BIO 250 Micro Test 2 Exam Questions with Correct Answers Latest Graded A+ Straighterline

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 Select one: a. humoral immunity. Correct b. cell-mediated immunity. c. antibiotic immunity. d. phagocyte-mediated immunity. Feedback The correct answer is: humoral immunity. Question 2 Correct 4.50 points out of 4.50 Not flaggedFlag question Question text Whose work on spontaneous generation first demonstrated the existence of a very heat-resistant form of bacteria that are called endospores? Select one: a. Schwann b. Redi c. Tyndall Correct d. Pasteur Feedback The correct answer is: Tyndall Question 3 Correct 4.50 points out of 4.50 Not flaggedFlag question Question text Which of the following distinguish the field of microbiology from other fields of biology? Select one: a. The size of the organism studied. b. The techniques used to study organismsregardless of their size. c. Both the size of the organism studied and the techniques employed in the study of organisms. Correct d. Neither the size of the organism studied nor the techniques employed in the study of organisms regardless of their size. Feedback The correct answer is: Both the size of the organism studied and the techniques employed in the study of organisms. Question 4 Correct 4.50 points out of 4.50 Not flaggedFlag question Question text Three the SSU rRNA sequences of 3 organisms have been compared. For organisms 1 and 2, two of the twelve nucleotides in the sequence are different. For organisms 1 and 3, six of the twelve nucleotides are different. Which organism has greater evolutionary distance from organism 1? Select one: a. Organism 2 b. Organism 3 Correct c. The evolutionary distance is the same. d. Evolutionary distance cannot be predicted from this data. Feedback The correct answer is: Organism 3