The ________ rate is the relationship of the number of deaths from a given disease to the total number of cases of the disease.
A. index
B. prevalence
C. mortality
D. morbidity
Answer: C
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One of the two main angiosperm clades, this group has about 200,000 species. Members of the group
all have pollen grains with three grooves, and most have two cotyledons. Most also have net-veined leaves.
a. eudicots b. the star anise group c. monocots d. water lilies e. magnoliids
The infectious dose of Neisseria gonorrhoeae, the causeative agent of the sexually-transmitted infection gonorrhea is 10000. this means_____
Fill in the blank(s) with the appropriate word(s).
In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is
a. the relative solubility of the component. b. the size and weight of the component. c. the percentage of carbohydrates in the component. d. the number of enzymes in the fraction. e. the presence or absence of lipids in the component.
Metamorphosis is
A. the developmental changing of a scale to a feather. B. changing of one body form to another within a species, such as the change from an aquatic tadpole to a terrestrial frog. C. an intermediate condition, such as length of legs in mice between longer legs of some mice and shorter legs in others, a condition caused by Hox genes. D. the evolutionary transition from fishes to amphibians.