Cadherins share a property with the protein calmodulin, which is involved in transmembrane transport, as discussed in Chapter 11. In either case, both of these proteins: Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices directly regulate the activity of a membrane pump. bind free Ca2 ions. are directly associated with cell-cell adhesion. are secreted and associate with the ECM.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.