Ribose differs from deoxyribose by having:a
two attached nitrogenous bases.
b. one less oxygen.
c. an extra hydroxyl group.
d. an extra carbon in the ring.
e. one less carbon in the ring.
c
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A nosocomial infection is one that:
A) a patient develops during hospitalization or erupts within 14 days of hospital discharge. B) affects only the nose. C) is acquired in the community. D) the patient has at the time of hospital admission.
Which hormones play a role in calcium metabolism?
Evolution, viewed on a small scale, as it relates to changes in a single gene or allele frequency in a population over time, is called
A. genetic evolution. B. macroevolution. C. phenotypic evolution. D. speciation. E. microevolution.
Golden rice:
can make vitamin A without beta-carotene. could help the 250,000 children each year who are at risk of blindness due to vitamin A deficiency. supplies more vitamin A in one serving than an individual needs in a full week. is an example of organic farming. grows without a husk, thereby reducing the processing required before it can be consumed.