Straighterline BIO250 Microbiology Graded Exam 4 (New Version June 2024)

Question 1 Correct 4.17 points out of 4.17 The best defense against arboviruses is . Select one: a. prophylactic rifampin b. vaccination c. vector control d. prompt treatment with acyclovir Question 2 Correct 4.17 points out of 4.17 Meningitis can be caused by a number of microbes, and the causative organism is often identified by microscopic observation of the cerebrospinal fluid. Identify the mismatch in the following list oforganisms and the description of the microscopic observation. Select one: a. Listeria monocytogenes; gram-negative coccobacillus with flagella b. Cryptococcus neoformans; fungal cells with a thick capsule c. Neisseria meningitidis; gram-negative diplococcus d. Enterovirus; no bacteria appear to be present in CSF e. Streptococcus pneumoniae; gram-positive flattened coccus Straighterline BIO250 Microbiology Graded Exam 4 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: or : +1 (540) 753-5914. Guaranteed Passing! Live Courses | Sciences | BIO250 | BIO250_MH_V6 | Unit 25: Applied Microbiology and Food and Water Safety Started on State Finished Completed on Time taken 28 mins 47 secs Grade 125.00 out of 125.00 (100%)Question 4 Correct 4.17 points out of 4.17 Which of the following statements regarding the structure of blood vessels is incorrect? Select one: a. In contrast to veins, arteries have higher blood pressure, more tissue layers, and are thinner vessels. b. Blood vessels are often found in parallel with lymphatic vessels. c. Connective tissue and muscle fibers are found in the layers of tissue surrounding both arteries and veins. d. Capillaries have only a single layer of endothelium, rendering them fragile and leaky during an infection with a hemorrhagic fever virus. Question 5 Correct 4.17 points out of 4.17 The most important defense of the cardiovascular system against infection is . Select one: a. fever b. lymphocytes in the blood c. lymph nodes d. the blood-brain barrier As a child, you received the OPVvaccine and its boosters. Now you are going on a mission trip to Pakistan, and the vaccine is recommended by the Centers for Disease Control and Prevention. When you go to the health office for the vaccine, they giveyou the IPV vaccine. When you ask why you are receiving the IPV rather than the OPV, the personnel explain that . Select one: a. the IPV has fewer active viruses in it than the OPV, soit is safer b. there is no possibility of actually developing polio from this vaccine c. IPV is used as a booster only, and OPV is used exclusively for children's first immunization d. the IPV is preferred by patients because it can be taken orally Question 3 Correct 4.17 points out of 4.17Question 7 Correct 4.17 points out of 4.17 For the following list of anti-HIV drugs and their mechanism of action. Identify the mismatch. Select one: a. Integrase inhibitor - blocks the active site of the enzyme required to splice HIV DNA into the human genome b. AZT (azidothymidine) - as an analog of thymidine, it is incorporated into viral RNA in place of thymidine c. Reverse transcriptase inhibitor - blocks the active site of the enzyme required to convert viral RNA to DNA d. Protease inhibitor - blocks the active site of the protease required for assembling new viral particles Yersinia pestis . Select one: a. is usually transmitted by a flea vector b. was virulent historically but currently circulating strains are not virulent c. has deer as an endemic reservoir d. does not respond to antimicrobial drugs Question 6 Correct 4.17 points out of 4.17Question 9 Correct 4.17 points out of 4.17 Which of the following is not a virulence factor of Bordetella pertussis? Select one: a. Endotoxin b. M protein c. Tracheal cytotoxin d. Filamentous hemagglutinin e. Pertussis toxin Question 10 Correct 4.17 points out of 4.17 Virulence factors of S. pyogenes include . Select one: a. polysaccharides on the cell wall b. spiky M proteins c. lipoteichoic acid d. hyaluronic acid capsule e. All of thechoices are correct. Following unprotected sex with a guy you met at a party, you are now worried about what you might have been exposed to during this episode. Ten days later, you talk to your doctor about getting an HIV test. What is the doctor's response? Select one: a. It's too soon to detect the antibody produced by your immune system in response to HIV exposure, so a test will come back negative. Wait a few more weeks to be tested. b. The incidence of HIV infection in the United States is at an all-time low level, so transmission was not at all likely, especially after only a single possible exposure. c. HIV infection can be latent and asymptomatic for years, so testing should be postponed until you exhibit symptoms of AIDS. d. The antibioticthat you have been taking for a urinary tract infection will also destroy HIV, so you don't have to worryabout an infection. Question 8 Correct 4.17 points out of 4.17Question 12 Correct 4.17 points out of 4.17 In addition to antimicrobials, patients with diphtheria are treated with . Select one: a. antitoxin b. heart medication c. bronchoscopy d. tracheostomy e. All of thechoices are correct. Question 13 Correct 4.17 points out of 4.17 A metagenomic study from a never-before-seen type of gingival infection indicates the presence of large numbers of archaea. Which of the following would be a good practice to isolate this organism? Select one: a. Use an anaerobic medium and incubate in a sealed container. b. Incubate the isolation medium adjacent to a bright full-spectrum light. c. Incubate the isolation medium at about 90°C. d. Adjust the pH of the medium to below 5. What features of the respiratory system protect it from infection? Select one: a. Cilia b. Mucus c. Macrophages d. Nasal hairs e. All of the choicesare correct. Question 11 Correct 4.17 points out of 4.17Question 15 Correct 4.17 points out of 4.17 It is now past the normal dinner time, but you do not even want to think about food. Only diarrhea, abdominal cramps, and vomiting are on your mind. This all started a few hours ago after having a ham sandwich for lunch purchased from a street vendor. With your microbiology knowledge, you surmise that it is a Staphylococcus aureus-related disorder. Why do you think this? Select one: a. Ham is notorious for being contaminated with Staphylococcus aureus bacteria. b. The toxin produced by Staphylococcus aureus was already in the ham, so the symptoms can occur quickly. c. Staphylococcus aureus isthe most common cause of gastrointestinal disease. d. Only Staphylococcus aureus infection causes vomiting, along with cramps and diarrhea. Question 16 Correct 4.17 points out of 4.17 Cells of the immune system are not found in which of the following tissues in the gastrointestinal tract? Select one: a. Tooth enamel b. Peyer's patches c. Tonsils and adenoids d. Appendix Which of the following is not true of enterotoxigenic E. coli (ETEC)? Select one: a. It causes traveler's diarrhea. b. Fluid replacement is vital to surviving an infection. c. It causes a high fever. d. It can be life-threatening in infants. Question 14 Correct 4.17 points out of 4.17Question 18 Correct 4.17 points out of 4.17 A patient in your clinic has tested positive for syphilis, and following his visit, you must prepare the room for future use. To avoid spreading this organism to other patients, the best approach is to . Select one: a. discard all linens and instruments in biohazard containers b. lock the room and post a sign that it must be professionally decontaminated c. clean all surfaces with a common disinfectant d. contact the CDC for guidance on proper cleaning Question 19 Correct 4.17 points out of 4.17 Which population is at greatest risk for group B Streptococcus infection? Select one: a. AIDS patients b. Post-menopausal women c. College age women d. Neonates e. Pregnant women Cholera symptoms are . Select one: a. All of thechoices are correct. b. hypotension, tachycardia, and shock c. loss of blood volume d. copious watery diarrhea e. acidosis, sunken eyes, and thirst Question 17 Correct 4.17 points out of 4.17Question 21 Correct 4.17 points out of 4.17 Which of the following statements regarding genital warts is incorrect? Select one: a. They formlarge cauliflower-like masses called condyloma acuminata. b. They are not common in the United States. c. They are sexually transmitted. d. Certain strains predispose a person to cancer of the cervix or penis. e. They often occur on the penis, vagina, and cervix. Question 22 Correct 4.17 points out of 4.17 The zone of soil around roots of plants is called the . Select one: a. biosphere b. hydrosphere c. rhizosphere d. lithosphere e. ionosphere Restriction factors in the reproductive tract . Select one: a. are enzymes that hydrolyze the phosphodiester bond in DNA b. provide an innate protective effect against viral infection c. appear to derive from unculturable microbes in the normal microbiota d. adjust the pH of the mucosa and are modified during sexual maturation Question 20 Correct 4.17 points out of 4.17Question 24 Correct 4.17 points out of 4.17 The study of the practical uses of microbes in various industries and technologies is . Select one: a. industrial microbiology b. microbial ecology c. bioengineering d. applied microbiology e. biotechnology Question 25 Correct 4.17 points out of 4.17 Heterotrophs include . Select one: a. consumers only b. producers and consumers c. consumers and decomposers d. producers only e. producers, consumers, and decomposers Which environment represents the largest pool of microbial genes? Select one: a. Oceans b. Freshwater lakes c. Rainforest d. Humans and animals e. Soil Question 23 Correct 4.17 points out of 4.17Question 27 Correct 4.17 points out of 4.17 Which of the following processes is not a part of metagenomic analysis of an environment? Select one: a. Reverse transcription b. High-throughput sequencing c. Polymerase chain reaction d. Extraction of DNA from original sample e. DNA sequence assembly Question 28 Correct 4.17 points out of 4.17 The products of maltose fermentation in bread-making are . Select one: a. ethanol and water b. ethanol and carbon dioxide c. lactic acid and carbon dioxide d. carbon dioxide and water e. lactic acid and water Select the statement that explains the usefulness of metagenomic analysis in research today. Select one: a. It evaluates microbial diversity in a habitat. b. It allows the identification of unculturable microorganisms. c. All of these are correct statements. d. It detects the abundance of microorganisms in an environment. Question 26 Correct 4.17 points out of 4.17Question 30 Correct 4.17 points out of 4.17 Which statement is true regarding pasteurization? Select one: a. During pasteurization, the heating is done very quickly to prevent achange in the integrity and taste of the product. b. The process was first used in the wine industry. c. All statements are true. d. It does not kill all microorganisms in milk. Quiz navigation 1 2 3 4 5 6 7 8 9 10 26 27 28 29 30 Show one page at a time Finish review Analysis of a water sample by a series of presumptive, confirmatory, and completed tests that provide an estimate of coliform numbers in the water is called the . Select one: a. most probable number (MPN) b. standard plate count c. coliform count d. membrane filter method Question 29 Correct 4.17 points out of 4.17© 2023 StraighterLine. All rights reserved