The DNA sequences found in two different species are 95% the same. This suggests these species

a. are evolving into the same species
b. contain identical problems
c. may have similar evolutionary histories
d. have the same number of mutations


Answer: c. may have similar evolutionary histories

Biology & Microbiology

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The lining of the gastrovascular cavity in cnidarians will function in both ________

a. respiration and reproduction b. urination and respiration c. respiration and digestion d. immunization and digestion e. reproduction and digestion

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Which of the following protist groups includes human pathogens?

a. parabasalids b. euglenoids c. forams d. red algae e. brown algae

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Mannitol salt agar is considered a differential medium because the salt inhibits the growth of many bacteria but not staphylococci.

Answer the following statement(s) true (T) or false (F)

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Various physical and chemical characteristics of a microbe that contribute to its pathogenicity are called

A) Pathogenicity principles B) Virulence factors C) Fomites D) None of the above

Biology & Microbiology