Which of the following statements about treatment or prevention of a prion infection is true?
A) Antibiotic therapies such as penicillin are very effective cures.
B) High doses of anti-inflammatory drugs such as ibuprofen reduce the symptoms of prion infections.
C) Preventative vaccines have recently been shown to be effective in preventing prion infections.
D) There is no known treatment or cure for prion infections.
Answer: D
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When insulin is secreted from the pancreas and acts on muscle cells to increase glucose uptake, this is an example of ____.
A. autocrine signaling B. direct intercellular signaling C. paracrine signaling D. endocrine signaling E. contact-dependent signaling
Researchers Feng and Zhao discovered premature stop codons in the T1R gene in Toothed and Baleen whales. How would a premature stop codon affect this protein?
A. The protein will be partially synthesized and will function incorrectly. B. The protein would be synthesized completely intact and function properly. C. The protein would be synthesized completely intact but function incorrectly. D. The protein will be partially synthesized and function correctly. E. The gene for the protein would no longer be found in the genome.
The initial floristic composition hypothesis proposes that the process of succession at any site is dependent on which species arrive first
Indicate whether the statement is true or false
A viroid is a completely developed infectious agent composed of nucleic acid and surrounded by a capsid
Indicate whether the statement is true or false