281Customized Subject Test50. During an experiment, equal aliquots of Escherichia coli and Staphylococcus aureus are separately sonicated at the same level to mechanically disrupt bacterial cells.E. coli cells are disrupted, but there is minimal disruption of S. aureus cells. Which of the following bacterial structures best explains this difference?A) Cytoplasmic membraneB) Outer membraneC) Peptidoglycan layerOD) Phospholipid bilayerOE) Polysaccharide capsule

Introduction:- The peptidoglycan layer is a component of the bacterial cell wall that provides…

Answered: 50. During an experiment, equal…

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

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1. NSF is an enzyme that uses the energy of ATP hydrolysis to disassemble complexes between V-SNARES and t-SNARES. a) Why do you suppose such an enzyme is needed? b) If NSF were suddenly inactivated and then the cells were examined a short time later, what types of effects would you expect to see?
6. a) Some phages infecting bacteria possess the enzyme that breaks the bacterial cell wall, allowing the viral nucleic acid to enter. A) lysozyme B) peptidoglycanase C) infectase D) holin
2. “Most enzymes are gene-encoded proteins." Using this lens, explain: A) effects of increased temperature on the rate of enzymatic reactions, and B) effects of decreased temperature on enzymatic reactions, and C) importance of optimal pH and ionic strength on enzymatic reactions.
17. Which of the following is not a process to introduce a DNA molecule into a bacterial cell. a) Transformation b) Transcription c) Transduction d)Conjugation
16) Bacterial DNA replication is said to be: a) Linear b) curvilinear c) circular d) exponential e) hyperbolic 17) Cytokinesis in bacteria takes place through a process called: a) Cleavage b) septation c) cell plate formation d) molting e) cytolysis 18) The time in minutes at a specific temperature needed to kill a population of cells or spores is called: a) Z value b) K value c) Q10 d) D value e) F value19) If patients are allergic to penicillin, then you prescribe __ as an alternative: a) Tetracycline b) Cephalosporin c) Erythromycin d) Sulfonamides e) Fluoroquinolones 20) Biological control of Salmonella is by using: a) E. Coli (ETEC Strain) b) Shigella c) Bdellovibrio d) Plasmodium e) Spirillum
43) The major setback for the use of Transmission Electron Microscope is that: a) You can’t stain the sample with colored dyes b) You can’t see internal structures of the cell c) You can’t focus on Organelles inside the cell d) you can’t focus on cell membranes44) The major advantage of using the Scanning Electron Microscope (SEM) over the Transmission Electron Microscope (TEM) is that: a) You can use live material in looking through the SEM and not the TEM b) You can look at internal structures with SEM & not TEM c) You can use higher magnifications with SEM d) You can look at solid objects with SEM45) The image that you are observing in the SEM comes from: a) Direct reflection/bouncing of electrons from the specimen you are looking at b) Backscattered electros from the secondary electrons from the specimen c) A contrast between the texture of the specimen you are looking at d) A contrast between the acidophilic and basophilic components of the specimen you are looking at46) A…
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52. During the development of a new vaccine, an investigator generates a mutant strain of bacteria that does not adhere to mucosal epithelia, Mutations in which of the following bacterial components or structures would most likely prevent bacterial adhesion? htba OA) Capsules OB) Flagella OC) Lipopolysaccharide OD) Lipoteichoic acid OE) Pili OF) Porins OG) Siderophores OH) Spores in 1thou (moon) Pili
What is the effect of aSN oligomers on the vesicles? Remember that you can check any relevant video on the PC screen. a) They increase the amount of calcein in LUVS b) They pop them c) None, LUVS remain the same d) They increase the number of LUVS
All except which of the following are compared when looking at the sequence analysis of ribosomal components in microorganism as a way to determine relatedness? a)ribosomal amino acid sequence b)rRNA sequence c) rDNA sequence d) antibotic resistance
One way to distinguish Bacteria from Archaea is through the membrane phospholipids of Archaea, which have ____ linkages between the fatty acids and the glycerol backbone instead of _____ linkages. A) ester, ether B) ether, ester C) peptidoglycan, pseudopeptidoglycan

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