Which definition describes psychoactive drugs?
a. drugs that act as sedatives and slow down activity and make a person calm, sleepy, or even unconscious
b. drugs that are derived from opium as well as drugs that have similar chemicals but are man-made
c. drugs that energize behavior and are often used to a person stay awake, lose weight, or elevate mood
d. drugs that have chemicals that influence perceptions, moods, consciousness, or behavior

Warming up prepares the body for exercise in what way? a. muscularly b. cardiovascularly c. neurologically d. all of the above

Which of the following best reflects what we know about how the flu virus moves between species? a) the flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected. b) a flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans. c) an influenza virus gains new sequences of dna from another virus, such as a herpesvirus; this enables it to be transmitted to a human host. d) an animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates, the virus is passed to a new species such as a bird, and the virus mutates again and can now be transmitted to humans.

Blank is a disease in which the body is unable to make eunough of the hormone insulin to breakdown sugar into energy