Q1. In the 1980’s it was the slogan, “Reduce, Reuse and Recycle” and now it is “Go Green.” Consider the Reusable Grocery Bags sold in markets everywhere. What are the pros and cons that you see in this latest trend? Give examples of potential environmental impact. Give at least two […]

Malformations in the lymphatic system, called lymphangiomas, are overgrowths of the one-way lymph channels. Rarely, in infants and children, these channels grow abnormally large and cause deformity or death if the overgrowth chokes off a child’s airway or interferes with other aspects of heart and lung function. The deformity tends […]

a. Two arrestin genes (? -arrestin 1 and 2) have been characterized and are expressed ubiquitously. Over the past several years, the development of knockout mice in which the genes for ?-arrestin 1 and 2 have been inactivated have greatly aided the study of the physiological and cellular roles of […]

On a particular microscope, the numerical apertures of the condenser and medium power objective lenses are 1.25 and 0.25, respectively. You are supplied with a filter that selects a wavelength of 520nm. What is the limit of resolution on this microscope and will you be able to distinguish two points […]