The smallest particle of an element that still retains the properties of that element is a(n)
A. atom.
B. proton.
C. electron.
D. element.
A. atom.
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Parkinson's disease involves low levels of _____
a. acetylcholine (ACh) c. serotonin b. dopamine d. endorphins
Which of the following is FALSE?
a. The outer coats of all viruses have the same protein structure. b. The virus uses either DNA or RNA at its core but not both. c. Viruses can be replicated only after they enter a living cell. d. Most viruses have a protein coat or covering. e. A virus may remain latent for a period of time before causing infection.
You may have noticed that the prepackaged deli meats you purchase in the refrigerated section of the grocery store seem to last longer than the same meats purchased freshly sliced from the deli counter. You are puzzled because the meats are identical and you expect the products at the deli to be fresher. What is the primary reason the prepackaged meats last longer?
A. The prepackaged meats are typically sprayed with bacteriophage to prevent the growth of Listeria monocytogenes, which typically causes spoilage. B. The prepackaged meats are not handled by the deli workers. C. The prepackaged meats are stored at a much colder temperature than the deli case. D. The prepackaged meats have modified atmosphere packaging that has excluded oxygen gas, which would promote the growth of spoilage organisms.
What gives blue cheeses such as Roquefort and Stilton their unique flavor?
A) Ascomycete mold B) Alcohol C) Yeast D) Chytrids E) Mushrooms