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Home Q & A Board Biology-Related Homework Help General Biology
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Arroyo21 Arroyo21
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6 years ago
Which branch of this phylogenetic tree identifies the common ancestor of all modern organisms?
 
  a. A
  b. B
  c. C
  d. D
  e. E

Question 2

Which of the following would indicate the presence of plaque?
 
  a. Presence of the bacterium E. coli in a
  humans mouth.
  d. A bacterial culture from a humans mouth
  that appears purple after Gram staining.
  b. A bacterial culture from a humans mouth
  that appears pink after Gram staining.
  e. Non-pathogenic biofilms in a humans
  mouth.
  c. Presence of cyanobacteria in a humans
  mouth.
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slpconnerslpconner
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6 years ago
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Arroyo21 Author
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#2
6 years ago
Happy Dummy I'm impressed
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