Michael is stuck due to an electric shock generated at the fridge. what should you do to save michael? a. push the fridge away with a non-conducting material and begin cardiopulmonary resuscitation b. push the fridge away from him and begin cardiopulmonary resuscitation c. pull him away from the fridge with a non-conducting material and begin cardiopulmonary resuscitation d. pull him away from the fridge with your hands and begin cardiopulmonary resuscitation

The cardiovascular system, which transports blood through the body, is a one-way system. select the best answer from the choices provided. t f

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.

Active immunity refers to: a. the defenses people are born with. b. temporary immunity granted from another source. c. immunity gained through immunization and exposure to diseases. d. natural immunities that protect humans from other animal diseases