Restriction enzymes are obtained from ________
A) archaea
B) eukaryotes
C) viruses
D) bacteria
D
Biology & Microbiology
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Nitrogen supplies to atoll coral reefs are thought to come from all except
a. nitrogen fixing bacteria. b. planktonic cyanobacteria wind-driven to the reefs. c. re-cycling by fish fecal material. d. runoff from land.
Biology & Microbiology
Which types of organisms are found at the base of a grazing food web?
a. decomposing organisms b. secondary consumers c. photosynthetic organisms d. predators
Biology & Microbiology
Which level of taxonomy encompasses all of
the others?
a. family b. class c. order d. species e. genus
Biology & Microbiology
Which structure allows green sulfur bacteria to grow using light energy under conditions of very low light?
a. thylakoids b. chloroplast c. chlorosome d. phycobilisomes
Biology & Microbiology