Hi all! (first post) 🙂

Im working on this "multiple choise" – test, and there is one question about enzymes that is bugging me.

Which is _not_ correct? :

a) In the transformation of S (substrat) to P (product), an enzyme will push the equilibria towards P.

b) If you lower the temperature for enzyme reactions, the speed of reaction may increase.

So, in my lectures (also i belive i’ve read it somewhere) im thought that higher temperature means faster ezyme- reactions. Also, in my biochemistry book (Lehninger: principles of biochemistry) it says on p. 186, ch. 6.2 under "Enzyme affect reaction rates, not equilibria" that well yeah… "catalysts do not affect reaction equlibria"

and from wikipedia:

"Increases in temperatures speed up reactions. Thus, temperature increases help the enzyme function and develop the end product even faster. However, if heated too much, the enzyme’s shape deteriorates and only when the temperature comes back to normal does the enzyme regain its shape. Some enzymes like thermolabile enzymes work best at low temperatures."

EDIT: seems to me a and b are both incorrect, but there is only one "correct" 🙂 answer! can someone help me? 😕

EDIT 2: i have eliminated the three other possibilities: (S binds to Enz. active site, a "good" enz. reaction happens at high speed, after a single reaction the enzyme is available to catalyse a new reaction)