The website www.choosemyplate.gov ________
A) sells kitchenware
B) promotes USDA's dietary guideline
C) is a private online store selling dietary supplements
D) helps you find restaurants online
Answer: B
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A nonsense mutation:
A: results in a protein that is truncated from the N-terminal end. B: would likely not affect the activity of a protein. C: would not affect the primary structure of a protein. D: must result from a shorter mRNA transcript of the gene. E: is a result of a change in a codon for an amino acid in a protein to a stop codon.
An insectivorous bird has the choice of eating (1 ) meadow beetles, which are abundant and large but expose the bird to hawk predation, (2 ) under-a-rock beetles, which are large and fatty but hard to obtain, or (3 ) under-a-leaf beetles, which are easy
to obtain but small. The bird has nestlings to feed. As an optimal forager, it will A) concentrate on under-a-leaf beetles because they are easy and safe. B) concentrate on under-a-rock beetles because they are energy-rich. C) eat one kind of beetle at a time (first under-a-leaf, then meadow, then under-a-rock), switching to a new kind when the old kind becomes scarce. D) eat all three kinds of beetles, balancing the energy spent and the risks incurred against the energy gained.
Water-soluble vitamins differ from fat-soluble vitamins in that water-soluble vitamins are:
A) less readily absorbed from the GI tract B) stored in fat tissue C) stored for a brief period of time D) rarely required as daily supplements to the diet E) not excreted in urine
Who is credited with developing and documenting the first vaccination procedure against smallpox?
A. Pasteur B. Koch C. Lister D. Jenner