Consider the following chemical reaction:
glucose (C6H12O6) + galactose (C6H12O6) → lactose (C12H22O11)
Which of the following is/are true of this reaction?
1) it is anabolic but not endergonic
2) it is endergonic but not anabolic
3) it is both anabolic and endergonic
4) it is neither anabolic nor endergonic