Mycobacterium cells are acid-fast because of
a. their thick, highly cross-linked peptidoglycan layer.
b. the presence of lipopolysaccharides in the cell wall.
c. the presence of mycolic acids in the cell walls.
d. the lack of a cell wall.
Answer: C
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A. conservative B. semiconservative C. dispersive D. hemiconservative
All protists have cell walls
A. true B. false
In DNA profiles, the pattern of bands is _____
a. due to variations in restriction enzyme recognition sites in plasmid DNA b. identical in all individuals c. due to variations in STR alleles between individuals d. due to the presence of transgenes e. possible only when copious quantities of DNA are available
Which lineage of Cnidarians exist only as polyps as adults, build calcium carbonate exoskeletons, and have a mutualistic relationship with photosynthetic protists?
a. Scyphozoa b. Anthozoa c. Cubozoa d. Hydrozoa