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NR224 EXAM 2 STUDY GUIDE Q & A
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NR224 EXAM 2 STUDY GUIDEQ&A
Nutrition:
1) Define basal metabolic rate & resting energy expenditure BMR is the energy needed at rest to
maintain life- sustaining activities for a specific amount of time. REE is the amount of energy you
need to consume over a 24- hour period for your body to maintain all of its internal working activities
while at rest.
a. When is weight maintained, lost, and gained? (give intake versus outputs for each) From the
kilocalories of food we eat. If we meet the energy requirements, it won’t change; if we exceed,
we gain; if we fail to meet, we lose.
2) Describe the following (what are they, why are they important, examples of each)
a. Carbohydrates: composed of carbon, hydrogen, and oxygen. Main source of energy in the
diet. Main source of fuel for the brain, skeletal muscles during exercise, erythrocyte and
leukocyte production, and cell function of the renal medulla. Examples are sugars, vegetables,
fruits, milk.
b. Proteins: provide a source of energy that is essential for growth, maintenance, and repair of
body tissue.
i. What are the different types of protein? (dispensable, complete) Dispensable: the body
can synthesize, examples are alanine, asparagine, and glutamic acid. Complete: ‘high-
quality’ protein contains all essential amino acids in sufficient quantity to support
growth and maintain nitrogen balance. Indispensable: body doesn’t synthesize so we
, NR224 EXAM 2 STUDY GUIDE
Q&A
need these to be provided in our diet, like histidine.
ii. What type of nitrogen balance is essentials for healing, growth, vital organ function,
etc.? How does protein affect this nitrogen balance? POSITIVE nitrogen balance is
essential for that. Protein
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