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 […]

Question: A Pseudoephedrine is a nasal decongestant that is sold only behind the pharmacy counter (limited quantity per month) with a valid identification. What is your opinion on this OTC drug sales being so restrictive? How does this affect patient care and how does it positively affect drug abuse? Question […]

Some proponents of creation science draw upon several areas of inquiry including geology and biology to support their claims that the Earth and the life on it were created between 6000-10,000 years ago. For example, they point to continental drift and the Grand Canyon as evidence for the great flood […]

In a generalized transduction experiment, phages are collected from an E. coli donor strain of genotype cys+ leu+ thr+ and used to transduce a recipient of genotype cys- leu- thr-. Initially the treated recipient populations placed on a minimsl medium with leucine and threonine. Many colonies are obtained. a) What […]