1. Which of the following lipids is negatively charged? a. PC b. PS c. PE d. SPH
ID: 316632 • Letter: 1
Question
1. Which of the following lipids is negatively charged?
a. PC
b. PS
c. PE
d. SPH
(i believe the answer is D but not sure)
7. Which of the following is not an example of an active transporter?
a) Na+ coupled glucose transporter
b) NaK pump
c) K+ channel
d) ATP-driven Ca2+ pump
8. The dynamics of lipid bilayers depend on
a) Temperature.
b) Lipid chemistry.
c) Bilayer composition.
d) All of the above.
9. In FRAP experiments, a faster fluorescence recovery implies a
a) Higher diffusion rate.
b) Lower diffusion rate.
c) Higher flip-flop rate.
d) Lower flip-flop rate.
Explanation / Answer
1)PS is negatively charged lipid.(b)
Phospholipid contain a negatively charged phosphate group and glycerol,It is hydrophilic
7) K+ channel is not an active transporter.(c)
8)All of the above.(d)
Dynamics of lipid bilayers depend on
Temperature, Lipid chemistry, Bilayer composition.
9 )Higher diffusion rate.(a)
Fluorescence recovery after photobleaching (FRAP) is a method for determining the kinetics of diffusion through tissue or cells.
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