ADH is released from the brain can affect adrenal glands. This type cell signaling is known is

Which of the following is false? Steroids do not require a G protein and second messenger. The average pH of blood is 7.4 Increased levels of AMP will cause an increase in enzyme activity A G protein links the first messenger with the second messenger.

Different cell types in the human body can respond in completely different ways to the same signalling molecules. What is the mechanism that allows this differential behaviour? Please keep brief - 3 sentences/dot points max.

A loss of function mutation in a gene encoding a SNARE protein would result in which of the following effects? оа. The anterior pituitary would be unable to release its hormones o b. Skeletal muscle cells, but not cardiac or smooth muscle, would lose their ability to contract O c. Neural cells would be unable to generate action potentials d. Neural cells would be unable to transmit action potentials via electrical synapses Neural cells would be unable to transmit action potentials via chemical synapses O e.