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, […]

Question 1. When the semilunar valves are open, is the following statement true or false? The tricuspid and bicuspid valves are open. TRUEFALSE Question 2. When the semilunar valves are open, is the following statement true or false? The atria contract.TRUEFALSE Question 3. When the semilunar vlaves of the heart […]