Question

The Protein Efficiency Ratio (PER) is defined as

• A. Percentage of absorbed nitrogen retained in the body
• B. Weight gain in body mass (in gram) per gram protein intake
• C. Ratio of essential and non-essential amino acids in a protein
• D. Percent in vitro digestibility of a protein

Hint:

When evaluating protein quality using PER, focus on the weight gain relative to protein intake. A higher PER value indicates better protein efficiency.

Answer 1

The Correct Option is B

The Protein Efficiency Ratio (PER) is a measure used to assess the quality of protein in a diet. It is defined as the ratio of the weight gain in body mass (in grams) to the amount of protein consumed (in grams) during a specific period. It is a commonly used measure for determining how well a protein source supports growth, particularly in animal studies. The correct formula for PER is: \[ \text{PER} = \frac{\text{Weight gain (g)}}{\text{Protein intake (g)}}. \] Final Answer: \[ \boxed{\text{Weight gain in body mass (in gram) per gram protein intake}}. \]