BSC 101 Exam 3 Questions And Answers Rated A+ New Update Assured Satisfaction

Structure of a typical viral particle? - Answer--nucleic acid with either DNA or RNA -surronder by a capsized of protein -sometimes embellishments (a viral envelope outside the capsid) How do viruses infect cells? - Answer-attach themselves to the host cell -by injection of their nucleic acid into the host cell -by the host cell engulfing the virus Why is a virus considered "not" alive? - Answer--they lack the ability to reproduce/replicate -so it is highjacking the cellular machinery inside the host cell to make its own protein -acellular, and parasitic -don't grow and divide on own Different types of innate immunity? - Answer--skin hair cilia -mucus membranes -digestive enzymes -stomach acidity -inflammatory response inflammatory response? - Answer--inflammation -a response to trauma -bacteria,fungal spores and/or viruses have a direct entry into your circulatory system How pathogens are marked and destroyed when they invade the body? - Answer--antibodies search for them in blood and breast milk and mark and destroy them by phagocytes before they can infect cells -the more antibodies the higher the response to the invadersHow vaccinations can cause secondary response? - Answer--put a small amount of the pathogen in you which creates memory cells or antibodies to kill it off it returns How herd immunity works? - Answer--indirect form of protection from the infectious disease that occurs when a large percent of a population has become immune to the infection Why everyone who is medically capable should get vaccinated? - Answer--vaccinations have to be at 95% of people or above in order for a disease to disappear -not enough people are vaccinated to keep the diseases away How fats are digested? - Answer--most fats have a long chain of carbons with hydrogen atoms attached, digested by enzymes breaking the carbon bonds