REVIEW & REHEARSE 13 EVOLUTION and DIVERSITY AMONG the MICROBES

!quesyellow! <i>Check Your Knowledge</i>

Question 13.11

Prokaryotes are found in ________ domain(s).

  • a) 1
  • b) 2
  • c) 3
  • d) 4
  • e) 5

Question 13.12

From an evolutionary perspective, the most basic division among all organisms on earth is among:

  • a) plants, animals, and bacteria.
  • b) bacteria, archaea, and eukarya.
  • c) plants, animals, and eukarya.
  • d) bacteria, animals, and eukarya.
  • e) bacteria, archaea, and protists.

Question 13.13

Which of the following statements about prokaryotes is incorrect?

  • a) Prokaryotes contain ribosomes.
  • b) Some prokaryotes can conduct photosynthesis.
  • c) Prokaryotes have circular pieces of DNA within their nuclei.
  • d) Prokaryotes appeared on earth before eukaryotes.
  • e) Prokaryotes contain cytoplasm.

Question 13.14

“Establishing a phylogeny for bacteria is more difficult than establishing a phylogeny for plants or animals.” This statement is:

  • a) correct, because of the quick generation time of bacteria.
  • b) incorrect, because lateral gene transfer makes creating a phylogeny simpler.
  • c) incorrect, because the metabolic diversity of bacteria makes classification impossible.
  • d) correct, because it is difficult to obtain enough morphological data from bacteria.
  • e) correct, because bacteria can engage in lateral gene transfer.