A) crabby the crab lives in the ocean just off the east coast of the united states. one day, a young child catches Crabby and wants to take him home as pet. The child's family had a freshwater pound in their backyard, and the child plans to allow crabby to live in the pond. Using your knowledge of diffusion, osmosis, and tonicity, explain why the move to the freshwater pond will be deadly of crabby
B) Concisely describe the fluid mosaic model of the plasma membrane. Do not draw a picture. C) Consider the insulin-producing cells in the pancreas and innate immune cells such as macrophages.
Why are endocytosis and exocytosis important in these cells? which process is more important for each cell type? D) Why is a active transport necessary in living organisms?
what kinds of disorders could result from problems with active transport?
E) Explain 3 of the 6 major functions of membrane proteins.
5. A) A certain poison acts by binding to the enzyme ATP synthase, which catalyzed the formation of ATP. Binding of this poison causes the enzyme to become inactive. If excess ADP is added in the presence of this poison, the poison is no longer effective. What purpose does ADP serve in the example? What type of inhibitor is the poison? what evidence led you to this conclusion? What is the difference between an exergonic and endergonic reaction? what is the effect on free energy change and entropy of the system of each of these types of reactions?
6. Propose 3 ways that this pathway could be disrupted in patients with type 2 diabetes and suggest a way that one of these problems could be treated medically.