GI and Metabolism

Question 1

What is the nutritional EAR?

Answer 1

Estimated average requirement - half the population usually needs more and half less

Question 2

What is the nutritional LRNI?

Answer 2

Lower Reference Nutrient Intake - sufficient for the few people who have low needs, but not meeting the needs of 97.5% of the population

Question 3

What is the nutritional RNI?

Answer 3

Reference Nutrient Intake - sufficient for about 97.5% of the population

Question 4

What is the nutritional safe intake?

Answer 4

Range for which there is not enough information to estimate the RNI, EAR and LRNI. Sufficient for almost everyone but not so large as to cause undesirable effects.

Question 5

What does energy expenditure depend on?

Answer 5

• Basic metabolic rate

- Amount and intensity of physical activity

Question 6

What is the main source of energy in the body?

Answer 6

Fat stores (80-90%)

Question 7

How much protein does an average adult require?

Answer 7

0.75g per kg per day

Question 8

When does a negative nitrogen balance occur in the body?

Answer 8

intake < excretion

during fasting/illness - body is breaking down proteins for energy

Question 9

When does a positive nitrogen balance occur in the body?

Answer 9

intake > excretion

during growth, pregnancy - body is building new tissue

Question 10

What are the essential amino acids?

Answer 10

Methionine
Valine
Histine
Leucine
Phenylalanine
Tryptophan
Isoleucine
Lysine
Threonine
The 9 anime acids the body can not synthesize and must be obtained by diet