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NTR 555 Final exam questions &
verified answers
doubly labeled water-correct-answer-look at carbon dioxide production
inject with H2O, hydrogens labeled with diterium, Oxygen- O 18
detect these in mass spec
as pyruvate --> citrate in TCA, gives off CO2, hydration- water adds into reaction
o 18 in expired CO2
over time, O 18 decrease due to normal excretion
H2 is just water,
extra is the carbon dioxide
see how much CO 2 produced
energy expenditure
label hydrogen and oxygen
water equilibrates
lose oxygen quicker since equilibrates with carbon dioxide
do washout curve
Factors that Influence RMR-correct-answer-increase with weight
increase with fat free mas
increase with fat mass
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down with age
increase male vs female
genetics- families similar
ethnicity- AA decrease by 10%
trained vs. non trained
body temperature
dieting and starvation
feasting and over eating increase
menstrual cycle; growth and pregnancy
as well as hormones
sleep metabolic rate changes during menstrual cycle-correct-answer-higdrop in
late follicular, increase in early/ late luteal
diet and exercise effects on RMR-correct-answer-high flux- 90 min x 75% of VO2
max, intake to balance
low flux= 3 days of rest, intake to main energy balance
body weight doesn't change
more active- have higher RMR
negative balance- HF exercise with rest diet (higher than rest, but not as high as
food)
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positive balance- no exercise, at rest, but getting high calories, lower RMR than
negative
how many calories does make a difference
trained vs. untrained indiv-correct-answer-increases
also EPOC- increases after workout for trained high intensity- more after
body composition overview- what are the different types?-correct-answer-body
composition can be analyzed at the
1) atomic level--> O, C, H (organic); calcium, sodium other minerals etc
2) molecular--> water, lipid, protein
3) cellular--> fluid- water, in ECF, cell mass, extracellular solid
4) tissue system--> muscle, bone, fat
whole level of body composition why does it matter?-correct-answer-size-->
stature and mass
vs. shape (fat to height)
-->endomorph (short, fat)
--> mesomorph (middle)
--> ectomorph (tall and thin)
dimension
NTR 555 Final exam questions &
verified answers
doubly labeled water-correct-answer-look at carbon dioxide production
inject with H2O, hydrogens labeled with diterium, Oxygen- O 18
detect these in mass spec
as pyruvate --> citrate in TCA, gives off CO2, hydration- water adds into reaction
o 18 in expired CO2
over time, O 18 decrease due to normal excretion
H2 is just water,
extra is the carbon dioxide
see how much CO 2 produced
energy expenditure
label hydrogen and oxygen
water equilibrates
lose oxygen quicker since equilibrates with carbon dioxide
do washout curve
Factors that Influence RMR-correct-answer-increase with weight
increase with fat free mas
increase with fat mass
,2|Page
down with age
increase male vs female
genetics- families similar
ethnicity- AA decrease by 10%
trained vs. non trained
body temperature
dieting and starvation
feasting and over eating increase
menstrual cycle; growth and pregnancy
as well as hormones
sleep metabolic rate changes during menstrual cycle-correct-answer-higdrop in
late follicular, increase in early/ late luteal
diet and exercise effects on RMR-correct-answer-high flux- 90 min x 75% of VO2
max, intake to balance
low flux= 3 days of rest, intake to main energy balance
body weight doesn't change
more active- have higher RMR
negative balance- HF exercise with rest diet (higher than rest, but not as high as
food)
, 3|Page
positive balance- no exercise, at rest, but getting high calories, lower RMR than
negative
how many calories does make a difference
trained vs. untrained indiv-correct-answer-increases
also EPOC- increases after workout for trained high intensity- more after
body composition overview- what are the different types?-correct-answer-body
composition can be analyzed at the
1) atomic level--> O, C, H (organic); calcium, sodium other minerals etc
2) molecular--> water, lipid, protein
3) cellular--> fluid- water, in ECF, cell mass, extracellular solid
4) tissue system--> muscle, bone, fat
whole level of body composition why does it matter?-correct-answer-size-->
stature and mass
vs. shape (fat to height)
-->endomorph (short, fat)
--> mesomorph (middle)
--> ectomorph (tall and thin)
dimension
