Biology Of Infectious Disease Test Exam Questions With Correct Verified Answers |100% Pass (A+ Certified)

BIOLOGY OF INFECTIOUS DISEASE TEST EXAM QUESTIONS WITH CORRECT VERIFIED ANSWERS |100% PASS (A+ CERTIFIED) What is hepatitis? Answer inflammation of the liver What is acute hepatitis? Answer rapid Answer flu-like symptoms followed by jaundice and enlarged liver What is chronic hepatitis? Answer Develops slowly, but lasts a long time Can be asymptomatic for years and cause extensive damage What is a spherical particle? Answer hepatitis B surface antigen (HBsAg). that stimulate immune system but don't cause infection What is a filamentous particle? Biology of Infectious Disease Test 5 Answer type of Hepatitis B virus (HBV) subviral particle, made of Hepatitis B surface protein. non-infectious and abundant in the blood of HBV infected individuals. What is a dane particle? Answer the infectious virion that causes HBV (Hepatitis B virus) What is a satellite virus? Answer dependent on other viruses for replication What is a superinfection? Answer a new infection that develops during or after treatment for an existing infection How do HBV and HDV work together to create a superinfection? Answer HDV uses the empty spherical particles of HBV to become enveloped and infectious 10. What does Hepatitis A cause? Answer 1/2 subclinical, 1/2 develop acute hepatitis (fever, chills, headache, nausea, jaundice) Biology of Infectious Disease Test 5 Hepatitis A characteristics Answer infectious, naked +ssRNA, fecal/oral transmission survives on hard surfaces for days - not damaged by chlorine What does Hepatitis B cause? Answer Chronic hepatitis is most common but can cause acute or fulminant also called serum hepatitis Characteristics of Hepatitis B Answer enveloped dsDNA, transmitted by blood (parenteral route) and STD mature particle = dane particle has spherical particles - HBeAg antigens What does Hepatitis D cause? Answer Delta hepatitis Hepatitis D characteristics Answer satellite virus, naked -ssRNA (becomes enveloped when in co infection with HBV) Biology of Infectious Disease Test 5 Only causes disease if coinfection occurs with hepatitis B virus. (superinfection) 16. What does Hepatitis C cause? Answer chronic hepatitis - severe liver damage - leading cause of liver transplants Characteristics of Hepatitis C Answer enveloped +ssRNA, transmitted via parenteral route, needles and sex Can take up to 20 years to develop (silent epidemic) What does Hepatitis E cause? Answer Non-A hepatitis or Enteric hepatitis - acute hepatitis Characteristics of Hepatitis E Answer naked +ssRNA, fecal/oral transmission self limiting Basic structure of retroviruses Answer polyhedral cone capsule enveloped w/viral attachment proteins 2 stands +ssRNA reverse transcriptase, protease, and integrase Biology of Infectious Disease Test 5 What is the central dogma? Answer DNA - RNA - Protein What is reverse transcription? Answer genetic info begins at RNA and is transcribed to DNA David Baltimore Answer discovered reverse transcriptase Percival Pott Answer Discovered a link between chimney sweeps and scrotal cancer Peyton Rous Answer discovered tumor viruses in chickens (RSV) What are some known causes of cancer? Answer chemical, radiation, biological (viruses and genetics) damage to genes that control cell cycle What did Michael J. Bishop and Harold E. Varmus do?