transporters IL

Question 1

the membrane is selectively

Answer 1

permeable

Question 2

water soluble substances ___ dissolve in lipid bilayer but some can cross the cell membrane

Answer 2

cannot

Question 3

can red blood cells, large proteins pass through the membrane

Answer 3

no

Question 4

integral/ intrinsic/transmembrane proteins

Answer 4

ion channels transport proteins, these span the entire cell membrane or are embedded in the membrane

Question 5

where are peripheral or extrinsic proteins located

Answer 5

one side of cell membrane, intra or extracellular side ex ankyrin

Question 6

types of membrane transport

Answer 6

simple diffusion
facilitated diffusion (carrier mediated)
primary active transport (carrier mediated)
secondary active transport (carrier mediate)
osmosis

Question 7

all forms of carrier mediated transport have 3 common features

Answer 7

chemical specifity sterospecifity
competition
saturation

Question 8

at high solute concentrations the rate of transport reaches a

Answer 8

plateau

Question 9

Transport maximum Tm is defined as the maximum rate at which the substance can be reabsorbed

Question 10

uniport

Answer 10

transport of a single substance

Question 11

symport

Answer 11

transport of more than one substance in the same direction aka cotransport

Question 12

antiport

Answer 12

transport of more than one substance in opposite directions aka countertransport or exchange

Question 13

facilitated diffusion
passive transport

Answer 13

along concentration gradient facilitated by a carrier protein in the cell membrane

Question 14

examples of facilitated diffuson

Answer 14

intestinal lumen
intestinal epithelial cell
blood

Question 15

primary active transport

Answer 15

transport of solutes against the concentration gradient

Question 16

sodium potassium ATPase (Na+/K+ pump) is which transport

Answer 16

primary active transport

Question 17

other examples of primary active transport

Answer 17

Ca2 ATPase
H+/K+ ATPase

Question 18

secondary active transport

Answer 18

transport of a solute is coupled with sodium transport and transported against its gradient

Question 19

inhibiting Na+/K+ pump stops this transport

Answer 19

secondary active transport

Question 20

example of secondary active transport

Answer 20

glucose transport in Gut

Question 21

T or False
transport of glucose depends on the transport of sodium down its concentration gradient
this is set up by

Answer 21

T
Na+/K+ ATPase pump

Question 22

example of osmosis

Answer 22

movement of water from intestinal lumen into blood when solutes move in the same direction, movement of water from tubular fluid of the kidney into blood when solutes move in the same direction