Red blood cell membranes are completely impermeable to sodium, potassium and chloride ions, however they are permeable to both water and urea. The concentration inside a red blood cell is 300mOsm and consists predominantly of sodium and potassium chloride. a) With the aid of diagrams, decide what would happen to […]

Biology Discussion Board I don’t have much money but really need help with this assignment “Cells and Cancer and Mitosis and Meiosis” Note: Online students, please respond to one of the following three bulleted items. • Listen to one of the following podcasts listed below: o NPR Podcast: Can healthy […]

Question 1How did the phrase “dumb jock” come to be? (This is a rhetorical question.) The phrase reflects two characteristics, intelligence and athletic prowess. Let us suppose that above average intelligence occurs in 25 out 100 children and superior athletic prowess occurs in 1 out 50 children. Using the rules […]

In a population of 50,000 diploid yeast cells (in this case the census and effective population sizes are identical) all cells have genotype A until a mutation (A-a) occurs, giving one copy of a. Alleles confer equivalent fitness. a. What is the probability that a will be fixed? b. How […]