How many different kinds of base pairings are in DNA?

A) Hundreds or thousands B) Two
C) Millions D) Four


B

Biology & Microbiology

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If the predominating microbiota of a particular human body site included Lactobacillus, Gardnerella, and Bacteroides, it would not be unusual to isolate which of the following genera as well? 

A. Candida B. Bacillus C. Hemophilus D. Neisseria

Biology & Microbiology

Which of the following are most closely related to

the choanoflagellates? a. animals b. fungi c. amoebozoans d. algae e. none of these

Biology & Microbiology

What structure do lobsters use for gas exchange?

A) gills B) lungs C) skin D) tracheae

Biology & Microbiology

Which of the following is part of the structure of the mitochondria of a eukaryotic cell?

A) cilia B) cristae C) thylakoids D) inclusions E) nucleolus

Biology & Microbiology