Under resting membrane potentials:

Related Mcqs:

1. Cell membrane under resting conditions is impermeable to all the ions except_____________?

   A. Na+
   B. K+
   C. Cl-
   D. PO4-2

2. Normal resting membrane potential of a neuron is_____________?

   A. – 50 mv
   B. – 60 mv
   C. – 70 mv
   D. – 80 mv

3. Value of resting membrane potential is_____________?

   A. 0.03 V
   B. 0.05 V
   C. 0.07 V
   D. 0.09V

4. Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an ___________ process?

   A. Active
   B. Passive
   C. Diffusional
   D. None of these.

5. The heart is enclosed in a membrane called________?

   A. pleura
   B. pericardium
   C. peritoneum
   D. epithelium

6. Vacuoles are fluid filled sacs surrounded by a membrane called__________?

   A. tonoplast
   B. nuclear membrane
   C. cell membrane
   D. cell wall

   Submitted by: Muhammad Nawaz

7. The chlorophyll molecule is embedded in the core of thylakoid membrane which acts as___________?

   A. Hydrophilic
   B. Hydrophobic
   C. Both of these
   D. None of these

8. The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

   A. Deffusion
   B. Osmosis
   C. Active transport
   D. None of these

9. Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane?

   A. Change in membrane protein composition.
   B. Change in the solute composition of the cell membrane which prevents crystallization.
   C. Increase in proportion of unsaturated fatty acids.
   D. Development of heat shock proteins.

10. The membrane covering the lungs is a________?

    A. Pleura
    B. Pericardium
    C. Peritoneum
    D. Mesothelium

    Submitted by: Malik Asghar Hussain