Question 32 All of the following are true regarding fimbriae, pili, and flagella, EXCEPT A) O Fimbriae and pili are generally used for attachment. B) O Specialized pili are used for DNA transfer between bacterial cells. C) O Bacterial chemotaxis occurs by the changing frequency of runs to tumbles. D) O Flagellar motion in a bacterium occurs in a rotary fashion, unlike a eukaryotic flagellum EO The pili of some bacterial species can be used for either a gliding or twitching type of motility There are no exceptions, A-E are all true. eneration time?

Question 32 All of the following are true regarding fimbriae, pili, and flagella, EXCEPT A) O Fimbriae and pili are generally used for attachment. B) O Specialized pili are used for DNA transfer between bacterial cells. C) O Bacterial chemotaxis occurs by the changing frequency of runs to tumbles. D) O Flagellar motion in a bacterium occurs in a rotary fashion, unlike a eukaryotic flagellum EO The pili of some bacterial species can be used for either a gliding or twitching type of motility There are no exceptions, A-E are all true. eneration time?

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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QUESTION 74 Look at the picture, What is the purpose of this structure attached to the bacteria that makes it more pathogenic? O used for locomotion Oused for attachment to surfaces and cells O used to prevent phagocytosis/ engulfment by immune cells O used to enter host cells QUESTION 75
Question 1Which of the following pairings is correct? Question 1 options: a) Fungi; cell walls b) Viruses; obligate aerobes c) Protozoa; multicellular d) Prokaryotes; nuclei
QUESTION 19 You are interested in observing Archaea motility under a microscope. What do you see? • A. Runs backwards and forwards • B. Twitching O C. Tumbles D. Runs and tumbles O E. No movement as no species of Archaea make structures for locomotion
Question 12
Question 1 Listen If you are given a sample with 1,000,000 pfu/mL of bacteriophage (Tube A) and plate 1mL of the sample on a TSA plate, what will you observe after 24 hours incubation? (How many plaques?) 100,000 because it is a 1:10 dilution. Zero because bacteriophage need a host to grow. More than 300 because it will be TNTC. 1,000,000 plaques because there are 1,000,000 phage in 1mL.
Question 16 Which of the following is not used to culture viruses in the laboratory? A) Guinea pigs B cell lines from human embryos C embryonated eggs D) enrichment broth
Question 10 When DNA replication occurs in eukaryotic cells before Mitosis or Meiosis, the DNA starts to separate at multiple origins of replication. As the DNA continues to separate, a is formed. Question 10 options: A) B) C) D) DNA Bubble DNA Fork Daughter Cell Replication Bubble
QUESTION 18 You are studying an emerging pathogen. You discover that patients have been infected up to twenty years previously with the pathogen though they did not develop signs and Upon further analysis you note that their major organ systems have been slowly damaged by the pathogen over time. You will document this pathogen as causing which type of infection? latent zoonotic acute O chranic QUESTION 19 Which of the following is a type of membrane disrupting toxin? O a. superantigen O b. botulinum toxin Oc coagulase O d. phosopholipase QUESTION 20 Which of the following is an example of an exoenzyme that can allow microbes to be more invasive? O a. hyaluronidase O b.coagulase Oc ipid A O d. superantigen
Question 19 Bacteria can best be described as O unicellular, prokaryotic, autotrophic or heterotrophic organisms unicellular, eukaryotic, autotrophic or heterotrophic organisms multicellular, eukaryotic, heterotrophic organisms O multicellular, prokaryotic, autotrophic organisms
QUESTION 41 You are doing research on a bacterium that undergoes gliding, not surprisingly you note the bacterium produces what? • A. capsule • B. hamus/hami • C. slime layer D. surface array layer (S layer) • E. stalk
Question 20 Under what conditions do endospores typically form? O ideal conditions where bacteria thrive O normal conditions O harsh conditions such as extreme droughts Only when bacteria reproduce sexually through conjugation
Question 17 Which enzyme catalyzes formation of "peptide crosslinks" in peptidolgycan? O peptiodotransglycase aminoacyl transferase bacterial transpeptidase ribozymes