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[ptraye]

The RU method expresses the biological value of various proteins as a percent of the biological value of egg protein, and biological value is a measure of protein absorption.

We can infer that...

A) The RU method cannot rank any protein higher than egg protein.

B) The RU method assigns a biological value of 100 to egg protein.

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I got this wrong. B is correct. I understand why it is, but why is A wrong?

If egg protein is 100%, how can anything be ranked higher than it?

Thanks.

[tommywallach]

Hey Ptraye,

Things can be higher than 100%. Egg protein is simply being used as a base value, so that other things can be compared to it. If something is absorbed better/more efficiently, it could have an RU of 150, or 1500!

-t

[kenyamlee]

Hi,

Can anyone give a more in depth explanation of how to arrive at the answer?

Is there some way to diagram it?
Or explain why A is wrong?

[tommywallach]

It's an inference question, so there is no core/outline.

I explained why (A) is wrong already. There's no reason to believe that 100 is the maximum something can be. Other proteins could have MORE protein than the egg protein (which is what this measurement uses as a benchmark).

-t