Which one of the following statements is most accurate? a) passive muscle stimulators expend the same amount of energy from your cells as does exercise. b)drinking liquids during exercise does not cause cramping. c) eating extra protein is a proven way to build stronger muscles. d) wearing extra layers of clothing during exercise in warm weather is an effective way to lose additional weight.

The maximum blood pressure in the upper arm of a healthy person is about 120 mmhg. if a vertical tube open to the atmosphere is connected to the vein in the arm of the person, determine how high the blood will rise in the tube. take the density of the blood to be 1040 kg/m3.

What can friends provide to affect mental health positively? a)peer pressureb)challengesc)conflictd)com panionship

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.