exercises involve movements that compress the ankle, knee & hip joints. An example would include jogging on pavement. a. high impact b. calisthenics c. low-impact d. fast-twitch

Nina has the flu and a high fever. her immune system is exhibiting the line of defense. this defense is part of immunity.

What are your thoughts on nonhuman trials? do you feel that testing should be done on animals? what are the advantages and disadvantages with nonhuman trails?

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors. b) transcription from the host cell rna polymerase introduces numerous mutations. c) capsid proteins from the host cell can replace the viral capsid. d) viral rna is translated by host cell ribosomes.