How do the lipoproteins ldl and hdl influence heart disease risk? a. hdl are affected by the amount of cholesterol we eat in our diet. b. hdl play an important role in scavenging cholesterol from the tissues for disposal. c. ldl are much lighter in weight since they do not contain as much cholesterol to take to the cells. d. ldl benefit the heart by transporting cholesterol to the tissues and away from blood. e. hdl transport dietary fat to the liver and keep fat from being stored in the liver?

Does masterbation affect height growth or loss of growth hormone?

As studied this week in the cell cycle, we saw how a cell moves through its life with a plan. as you transition from a student at uma to a valued member of your chosen career field, what will you put into place in your life to manage and to fit the new responsibilities of your career into your current life?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.