[Nathaniel]

What is the question asking me to do when it tells me to list the Physiological implications of an enzymes presence or deficiency.

I look through several dicitonaries but I am still confused.

In other words, can someone tell me what the question is asking?

I appreciate it

[Arkcon]

Yeah, that "presence" bit does kinda muddle the question a bit.  Lets start with "deficiency."  Pick an enzyme that you understand, search around a bit, then write up what would happen if you didn't have that enzyme.

[AWK]

eg Phenylketonuria