Final answer:
The percentage of Tony's protein from high biological value sources depends on the specific animal proteins he consumed and their biological values. Animal proteins typically have a higher biological value, with eggs and milk being close to 100%.
Step-by-step explanation:
To determine the percentage of Tony's protein that came from high biological value sources, we need to consider the biological value (BV) of the proteins he consumed. The biological value is a measure of protein quality that indicates what proportion of the nitrogen absorbed from the protein is retained in the body.
High BV proteins are usually from animal sources and have values close to 100%, such as eggs and milk, with BV of 94% and 96% respectively. On the other hand, plant proteins often have a lower BV but can be combined to improve their score.
Given the information, if Tony consumed a mixture of proteins from both plant and animal sources, the percentage from high BV sources would depend on the specific foods and their respective BV percentages. If animal proteins make about 1/3rd to 1/2 of his daily protein intake, we could use these proportions along with the BV of the specific animal proteins he consumed to calculate the overall percentage.