Macro Coach Certification Macronutrient Science 5

Question 1

A client wants to gain lean muscle mass. Which macronutrient surplus strategy is best supported by evidence?

Accepted Answer

Modest surplus of 200-500 kcal/day above TDEE with high protein

Answer

A modest caloric surplus of 200-500 kcal combined with adequate protein (1.6-2.2g/kg) optimizes lean mass gain while minimizing excess fat accumulation.

Question 2

What percentage of ingested alcohol (ethanol) is converted to body fat under typical drinking conditions?

Accepted Answer

Less than 5%

Answer

De novo lipogenesis from alcohol is minimal (<5%); alcohol primarily displaces fat oxidation, indirectly promoting fat storage rather than being directly converted.

Question 3

Which protein quality scoring system accounts for both amino acid profile and digestibility using human ileal data?

Accepted Answer

DIAAS (Digestible Indispensable Amino Acid Score)

Answer

DIAAS uses ileal digestibility coefficients for individual amino acids, making it more accurate than PDCAAS which uses fecal digestibility and truncates scores at 1.0.

Question 4

Fructose is metabolized differently from glucose primarily because:

Accepted Answer

Fructose bypasses the rate-limiting enzyme phosphofructokinase in the liver

Answer

Fructose enters glycolysis below the phosphofructokinase checkpoint (at fructose-1-phosphate via fructokinase), bypassing a key regulatory step and enabling rapid, unregulated metabolism.

Question 5

Which scenario best illustrates the concept of protein sparing?

Accepted Answer

Consuming adequate carbohydrates and calories to prevent amino acids from being used for energy

Answer

Protein sparing occurs when sufficient carbohydrate and total energy intake prevent the body from catabolizing amino acids for gluconeogenesis or energy production.

Macro Coach Certification Practice Test

Macro Coach Certification Practice Test

Macro Coach Certification Macronutrient Science 5