Sponges have which of the following?
a. symmetry
b. organs
c. anus
d. spicules
e. appendages
Answer: d
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Tamiflu is a common medication given for influenza treatment. It works by protecting and blocking sialic acid molecules on the surfaces of host cells and influenza virus envelopes as they leave the cell. Which statement reflects the mechanism of Tamiflu's action?
A. Tamiflu interferes with the metabolic properties of the virus. B. Tamiflu interferes with the release of the budding viruses from the infected host cells. C. Tamiflu interferes with the replication of +ssRNA from the -ssRNA genome of the flu virus. D. Tamiflu blocks protein synthesis of the viral genome.
A collection of host cells that house different
cloned fragments of DNA is a a. cDNA library. b. transcribed DNA library. c. genomic library. d. gene library. e. plasmid library.
Anaerobic respiration involves the use of molecules other than oxygen as the final electron (acceptor/donor) in an electron transport chain
What will be an ideal response?
Total nucleic acids are extracted from a culture of yeast cells and are then mixed with resin beads to which the polynucleotide 5?-TTTTTTTTTTTTTTTTTTTTTTTTT-3? has been covalently attached
After a short incubation, the beads are then extracted from the mixture. When you analyze the cellular nucleic acids that have stuck to the beads, which of the following is most abundant? (a) DNA (b) tRNA (c) rRNA (d) mRNA