Eating can be motivated by hunger or appetite. Classify each of the following scenarios as examples of hunger of appetite.
Scenarios 1: After a 6-mile run, you feel weak and shaky, which are signs of low blood sugar. You stop at a vending machine and get a package of crackers to eat.
Scenarios 2: After eating lunch, you feel satiated. However, when your friend asks you to join him for an ic cream, you get dessert anyway.
Scenarios 3: after a long day of school following by work, you notice your stomach is rumbling. You open the refrigerator and grab a container of yogurt.
Scenario 4: You are up late, studying for an exam. Without realizing it, you ate an entire bag of potato chips while reviewing your flashcards
Hunger: Senario 1 and 3
Appetite: Senario 2 and 4
Phosphocreatine (PCr) is a high-energy compound that can be used to re-form ATP and is useful during bursts of activity that need maximal muscle contraction for at most 60 seconds. Which of the following statements about PCr and exercise is true? Select all that apply.
A) Taking creantine to increase PCr in muscles may improve performance in those who undertake repeated bursts of activity if used in doses of 20 grams per day for 5-6 days following by maintenance dose of 2 games per day.
B) PCr can be stored in large quantities in the muscles
C) PCr can be activated instantly
A and C