Which one is true of muscle fuel use?Group of answer choicesThey can run only on lipidsThey can run only on carbohydratesThey can run on both carbohydrates and lipids

Which of the following activities metabolizes the highest percentage of carbohydrate as a fuel source?Multiple ChoiceRunning the 200-meter hurdlesWalking for 1 hourLifting weights for 30 minutesHard cycling for 1 hour

Which of the following statements is true for the class of biological molecules known as lipids?Group of answer choicesThey are made from glycerol, fatty acids, and phosphate.They contain less energy than carbohydrates of the same number of carbon atoms.They are polymers made by dehydration reactions.They are insoluble in water.They contain nitrogen.

As physical fitness improves, the ability to use ______ as a fuel for energy increases.Multiple choice question.proteincarbohydratefat

Which of the following statements about lipids is FALSE?Group of answer choicesLipids serve as enzymes in biochemical reactionsLipids are insoluble in waterLipids are major component of cell membranesLipids act as hormones

Fats and carbohydrates are ______ used to meet energy needs.Multiple choice question.primarilyrarelyneveralways