Consider a typical atp cycle in the body. mc006-1.jpg which statement correctly describes atp synthesis in the body?
atp is synthesized when carbohydrate, protein, and fat molecules are broken down.
atp is synthesized when carbohydrate, protein, and fat molecules are formed.
atp is synthesized when muscle contraction occurs.
atp is synthesized when ion transport occurs.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

How many major plates cover the earth