BSC 2085 lecture quizzes

Which of the following agents is considered nonliving? Archaea Bacteria Viruses Helminths Question2 Question 2:A(n) _________ only causes disease in a weakened host. bacteriophage opportunistic pathogen true pathogen microbe Question3 Question 3:The experiments that finally disproved spontaneous generation were performed by: Robert Koch Francesco Redi Louis Pasteur Antonie van Leeuwenhoek Question4 Question 4:The idea that life comes from nonliving material is known as ___________________. spontaneous generation endosymbiosis evolution biogenesis Question5 Question 5:Which of Koch’s postulates involves isolating an organism from the diseased host and growing it in pure culture? Koch’s fourth postulate Koch’s second postulate Koch’s third postulate Koch’s first postulate Question6 Question 6:Which of the following is not a part of aseptic technique? Washing hands. Decontaminating surfaces. Sterilizing instruments. Sterilizing surfaces in an operating room. Question7 Question 7:Who was the first person to recommend hand washing to reduce mortality rates? Ignaz Semmelweis Joseph Lister Louis Pasteur Florence Nightingale Question8 Question 8:You have counted 38 bacterial colonies on the surface of a petri dish and recorded the number in your lab notebook. This is an example of a(n) __________. conclusion theory law observation Question9 Question 9:A _________ explains how and why something occurs. hypothesis conclusion theory law 1 Question 1:Which of the following is a correctly written version of a scientific name? Escherichia Coli escherichia coli E. coli E. Coli Question2 Question 2:Which of the following is the broadest taxonomic classification? Genus Species Kingdom Domain Question3 Question 3:A genetic variant of a bacterium is known as a __________. domain mutant species strain Question4 Question 4:Which of the following is a description of a symbiotic relationship in which the symbiont is helpfulto the host? Antagonism Mutualism Parasitism Commensalism Question5 Question 5:Which of the following is false regarding normal microbiota? Members of the normal microbiota make vitamins for the host. Normal microbiota may colonize the host even before birth. Normal microbiota can include opportunistic pathogens Members of the normal microbiota cannot cause disease.