Contemporary Issues in Biology Exam 3 Questions and Answers 100% Pass

Contemporary Issues in Biology Exam 3 Questions and Answers 100% Pass 18: HIV is most often spread by unprotected anal or vaginal sex. - Answer- True 18: The initial (first) stage of an HIV infection is called Acquired Immunodeficiency Syndrome (AIDS) - Answer- False 18: The WHO African region is the area of the world most affected by HIV. - Answer- True 18: An HIV infection gradually increases a person's susceptibility to a wide range of infections, cancers, and other diseases that a person with a healthy immune system could fight off. - Answer- True 18: People should not share food or utensils with a person infected with HIV because HIV can be spread via saliva. - Answer- False 19: Stressors or situations associated with substance abuse can trigger relapse- even after many years of not taking the drug. - Answer- True 19: Drug addiction reduces a person's natural capacity to produce the neurotransmitter responsible for feeling pleasure. - Answer- True 19: Drug addiction causes lasting changes in brain function - Answer- True 19: Drug addicts may require constantly higher doses and a quicker passage into the brain- even when the drug no longer gives pleasure - Answer- True 19: When a person satisfies a need or fulfills a desire, the neurotransmitter melatonin is released into the brain, producing feelings of pleasure - Answer- False (dopamine) Lab 9: People living near areas where pig manure is used as fertilizer are more likely to develop a MRSA infection. - Answer- True Lab 9: In the U.S. antibiotics are banned form use in animal feed. - Answer- False Lab 9: Drug resistant bacteria have become more common due to misuse and over use of antibiotics - Answer- True Lab 9: A researcher in the U.S. found that at one farm 70% of the pigs she sampled were positive for MRSA and over 60% of workers had MRSA growing in their nostrils. - Answer- True Lab 9: Some researchers have likened the farm industry to the tobacco industry because the farm industry claims there is no connection between antibiotic use and drug resistant bacterial infections. - Answer- True 20: This study was unique because it focused on the genomes of people form hundreds of indigenous populations, not just people in highly populated areas like Europe and China - Answer- True