Tatina did the stairmaster at 7:00am. She climbed stairs for about 1 hour. During that time, her heart rate increased and she started to sweat. After, Tatina felt her pulse and counted for 30 seconds. In those 30 seconds, she counted 65 beats. What is Tatina’s BPM?

In which way does nicotine cause addiction? by stimulating the brain’s pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety

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.

According to erikson, a teenager’s challenge is the search for