APP – Thermoregulation: Questions With Suitable
Solutions
Metabolism defined Correct Answer - the SUM of all chemical
reactions within a living organism. An energy balancing act- those
that release energy or those that require energy
The breakdown of substances and the subsequent release of energy
stored in those bonds is known as what? Correct Answer -
catabolism - exothermic
The endothermic portion of metabolism is known as what?
Correct Answer - Anabolism - or the synthesis of substances and
the formation of energy stored in bonds.
What is the SI unit of heat? Correct Answer - calorie - the
quantity of heat needed to raise the temperature of one gram of
water 1*C
We will typically see this as Kcal to quanify body energetics
What is the study used to measure metabolic rate? Correct
Answer - Calorimeter - will measure kcal of heat generated over
a period of time to determine metabolic rate
This is a direct method of measurement
An indirect method of measuring metabolic rate is what? Correct
Answer - oxidation - indirect measurement via measuring the
rate of oxygen consumption since 95% of energy expenditure in the
body involves oxidation reactions
, When 1 carbohydrate is oxidized, what is the heat generated?
Correct Answer - 1 carbohydrate = 5 kcal/L O2 consumed
Oxidized fat generates what about of heat? Correct Answer -
fat = 4.6 kcal/L O2 consumed
Oxidized protein generates what amount of heat? Correct Answer
- protein = 4.6 kcal/L O2 consumed
An adult with an average dietary intake produces what amount of
heat per liter of O2 consumed? Correct Answer - average diet =
4.8 kcal/L O2 consumed
(recall, carb = 5, fat/protein = 4.6)
What is the conversion factor used during spirometry measurement
of O2 consumed? Correct Answer - 4.8 kcal/L O2 consumed
What are the four conditions for measuring BMR? Correct Answer
- 1. awake and at rest
2. no food for at least 12 hours
3. no exercise prior to measurement
4. air temperature 68-80*F
The digestion of protein and the resulting ~30% increase in
metabolic rate is known as what? Correct Answer - specific
dynamic action (SDA) of protein
BMR is highest in which age group? Correct Answer - Neonate
- 2/2 large area to volume ratio.
BMR steeply declines from neonate to age 20 and then more steadily
declines from age 20 onward
Solutions
Metabolism defined Correct Answer - the SUM of all chemical
reactions within a living organism. An energy balancing act- those
that release energy or those that require energy
The breakdown of substances and the subsequent release of energy
stored in those bonds is known as what? Correct Answer -
catabolism - exothermic
The endothermic portion of metabolism is known as what?
Correct Answer - Anabolism - or the synthesis of substances and
the formation of energy stored in bonds.
What is the SI unit of heat? Correct Answer - calorie - the
quantity of heat needed to raise the temperature of one gram of
water 1*C
We will typically see this as Kcal to quanify body energetics
What is the study used to measure metabolic rate? Correct
Answer - Calorimeter - will measure kcal of heat generated over
a period of time to determine metabolic rate
This is a direct method of measurement
An indirect method of measuring metabolic rate is what? Correct
Answer - oxidation - indirect measurement via measuring the
rate of oxygen consumption since 95% of energy expenditure in the
body involves oxidation reactions
, When 1 carbohydrate is oxidized, what is the heat generated?
Correct Answer - 1 carbohydrate = 5 kcal/L O2 consumed
Oxidized fat generates what about of heat? Correct Answer -
fat = 4.6 kcal/L O2 consumed
Oxidized protein generates what amount of heat? Correct Answer
- protein = 4.6 kcal/L O2 consumed
An adult with an average dietary intake produces what amount of
heat per liter of O2 consumed? Correct Answer - average diet =
4.8 kcal/L O2 consumed
(recall, carb = 5, fat/protein = 4.6)
What is the conversion factor used during spirometry measurement
of O2 consumed? Correct Answer - 4.8 kcal/L O2 consumed
What are the four conditions for measuring BMR? Correct Answer
- 1. awake and at rest
2. no food for at least 12 hours
3. no exercise prior to measurement
4. air temperature 68-80*F
The digestion of protein and the resulting ~30% increase in
metabolic rate is known as what? Correct Answer - specific
dynamic action (SDA) of protein
BMR is highest in which age group? Correct Answer - Neonate
- 2/2 large area to volume ratio.
BMR steeply declines from neonate to age 20 and then more steadily
declines from age 20 onward
