1 During apoptosis, which lipid is flipped from the cytosolic leaflet to the ext

Question

1 During apoptosis, which lipid is flipped from the cytosolic leaflet to the extracellular leaflet?

a PS

b PE

c SPH

d PC

2. A person who carries blood group O can donate blood to a person who carries

a Blood group A, but not to a person who carries blood group AB.

b Blood group AB, but not to a person who carries blood group A.

c Blood group O, but not to a person who carries blood group AB.

d Any of the three blood groups, A, AB or O.

3.The dynamics of lipid bilayers depend on

a Temperature.

b Lipid chemistry.

c Cholesterol concentration.

d All of the above.

4. During nerve conduction, inactivation of voltage-gated Na+channels is triggered by

a Opening of delayed rectifier K+ channels.

b Inactivation of delayed rectifier K+ channels.

c Reversal of membrane potential.

d Hyperpolarization of membrane potential.

5.. The action potential does not reverse direction on its own because

a The voltage-gated K+channels are in their open state.

b The voltage-gated Na+channels cannot transition directly from inactive to open states.

c The voltage-gated Na+channels are in their inactivated states.

d The delayed rectifier K+channels cannot transition directly from inactive to open states.

Explanation / Answer

1) During apoptosis PS phosphatidyserine Will be left from the cell membrane of inner leaflet to outer leaflet which will trigger the phagocytosis of apoptosis cell

2) answer 4 O group is called as auniversal donar and can donate blood to any person because they have no antibodies

So no reaction will account when blood transfused to other blood group person

3) all of the above

The lipid dynamics will be affected by change in Temperature due to change in concentration of lipids as well as cholesterol concentration

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