Question

4. how are receptors and transport proteins similar 5. when a person becomes dehydrated due to loss of fluids and solutes saline solution is infused into the bloodstream by medical personnel why is the saline solution used instead of pure water

Answer 1

Answer: 4. They are similar by their function, receptors act as the receiver and both the sender of information.

Protein channels are needed to transport substances because it accelerates the transport process. Very few substances enter or leave cells without being attached to a transport protein. Different types of substances require different types of proteins to transport them. Protein channels transport water or ions downwards and ATP-powered pumps transport molecules or ions upwards. ATP generates energy to transport the molecules upwards. 5. Pure water would be hypotonic relative to the contents of blood cells and could cause the cells to burst.

Step-by-step explanation: