When the ciliary muscle is relaxed, the suspensory ligament is
A. taut and the lens is oval.
B. taut and the lens is flattened.
C. relaxed and the lens is rounded.
D. taut and the lens is rounded.
E. relaxed and the lens is flattened.
Answer: B
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A strategy used by dissimilatory metal-reducing bacteria that enable their use of insoluble compounds as electron acceptors is to transfer electrons to the metal via external, intermediary compounds such as ________ found in the environment or ________. These compounds are collectively known as ________.
What will be an ideal response?
There is a test for the presence of Huntington's allele in symptomless individuals. Would you recommend that Andrew have himself tested?
a. Yes b. No
The monarch butterfly is poisonous to birds; therefore, birds avoid eating them. Viceroy butterflies look very similar
to monarch butterflies, but are not poisonous. Because they look like monarch butterflies, birds also do not eat viceroy butterflies. This is an example of ____.
a. resource partitioning b. competitive exclusion c. mimicry d. camouflage e. commensalism
Molecular charge is an important characteristic influencing protein migration on a gel. What accounts for the variation in the molecular charge of proteins?
A) the intronic sequences of the protein B) the amino acid composition of the protein C) the negative charge of the sugar-phosphate backbone D) the amount of protein loaded into the wells of the gel E) the presence of secondary structures in the protein