Prokaryotic cells are represented by fossils that are dated back as far as _____ billion years ago.
A. 1.5
B. 2.8
C. 3.8
D. 4.8
Ans: C. 3.8
Biology & Microbiology
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Of the taxa listed, which is NOT classified as a protist?
A) Amoeba B) Euglena C) Giardia D) Saccharomyces
Biology & Microbiology
Aquatic organisms are unable to tolerate low pH conditions largely because acidic waters contain high concentrations of ________
Fill in the blank(s) with correct word
Biology & Microbiology
What do these data suggest?
A) increased bird nesting closer to edge habitat B) increased risk of mammalian predation on nests closer to edge habitat C) decreased mammalian visitation closer to edge habitat D) highest level of nest predation by mammals occurring in the interior
Biology & Microbiology
Stool is rich in which of the following organisms?
A) Actinomyces B) Bacteriodes C) Fusobacterium D) Streptococcus E) Neisseria
Biology & Microbiology