Which example best demonstrates the principle of specificity? Question 4 options: Push-ups to gain flexibility Pull-ups to decrease body fat Bicep curls to increase muscular strength in biceps Repetitions of heavy weights to increase muscular endurance

What effect do stimulants, such as cocaine, have on the nervous system? o a. stimulants change the activity of neurotransmitters. o b. stimulants mimic hormones and influence moods. o o c. stimulant|mchange how sensory information is processed. d. stimulants decrease brain activity.

Which of the following processes does the body not use protein to perform? a. repairing muscles b. producing hormones c. making hemoglobin d. creating amino acids

Which of the following contains the most calories/gram?