Chapter 27 Quiz

Last Updated By newton.sharon on 02/02/2012
3346 people took this quiz
  • Share
http%3A%2F%2Fwww.funnelbrain.com%2Fqc-84498-span-stylefont-family-arial-times-serif-line-height-18px-text-align-left-mycoplasmas-are-bacteria-that-lack-cell-walls-on-the-basis-of-this-structural-feature-which-statement-concerning-mycoplasmas-should-be-true-span.html

Though plants, fungi, and prokaryotes all have cell walls, we place them in different taxa. Which of these observations comes closest to explaining the basis for placing these organisms in different taxa, well before relevant data from molecular systematics became available?

Answer:
a)  Some have cell walls only for protection from herbivores.
b)  Some have cell walls only for support.
c)  Some closely resemble animals, which lack cell walls.
d)  Some have cell walls only to control osmotic balance.
e)  Their cell walls are composed of very different biochemicals.
View as Flashcard Quiz
Related Quiz Content
  • newton sharon
    Answered in Chapter 27 Quiz
    Which statement about bacterial cell walls is false?
    a)Cell walls prevent cells from bursting in hypotonic environments.
    b)Cell walls prevent cells from dying in hypertonic conditions.
    c)Bacterial cell walls are similar in function to the cell walls of many protists, fungi, and plants.
    d)Cell walls provide the cell with a degree of physical protection from the environment.
    e)Bacterial cell walls differ in molecular composition from plant cell walls.
    b)Bacterial cell walls differ in molecular composition from plant cell walls.
  • newton sharon
    Answered in Chapter 27 Quiz
    The typical prokaryotic flagellum features ?
    a)A. a 9 + 2 pattern of microtubules.
    b)B. a covering provided by the plasma membrane.
    c)C. a complex motor embedded in the cell wall and plasma membrane.
    d)D. a 9 + 2 pattern of microtubules and a covering provided by the plasma membrane.
    e)E. a 9 + 2 pattern of microtubules and a complex motor embedded in the cell wall and plasma membrane.
    c)E. a 9 + 2 pattern of microtubules and a complex motor embedded in the cell wall and plasma membrane.
  • newton sharon
    Answered in Chapter 27 Quiz
    Which statement about the genomes of prokaryotes is correct?
    a)Prokaryotic chromosomes are sometimes called plasmids.
    b)Prokaryotic cells have multiple chromosomes, "packed" with a relatively large amount of protein.
    c)Prokaryotic genomes are composed of circular DNA.
    d)The prokaryotic chromosome is not contained within a nucleus but, rather, is found at the nucleolus.
    e)Prokaryotic genomes are diploid throughout most of the cell cycle.
    c)Prokaryotic genomes are diploid throughout most of the cell cycle.
  • newton sharon
    Answered in Chapter 27 Quiz
    f a bacterium regenerates from an endospore that did not possess any of the plasmids that were contained in its original parent cell, the regenerated bacterium will probably also
    a)be unable to survive in its normal environment
    b)lack a chromosome.
    c)lack a cell wall.
    d)lack antibiotic-resistant genes.
    e)lack water in its cytoplasm.
    d)lack water in its cytoplasm.
  • newton sharon
    Answered in Chapter 27 Quiz
    Although not present in all bacteria, this cell covering often enables cells that possess it to resist the defenses of host organisms, especially their phagocytic cells.
    a)sex pilus
    b)cell wall
    c)capsule
    d)endospore
    c)endospore
  • newton sharon
    Answered in Chapter 27 Quiz
    Prokaryotes' essential genetic information is located in the
    a)plasmids
    b)nucleosome
    c)nucleoid
    d)exospore
    e)nucleolus
    c)nucleolus
  • newton sharon
    Answered in Chapter 27 Quiz
    In a hypothetical situation, the genes for sex pilus construction and for tetracycline resistance are located together on the same plasmid within a particular bacterium. If this bacterium readily performs conjugation involving a copy of this plasmid, then the result should be
    a)the temporary possession by this bacterium of a completely diploid genome.
    b)the subsequent loss of tetracycline resistance from this bacterium.
    c)he rapid spread of tetracycline resistance to other bacteria in that habitat.
    d)a bacterium that has undergone transduction.
    e)the production of endospores among the bacterium's progeny.
    c)the production of endospores among the bacterium's progeny.
  • newton sharon
    Answered in Chapter 27 Quiz
    Hershey and Chase performed an elegant experiment that convinced most biologists that DNA, rather than protein, was the genetic material. This experiment subjected bacteria to the same gene transfer mechanism as occurs in
    a)Transformation
    b)Transduction
    c)binary fussion
    d)conjugation
    e)endosymbiosis
    b)endosymbiosis
  • newton sharon
    Answered in Chapter 27 Quiz
    A hypothetical bacterium swims among human intestinal contents until it finds a suitable location on the intestinal lining. It adheres to the intestinal lining using a feature that also protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a human in whose intestine this bacterium lives can spread the bacterium, even after being mixed with water and boiled. The bacterium is not susceptible to the penicillin family of antibiotics. It contains no plasmids and relatively little peptidoglycan.


    Adherence to the intestinal lining by this bacterium is due to its possession of
    a)fimbriae
    b)pili
    c)a flagellum
    d)a capsule
    e)a cell wall with an outer lipolysaccharide
    d)a cell wall with an outer lipolysaccharide
  • newton sharon
    Answered in Chapter 27 Quiz
    Where can you find complete chromosome in bacterial cell?
    a)nucleiod
    b)endospore
    c)endospore and nucleiod
    d)nucleolus
    c)nucleolus
Discussion Board
Chapter 27 Quiz
Chapter 27 Quiz
Quiz Taken:3346 people took this quiz
Rate this Quiz
Teams
Quiz does not belong to any team.
Quiz Tags
Tags not available.
Free Quiz Question From Chapter 27 Quiz
Question: Though plants, fungi, and prokaryotes all have cell walls, we place them in different taxa. Which of these observations comes closest to explaining the basis for placing these organisms in different taxa, well before relevant data from molecular systematics became available?
Answer:
Some have cell walls only for protection from herbivores.
Some have cell walls only for support.
Some closely resemble animals, which lack cell walls.
Some have cell walls only to control osmotic balance.
Their cell walls are composed of very different biochemicals.