You Have Been Given the Job of Searching for Naturally

Multiple Choice

You have been given the job of searching for naturally occurring catalysts. All of the following were isolated from the environment. Which would be an example of a catalyst?

A) a protein being converted into a glycoprotein by the addition of sugars
B) a protein converting glucose and fructose into sucrose without being changed itself
C) glucose and galactose binding to form lactose
D) the addition of a phosphate group to a protein increasing its rate of reaction.