The Biology Project > Cell Biology > Cell Signaling > Problem Set

Cell Signaling Problem Set

Problem 11: Gap Junctions

Direct cellular connections such as gap junctions in animal cells and plasmodesmata in plant cells permit:

A.	adjacent cells to adhere strongly to each other.
B.	second messengers produced in one cell to rapidly diffuse into and stimulate events in surrounding cells. Yes, communication between cells through gap junctions ( animal cells) and plasmodesmata (plant cells) is very important in biology. The size of the opening between membranes is very small and would not permit enzymes or genetic information to move between cells.
C.	adjacent cells to form a water-tight barrier between their membranes.
D.	protein kinases to flow between cells, coordinating cellular responses in a tissue.
E.	the rapid exchange of genetic information between adjacent cells.

The Biology Project > Cell Biology > Cell Signaling > Problem Set