©McGraw-Hill EducationConsider the cladogram shown. Based on this cladogram, which species has the greatest number of ancestral character states?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: D
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Growth during the childhood years includes the conversion of ____ to bone
a. blood b. bone marrow c. muscle d. cartilage e. loose connective tissue
As a consequence of repeated use of a drug, larger and larger doses of the drug may be necessary in order to achieve the same effect. This is a consequence of the development of:
A) sensitization B) tolerance C) withdrawal D) cross-tolerance
Concerning body fluid compartments,
A. less than 50% of the total body weight is water. B. more body fluid is contained in extracellular fluid than in intracellular fluid. C. the major influence controlling the movement of water between intracellular and extracellular spaces is osmotic pressure. D. sodium concentration is the primary determinant of water location. E. All of these are correct statements.
Several hypotheses have been proposed to explain the evolutionary origin of viruses. Which of the following does NOT assume that viruses evolved from living cells?
A. Viruses evolved from macromolecules-lipids, proteins, nucleic acids, and carbohydrates. B. Viruses evolved from chromosomal elements. C. Viruses evolved from plasmids that acquired genes for their own replication. D. The precursors of DNA genomes may have been self-replicating RNA molecules. E. Viruses evolved by losing all the genetic information that is not absolutely required for reproduction.