19. Indicate true (T) and false (F) statements below regarding ion channels in c

Question

19. Indicate true (T) and false (F) statements below regarding ion channels in cellular membranes. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTT. ( ) With patch-clamp recordings, it is possible to study ion transport through a single molecule of a channel protein. ( ) Cells that are not electrically excitable often lack gated ion channels in their plasma membrane. ( ) The aggregate current crossing a patch of plasma membrane represents the degree to which each individual channel is open at that time. ( ) Patch-clamp recordings have shown that any voltage-gated ion channel opens as soon as the membrane potential is altered. 19. Indicate true (T) and false (F) statements below regarding ion channels in cellular membranes. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTT. ( ) With patch-clamp recordings, it is possible to study ion transport through a single molecule of a channel protein. ( ) Cells that are not electrically excitable often lack gated ion channels in their plasma membrane. ( ) The aggregate current crossing a patch of plasma membrane represents the degree to which each individual channel is open at that time. ( ) Patch-clamp recordings have shown that any voltage-gated ion channel opens as soon as the membrane potential is altered. 19. Indicate true (T) and false (F) statements below regarding ion channels in cellular membranes. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTT. ( ) With patch-clamp recordings, it is possible to study ion transport through a single molecule of a channel protein. ( ) Cells that are not electrically excitable often lack gated ion channels in their plasma membrane. ( ) The aggregate current crossing a patch of plasma membrane represents the degree to which each individual channel is open at that time. ( ) Patch-clamp recordings have shown that any voltage-gated ion channel opens as soon as the membrane potential is altered.

Explanation / Answer

1 true

patch clamp techniques allows the single or multiple ion channels in cells, in which very fine pipette (0.5 micro meter) is used aginst the plasma membrane.

2 ans-False

ion channels are membrane protein complex which allows the transportation of small molecules of appropriate size,and charges to pass freely from the lipid bilayer of membrane.

3 ans-False

The aggregate current crossing of cell does not represent the degree to which each individual channel is open at that time but it reperesnts the total number of channels in its membrane.

4 ans-False

patch clamp recording technique used to isolate the patch of membrane electrically.

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