A74-year-old woman complains of heaviness in her chest, nausea, and sweating that suddenly began about an hour ago. she is conscious and alert, but anxious. her blood pressure is 144/84 mm hg and her heart rate is 110 beats/min. she took two of her prescribed nitroglycerin (0.4-mg tablets) before your arrival but still feels heaviness in her chest. you should:

3points which of these are associated with a sedentary lifestyle? select the two correct answers. a. physical fitness b. lack of energy c. normal bmi o d. increased risk of disease

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.

Which form of birth control good people use without altering hormonal systems are blocking sperm from fertilizing an egg