Answer Happy

Instructions: 1. TWO points total for filling in your information at the top of every page. 2. The exam is worth 100 points. The point value for each question is in parentheses. 3. You have the class period to complete this exam. If you get stuck on a question, move on to an easier question and return to the more difficult questions later. (Do the easy ones first!) 1. 3 pts each; 30 pts total) Fill in cach blank with the best word selected from the list below. Not all words will be used; cach word should be used only once. mucus anaerobic adhesion factor mouth antibodies vaccine antigen transmission prevalence virulence factor skin aerobic toxin gut tropism antibiotics Regardless of specific location, our human microflora is enriched in bacteria while the is also highly enriched with Gram-positive species due to the abiotic stresses of this particular environment. Although our microflora lack the s required to cause disease on their own, they can become opportunistic pathogens in a person with a compromised immune system. In contrast, a pathogen like Bordetella pertussis has the ability to attach to difficult epithelial surfaces using an and then cause severe disease symptoms through the release of a protein that changes normal host cell physiology. The immune system can find these foreign bacteria using that bind to their cell surface and allow macrophages to phagocytosis and then kill them, in part through ROS and acid stresses. This part of the immune response can be created prior to pathogen exposure through the use of s that contain one or more pathogen-specific s. In fact, their use has decreased the many previously deadly infectious diseases throughout the world and can be used during epidemics to prevent further of discase through a population: of