#Question id: 2254
#Unit 2. Cellular Organization
If the intracellular [Ca2+] is 10−7 mol/L and the extracellular [Ca2+] is 2 × 10−3 mol/L, at what potential difference across the cell membrane will Ca2+ be at electrochemical equilibrium?
#Question id: 2255
#Unit 2. Cellular Organization
Following statements are regarding to the Na+/K+ ATPase maintains the intracellular Na+ and K+ concentrations in animal cells. Which of the following statement is incorrect?
#Question id: 2256
#Unit 2. Cellular Organization
Match the following inhibitors (Column I) with their effect (Column II).
|
Column I |
Column II |
|
A. A23187 |
I. endoplasmic reticulum Ca2+ ATPase inhibitor |
|
B. valinomycin |
II. Na+/K+ ATPase inhibitor |
|
C. thapsigargin |
III. K+ ionophore |
|
D. ouabain |
IV. Ca2+ ionophore |
#Question id: 2257
#Unit 2. Cellular Organization
Match the following property (Column I) with the transport mechanism (Column II).
|
Column I |
Column II |
|
A. Facilitated Transport |
i. Requires specific protein |
|
B. Active Transport |
ii. Solute transported against its gradient |
|
C. Cotransport |
iii. Coupled to ATP hydrolysis |
|
iv. Driven by movement of a cotransported ion down its gradient |
#Question id: 10530
#Unit 2. Cellular Organization
The transfer of a lipid molecule across a bilayer, a process termed:
#Question id: 10531
#Unit 2. Cellular Organization
Flippases catalyze translocation of the aminophospholipids: