Microbiology Straighterline CorrectAnswered Questions| Already Graded A+

Studies by Emil von Behring and Shibasaburo Kitasato demonstrated that inactivated toxins can induce the synthesis of antitoxins in the blood of rabbits. These antitoxins (antibodies) are the basis of... a. humoral immunity b. cell-mediated immunity c. antibiotic immunity d. phagocyte-mediated immunity : a. humoral immunity Who of the following first discovered that some blood leukocytes could engulf diseasecausing bacteria? a. von Behring b. Meister c. Metchnikoff d. Ivanowski : c. Metchnikoff Who is credited with developing a vaccine against chicken cholera? 2 a. Koch b. Pasteur c. Jenner d. Lister : b. Pasteur The concept that living organisms arise from nonliving material is called... a. biogenesis b. cell theory c. spontaneous generation d. germ theory : c. spontaneous generation Protists contain all of the following forms of life EXCEPT... a. protozoa b. fungi c. slime molds d. algae : b. fungi 3 Cells with a relatively simple cell morphology that do not have a true membranedelimited nucleus are called... a. prokaryotes b. eukaryotes c. urkaryotes d. nokaryotes : a. prokaryotes The ribosomal RNA studies that led to the division of prokaryotic organisms into the Bacteria and the Archaea were begun by... a. Pasteur b. Woese c. Needham d. Watson : b. Woese