The secondary messenger cyclic AMP (cAMP) is involved in many different signaling pathways, including the G protein-coupled receptor (GPCR) pathway. Which of the following describes an advantage of using cAMP as a secondary messenger in cell signaling? A) It conserves energy because cAMP can be converted to ATP.
B) It increases signaling specificity because protein kinase A, the direct effector of cAMP, has few substrates.
C) It prolongs the signal because cAMP is chemically stable and persists for a long time after ligand dissociation.
D) It amplifies the signal because one molecule of activated adenylyl cyclase can produce many molecules of cAMP.

Interpret the model. a three-part model with black right-arrows between the parts. left part: a large green apple-shaped component with a w-shaped indentation centered on top. a small blue apple-slice shape sits above the left indentation and an arrow points from the shape to the indentation. a small purple apple-slice shape and arrow sit above the right indentation and an arrow points from the shape to the indentation. middle part: a large green apple-shaped component with a square indentation centered on top. sitting in the left side of the indentation is a blue apple-slice shape with a flat bottom, fused to a purple apple-slice shape with a flat bottom on the right side of the indentation. right part: a large green apple-shaped component with a w-shaped indentation centered on top. an up-arrow is centered above the indentation pointing to a fused blue and purple apple-slice-shaped flat-bottom component sitting above the indentation. assigne "true" or "false" to the end of each statement. the model shows a shape change occurring in the enzyme after the substrate is bound in the active site. t/fthere are two products in this model. t? f there are three substrates in this model. t/f the model shows two different enzymes. t/f

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

What type of plant is good for a bioassay and where can i buy it? i only have a month.