The principal difference between isometric and isotonic exercises is the
a. use of free weights and weight machines
b. rate of calories burned during exercise
c. change in muscle length during exercise
d. type of muscles exercised

Jennifer is holding performance reviews of all kitchen personnel in her restaurant. what is jennifer’s role in the kitchen?

True or false a fertilized cell divides many times to form an embryo

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.