The liver and kidneys must work hard to use protein to meet energy needs because ____.Multiple choice question.proteins require a lot of processing to produce energyproteins are more easily absorbed than carbohydratescarbohydrates are less available than protein as an energy source

Select all that applyThe characteristics of gruel which make it difficult to consume enough to meet energy and protein needs include ____. Multiple select question.low protein densitylow in plant fiberhigh protein densityhigh in plant fiber

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

______ is not an essential nutrient but does supply energy.Multiple choice question.ProteinFatWaterAlcohol

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

Under what conditions will the body use significant amounts of protein for energy during exercise?答案选项组inadequate calorie and fluid intakeinadequate calorie intake and carbohydrate storesinadequate carbohydrate and protein storesinadequate protein stores and fluid intake