2. a. At what rate does glucose enter a cell by passive diffusion alone? Estimate a typical cell as an ideal sphere with a diameter of 20 ?m. Remember that the surface area of a cell is 4?r2. The permeability coefficient (P=KD/x) for glucose is 3×10-8 cm/sec. For normal, steady-state […]

What is the name of the epithelial cells that make up the epidermis? -What is the cytoplasmic intermediate filament found in these epithelial cell junctions ? -What is the name of the junctions that links the intermediate filaments of the epithelial cell to the basal lamina? -What is the name […]

The normal pH range for systemic arterial blood is between 7.35 and 7.45. Any levels that drop below a pH of 7.35 is a condition known as acidosis. Any levels that rise above a pH of 7.45 is known as alkalosis. Acidosis can depress the central nervous system, which if […]

Q. A young entrepreneur is considering buying or leasing a Xerox machine for a photocopying business office. The cost of the Xerox machine is $24,000.the annual maintenance cost is $750. The likely annual revenue from photocopying is $5500. If he decides to lease the machine the annual cost is $4000 […]