contains high specificity
and is saturable, sometimes even at low [solute] in the environment
What is carrier-mediated diffusion
300
This is the site of many proteins involved in transport, bioenergetics, signaling and chemotaxis
What is the protein anchor?
400
The entire composition of the bilayer membrane in archaea
What is two glycerol diethers: 1 glycerol, 2 phytanyl (C20 each) attached by ether bonds
400
This type of protein is amphipathic, and is also known as an intrinsic protein
What is an integral protein
400
This is a prokaryote that lacks cell walls, & requires sterols to stabilize the membranes
What is a mycoplasma
400
This type of active transport uses chemical modification of solute as it is transported (modification uses energy) & involves a series of proteins
What is group translocation
400
Which of the following would be able to pass through the permeability barrior readily? H+, small fat soluble, small hydrophobic, amino acids, nucleic acids, water
What is small fat soluble, small hydrophobic & water
500
This type of membrane is extremely resistant to heat denaturation and is typically found in hyperthermophiles living in temperatures of over 80C
What is a diglycerol tetraether monolayer
500
This type of protein is also known as an extrinsic protein
What is a peripheral protein
500
This type of transport would have a net transport into the cell when [So] < [Si]
What is active transport
500
These two types of transport are driven by the concentration gradient & net transport into the cell occurs when [So] > [Si]
What is simple & facilitated diffusion
500
This function is useful for the generation and use of the proton motive force