In an experiment Staphylococcus, streptococcus and enterococcus are bacteria that are stained dark blue/violet by Gram stain. Which statement is False? a. all are gram-positive bacteria b. all are Gram-negative bacteria c. all are spherical bacteria d. all are prokaryotic cells e. all can cause a disease
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- E. coli and Salmonella are bacteria. O Gram positive O Harmless O Extinct O Gram negative bacteria have a thick, outer layer of peptidoglycan and stain purple. Gram negative O Infectious O Non-infectious Gram positiveO O O What is the name of the bacteria genus for picture A and B, respectively? A Streptococcus and Staphylococcus Staphylococcus and Streptococcus Escherichia and Proteus Proteus and Escherichia B stoj +4Which of the following microorganisms contain large amounts of peptidoglycan? a. Some viruses O b. Gram positive bacteria O c. All kinds of fungi O d. Gram negative bacteria
- The first step for directly linking a microbe to a specific disease according to Koch's postulates is to O isolate microbes from the blood of healthy animals. obtain a sample of blood or other body fluid from a diseased animal. O culture the blood or other body fluid from a discased animal using nutrient medium. O inject a sample of blood or other body fluid from a diseased animal into a healthy animal. O compare the blood of a sick animal to blood obtained from a healthy animal.Which of the following is present in certain Gram positive bacteria and functions in resistance? O a. Pili O b. Spores Oc. Cytoplasm O d. Cell wallWhich of the following statements is incorrect regarding Gram negative bacteria Select one: O a. Lipopolysaccharide layeris present Ob. All of the mentioned above O c. Cell wall lipid content is very low O d.Cell waIlhas a thin peptidoglyean layer
- A bacterium has the following characteristics:∙ It adheres to the human intestinal lining using a feature that protects it from phagocytes, bacteriophages, and dehydration∙ It can survive being boiled∙ It contains no plasmids and relatively little peptidoglycanWhich of the following characteristics allows this bacterium to adhere to the intestinal lining? Group of answer choices A. fimbriae B. pili C. an endospore D. a flagellumYou are a doctor at a field hospital deep in the Amazon jungle. A local villager comes to you sick with nausea, diarrhea and vomiting and you suspect they may have food poisoning. Several different types of bacteria can cause food poisoning including Campylobacter jejuni, Staphylococcus aureus, and Salmonella tyhphirium. How will using a microscope help you to identify which of the three bacteria are responsible for making your patient sick so that you can administer the correct antibiotic?Consumers are advised to avoid stuffing a turkey the night before cooking (where the stuffing would be made on the stove and then placed in the turkey), even though the turkey is refrigerated. A homemaker questions this advice and points out that the bacteria of human disease grow mainly at warm temperatures, not in the refrigerator. What explanation might you offer to counter this argument?
- All bacteria can be categorized as either Gram positive or Gram negative cells. O 1) True O 2) FalseMatch each group of bacteria with its best description. high G+C bacterial low G+C bacteria nonproteobacteria Proteobacteria deeply branching bacterial A. many thrive at high temperatures and in harsh environments; believed to similarities with ancient bacteria B. gram-positive group that includes the Actinobacteria C. gram-positive group that includes the Bacilli D. "gram-negative bacteria including the spirochetes, E. large group of gram-negative GFC group, and planctomy bacteria that includes five diverse classesYou are working for the CDC studying outbreaks of foodborne infectious disease. Your latest case is an incidence of food poisoning in a fast food restaurant. 5 people have been hospitalized for food poisoning, so you are working with that hospital to identify the source of the outbreak. Hospital clinicians have taken samples from each of the 5 patients for culturing. Each bacterial culture grew one likely microbe, each labelled P1, P2, P3, P4, and P5. All 5 isolates appear to have the same colony morphology on the plates, and all appear to be Gram-negative rods 1 micron wide and 3 microns long under the microscope. In addition, all 5 isolates appear to perform the same on an API 20E test strip that tests bacteria for 20 biochemical abilities. No other testing has been done yet. How would you best describe your set of isolates at this moment? O Each isolate is the same strain, of a different species O Each isolate is a different strain, of different species O Each isolate is a different…