You digest DNA from the frog Xenopus laevis with the enzyme NotI that produces sticky DNA ends. You can ligate your DNA to:
_____ blunt AluI ends from Xenopus laevis.
_____ sticky NotI ends from Xenopus laevis.
_____ blunt AluI ends from bacteria.
_____ sticky NotI ends from bacteria.
_____ sticky EcoRI ends from Xenopus laevis.
_____ sticky EcoRI ends from bacteria.
_____ blunt AluI ends from Xenopus laevis.
__X__ sticky NotI ends from Xenopus laevis.
_____ blunt AluI ends from bacteria.
__X__ sticky NotI ends from bacteria.
_____ sticky EcoRI ends from Xenopus laevis.
_____ sticky EcoRI ends from bacteria.
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Archaea are cellular organisms that have unique cell membrane ________.
Fill in the blank(s) with the appropriate word(s).
Golden rice:
a) could help the 250,000 children each year who are at risk of blindness due to vitamin A deficiency. b) supplies more protein. c) grows without a husk, thereby reducing the processing required before it can be consumed. d) supplies more vitamin A in one serving than an individual needs in a full week. e) can make vitamin A without beta-carotene.
Antimicrobial agents that damage nucleic acids also affect
A) the cell wall. B) the cell membrane. C) the viral envelope. D) endospores. E) protein synthesis.
Which of the following statements regarding protozoa is FALSE?
A) Protozoa are unicellular eukaryotes. B) Nearly all protozoa cause disease. C) Most protozoa reproduce asexually. D) Protozoa are common in water and soil. E) Some protozoan pathogens are transmitted by arthropod vectors.