Which of the following best explains why enzymes are necessary for many cellular reactions? * 1 point
Enzymes supply the oxygen necessary for the reactions.
The reactions take up too much space in the cell if the enzymes are missing.
Enzymes speed up the reactions by lowering the amount of activation energy
Enzymes change reactants from solid to liquids during the reactions.

Enzymes speen up the reactions by lowering the amount of activation energy. I believe ;')

Explanation:

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…