One difference between tight junctions and dermatomes is that tight junctions:a. are regions where ...

One difference between tight junctions and dermatomes is that tight junctions:a.
   are regions where the plasma membrane from two neighboring cells are in actual contact.
  b. occur only in plants.
  c. involve connective microfilaments that traverse the space between adjacent cells.
  d. are anchored by microfilaments on the insides of the cell membranes of adjacent cells.
  e. contain a 24 nm space between two adjacent membranes.

Question 2

In cells that are constantly involved in secretion, an equivalent amount of membrane must be returned
  to the interior of the cell for each vesicle that fuses with the plasma membrane; if this does not occur,
  then what would happen?
  a. The ratio of cell surface would decrease, compared to cell volume.
  b. The cell surface would shrivel.
  c. The surface area would remain constant.
  d. The number of membrane receptor proteins would decrease.
  e. The cell surface will keep expand