Buy Viruses and Prokaryotes Assignment

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1. What would be the effect if someone skipped the third step with the
ethanol solution?
(A) All bacterial cells would stain blue.
(B) All cells would be colorless.
(C) It would have no effect on the final cell colors.
(D) All bacterial cells would stain red.
CHAPTER 6
 
2. What would be the effect if someone skipped the heat fixation process?
(A) All bacterial cells would stain blue.
(B) There would be no color, as there would be no cells on the slide.
(C) It would have no effect on the final cell colors.
(D) All bacterial cells would stain red.
3. What would be the effect if someone stepped away and permitted the
crystal violet stain to remain in contact with the cells for 5 minutes?
(A) All bacterial cells would stain blue.
(B) There would be no color, as there would be no cells on the slide.
(C) It would have no effect on the final cell colors.
(D) All bacterial cells would stain red.
4. What is the truest relationship between a polyhedral virus and a bacterial
coccus?
(A) Their genomes are similar in structure and differ only as a matter of
size.
(B) The only similarity is the relative overall general shape.
(C) The cell wall of the bacterium is analogous in function to the coat of
the virus.
(D) The cell membrane of the bacterium is analogous in function to the
envelope of the virus.
(E) Both survive only by acting as a parasite on a host cell.
215. The _____ of the bacterial flagella are embedded into the _____ of the
bacterium.
(A) basal bodies; cell wall
(B) hooks; cell membrane
(C) axial filaments; outer glycocalyx
(D) basal bodies; cell membrane
(E) hooks; cytosol
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216. What chitin is to a fungus, _____ is to a bacterium.
(A) cellulose
(B) actin
(C) peptidoglycan
(D) lactose
(E) chromatin
Viruses and Prokaryotes ‹ 53
217. Some bacteria can form endospores. Which of the following is the best
description of these structures?
(A) They are an asexual form of reproduction analogous to the spores of
fungi.
(B) They are the only means of sexual reproduction found in bacteria.
(C) They are a survival mechanism for bacteria that is formed when
resources become limited or conditions hostile.
(D) They are formed after conjugation, as observed with some enteric
bacteria.
(E) They are a fully functioning and metabolizing reduction of the original bacterium adapted to the harsher conditions that triggered their
formation.
218. Eukaryotic cells divide by mitosis. Bacteria divide
(A) by lateral schism.
(B) by binary fission.
(C) by meiosis.
(D) by mitosis, where both daughter cells get one-half of the original contents of the mother cell.
(E) by fragmentation.
219. Double-stranded DNA viruses include
(A) Ebola virus and Lassa virus.
(B) bacteriophage T4 and variola.
(C) rhinovirus and poliovirus.
(D) rotavirus and reovirus.
(E) parvovirus and phage φX174.
220. Similarities between viruses and rickettsia include
(A) both metabolize resources from their host cell.
(B) both undergo schizogony to create forms that are infectious.
(C) both spread from host to host by sexual contact.
(D) both are obligate intracellular parasites.
(E) both can be observed inside the host cell by light microscopy.
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