Assignment: Environmental Issues and the Industrial Revolution The Industrial Revolution, which began in the eighteenth century, has had an ongoing influence on society as well as the relationship between humans and their environment. With the onset of industrialization came the drastic increase in urbanization, setting up of factories in places […]

A 40-year-old male who was seropositive for HIV experienced abdominal pain, fatigue, and low-grade fever (38°C) for 2 weeks. A chest X-ray examination revealed lung infiltrates. Gram and acid-fast stains were negative. A viral culture revealed the cause of his symptoms: a large, enveloped polyhedral virus with double-stranded DNA. What […]

Biology Discuss these questions: 1. Review this article, Model Virus Structure Shows Why There’s No Cure for Common Cold, and discuss why most people recover quickly from the common cold but once infected with the chicken pox virus, they have it for life. In addition to the chicken pox virus, […]

Both vasopressin and the renin-angiotensin-aldosterone system effect a rise in blood pressure in response to specific signals. In other words, at least one of the major effects of these hormones is the same. What might be the adaptive advantage of having two rather than one system involved in maintaining high […]