Histology is the study of
(a) cells.
(b) organelles.
(c) tissues.
(d) organisms.
(c) tissues.
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Fibrous proteins have extensive ________ structure, which allows them to be highly ordered and repetitive.
A) primary B) secondary C) tertiary D) quaternary E) multiprotein complex
The series of flattened sacs and associated vesicles in the cytoplasm of a cell is the ____________________. Fill in the blank(s) with the appropriate word(s)
Blue-footed boobies have webbed feet and are comically clumsy when they walk on land. Evolutionary scientists view these feet as
A) an example of a trait that is poorly adapted. B) the outcome of a trade-off: Webbed feet perform poorly on land but are very helpful in diving for food. C) an example of a trait that has not evolved. D) a curiosity that has little to teach us regarding evolution.
A drug with a high therapeutic index would have a ______ toxic dose and a ______ therapeutic dose.
A. low; low B. low; high C. high; high D. high; low