Gram negative cells contain cell membrane and envelope (pick all that apply) Select one or more: a. stain red b. thick cell wall composed of peptidoglycan and lipopolysaccharides c. contain nuclear pores that transport proteins and nutrients into the mitochondria d. thin cell wall composed of lipopolysaccharides and peptidoglycan e. can result in endotoxin release and shock reactions f. All of the above pertain to eukaryotic cells g. All of the above pertain to gram positive cells h. thick cell wall composed of peptidoglycan

Gram negative cells contain cell membrane and envelope (pick all that apply) Select one or more: a. stain red b. thick cell wall composed of peptidoglycan and lipopolysaccharides c. contain nuclear pores that transport proteins and nutrients into the mitochondria d. thin cell wall composed of lipopolysaccharides and peptidoglycan e. can result in endotoxin release and shock reactions f. All of the above pertain to eukaryotic cells g. All of the above pertain to gram positive cells h. thick cell wall composed of peptidoglycan

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter22: Prokaryotes: Bacteria And Archaea

Section: Chapter Questions

Problem 2VCQ: Figure 22.16 Which of the following statements is true? Gram-positive bacteria have a single cell...

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Figure 22.16 Which of the following statements is true? Gram-positive bacteria have a single cell wall anchored to the cell membrane by lipoteichoic acid. Pori ns allow entry of substances into both Gram-positive and Gram-negative bacteria. The cell wall of Gram-negative bacteria is thick, and the cell wall of Gram-positive bacteria is thin. Gram-negative bacteria have a cell wall made of peptidoglycan, whereas Gram positive bacteria have a cell wall made of lipoteichoic acid.
Prokaryotes stain as Gram-positive or Gram-negative because of differences in the_______. a. cell wall b. cytoplasm c. nucleus d. chromosome
Mycoplasmas are pleomorphic bacteria. How do the unique structural characteristics of mycoplasmas relate to their bacterial morphology? Mycoplasmas have a low G + C genome content. Mycoplasmas appear Gram negative when a Gram stain is performed. Mycoplasmas lack a cell wall. Mycoplasmas form colonies with a fried-egg appearance.
endotoxins are: a. excreted from within the cell b. specific in their method of actino depending on the particular endotoxin c. associated with gram-positive bacteria d. part of a particular type of cell wall copmosed os lopolusaccharides e. none of the above
1. Identify a FALSE statement from the following, Group of answer choices peptidoglycan in Gram negative wall is anchored to lipoproteins of outer membrane intestinal Gram negative bacteria have larger diameters porins in their cell wall amino acids in bridge of Gram positive cells are diverse ( ir not same in all Gram positive cell wall) outer membrane provides extra protection from antibiotics lipid A induces activated macrophage to secrete interleukin -1 2. Which of the following signs and symptoms are associated with bacterial endotoxin, Group of answer choices DIC blood vessel dilation hemorrhage tissue necrosis fever all of the above 5. Serum resistant strains of Neisseria gonorrhoeae have ……………………LPS in their outer membrane Group of answer choices long short 7. Identify a FALSE statement from the following, Group of answer choices Gram negative cell wall have 1- 2 layers of peptidoglycan lipopolysaccharides have a conserved…
A farmer working on a piece of machinery gets his shirtsleeve caught in a moving piece of the equipment. His shirt is sliced, and a sharp blade covered in mud slices through his upper arm. He attempts to control the bleeding and immediately seeks medical attention. After 3 days, he develops a fever and his arm becomes extremely swollen and painful. Pulling back the bandages, he finds that the wound has become blackened and is leaking bloody fluid. Microscopic analysis of the fluid reveals the presence of gram-positive bacilli. a. Discuss what condition the patient is suffering from and the likely causative agent of this infection. b. Explain how the patient contracted this pathogenic microbe and what virulence factors contributed to the pathogenesis seen at the wound site. c. In addition to antibiotics, the physician prescribes hyperbaric therapy. Describe what this treatment involves and how it could be therapeutic to this patient.
was used by Joseph Lister to clean wounds and surgical instruments: A.Antibiotics b.Chlorine water Carbonic acid dAntitoxins e. Carbolic acid Which one of the following does not apply to the bacterial glycocalyx? It is not responsible for virulency b .It allows the organism to resist drying C. It may allow an organism to resist phagocytosis d.It is composed of carbohydrates E. It is enclosed by the cell wall
Which of the following statement about normal flora is INCORRECT? Question 3 options: A On Sabouraud's agar, yeast will appear as small creamy colonies and mold will have large fuzzy colonies B Alpha and gamma hemolysis is produced by Streptococcus species C Normal flora never cause disease D A healthy person can carry pathogens like MRSA and Proprionibacterium acnes on our skin E The growth of S. aureus turns the color of MSA to yellow
Which of the following statement/s is/are true about gram negative bacteria Cell wall has thin peptidoglycan layer Cell wall lipid content is very low Lipopolyscharride layer is present All of the above
Which of the following is true about cell wall of gram-positive bacteria? O Not loss primary stain after alcohol O It consists of multiple peptidoglycan layer O Option 5 O It is thicker than that associated with gram-negative bacteria. All of these
Diagram (your work not a figure cut and pasted) the cell walls of both a gram-positive and a gram- negative bacteria. Explain which is more pathogenic and why.
Describe the cross - section side view of a Gram - negative cell . Clearly state where the following would be located or write the letters in order of appearance from the outside to the inside . If any of these structures are not present , make sure to leave them out . A ) peptidoglycan ; ( B ) periplasm ; ( C ) porin ; ( D ) LPS ; ( E ) teichoic acids ; ( F ) plasma membrane : ( G ) outer membrane : ( H ) nucleoid