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Chapter 3, Problem 7MC

Which of the following statements is true?

  1. a. The cell walls of bacteria are composed of peptidoglycan.
  2. b. Peptidoglycan is a fatty acid.
  3. c. Gram-positive bacterial walls have a relatively thin layer of peptidoglycan anchored to the cytoplasmic membrane by teichoic acids.
  4. d. Peptidoglycan is found mainly in the cell walls of fungi, algae, and plants.
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Which of the following statements is true? Select one: O a. Gram-positive bacterial walls have a relatively thin layer of peptidoglycan anchored to the acids O b. Peptidoglycan is a fatty acid O c. The cell walls of bacteria are composed of peptidoglycan O d. Peptidoglycan is found mainly in the cell walls of fungi, algae and plants
Select a statement that is not true about bacteria     A. Some bacteria cause human disease   B. Some bacteria are autotrophs   C. Bacteria can be found within rocks kilometers below the Earth’s surface   D. All organisms with cells containing a membrane-enclosed nucleus and organelles are eukaryotes, whereas all organisms with cells lacking a membrane-enclosed nucleus and organelles are bacteria
Gram-positive (+) and gram-negative (-) bacteria are characterized by differences in a. the cell wall: gram+ have peptidoglycan, gram– have pseudopeptidoglycan. b. the plasma membrane: gram+ have ester-linked lipids, gram–have ether-linked lipids. c. the cell wall: gram+ have a thick layer of peptidoglycan and gram– have an outer membrane. d. chromosomal structure: gram+ have circular chromosomes, gram– have linear chromosomes.

Chapter 3 Solutions

Microbiology with Diseases by Taxonomy, Books a la Carte Plus Mastering Microbiology with Pearson eText -- Access Card Package (5th Edition)

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