ENERGY

Question 1

how much kj in 1 kcal?

Answer 1

4.2 kj or 4.184 kj

Question 2

direct method of measuring energy in food

Answer 2

calorimeter

Question 3

indirect method of measuring energy in food

Answer 3

food composition tables and oxycalorimetry

Question 4

principle: energy value of food is amount of energy produced in the body as a result of food metabolism

Answer 4

bomb calorimeter

Question 5

when the energy consumed is equal to the energy expended

Answer 5

energy balance

Question 6

prompts eating

Answer 6

hunger

Question 7

signals to stop eating

Answer 7

satiation

Question 8

lack of hunger

Answer 8

satiety

Question 9

components of energy expenditure

Answer 9

energy out

Question 10

bmr percentage

Answer 10

60-65%

Question 11

Thermal effect of food percentage

Answer 11

10%

Question 12

measurement of heat production as an estimate of metabolic rate

Answer 12

Direct calorimetry

Question 13

measured by determining with a respirometer the oxygen consumption and carbon dioxide production of the body in a given period of time

Answer 13

indirect calorimetry

Question 14

defined by the ratio of co2 production (VCO2) over oxygen (VO2) consumption

Answer 14

Respiratory quotient

Question 15

t/f: underfeeding promotes use of endogenous fat & causes decreases in the RQ

Answer 15

true

Question 16

t/f: overfeeding results in lipogenesis, which increases the rq

Answer 16

true

Question 17

RQ of macronutrients

Answer 17

cho - 1
chon - .82
fats - .70

Question 18

energy metabolism: glucose to glycogen

Answer 18

glycogenesis

Question 19

energy metabolism: glycogen to glucose

Answer 19

glycogenolysis

Question 20

energy metabolism: amino acids to glucose

Answer 20

gluconeogenesis

Question 21

energy metabolism: glucose to FAAs to Fats

Answer 21

lipogenesis

Question 22

energy metabolism: fats to FAAs & glycerol

Answer 22

Lipolysis