PHYSIO (INB 365s) UNIT 1 SQUARECAP & DISCUSSION

squarecap questions plus highlights from discussion to have memorized

choose the correct statement about glucose transport through GLUT4

it’s active transport

no energy required

saturation could not occur bc it is a passive transport

concentration gradient is the energy source

ATP is required

concentration gradient is the energy source

(reasoning: it’s not active, no ATP required, there is energy needed, saturation could not occur not bc it’s passive but bc there’s no binding sites since it’s a channel protein)

choose the NOT correct statement about the facilitated diffusion

no energy required

increases in the surface area increases the diffusion rate

concentration gradient is the energy source

glucose moving through GLUT is an example

all above are correct

no energy required

(reasoning: there is energy needed - in this case it’s the concentration gradient)

give the relative intra-vs-extracellular concentrations of glucose, Na+, K+, and Ca2+ (higher outside or inside)

glucose is higher outside the cell

Na+ is higher outside the cell

K+ is higher within the cell

Ca2+ is higher outside the cell

give the relative intra-vs-extracellular concentrations of O2, CO2, H2O

O2 is higher outside the cell

CO2 is higher within the cell

H2O is about equal within & outside