How do I know I am participating in moderate to vigorous physical activity? A. I know I am participating in moderate to vigorous physical activity by my ability to
dance.
B. I know I am participating in moderate to vigorous physical activity by my ability to do
pushups.
C. I know I am participating in moderate to vigorous physical activity by my ability to talk.

3. to ensure the greatest nutritional benefits, dietary guidelines suggest which of the following? a. washing foods before eating them b. eating nutrient-dense foods c. cooking food thoroughly d. eliminating all snacks from a diet

Which of the following choices are the fat soluble vitamin? a) c b) b6 c) d d) calcium

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.