Question

Consider the following:

The ΔG0' for the reaction catalyzed by HGD is roughly -80 kcal/mol.
The ΔG0' for the reaction catalyzed by tyrosine deaminase is roughly -1 kcal/mol.
Here are four free energy diagrams. The letter "R" indicates reactants, and the letter "P" indicates products.

Answer 1

i) Which graph best represents the reaction catalyzed by HGD. Choose one from the list below.

a) Graph A b)Graph B c)Graph C d)Graph D
ii) How would the graph that you chose in part (i) be altered in the presence of the enzyme HGD? Choose one from the list below.

a)The free energy of the products would be lowered. b)The free energy of the products would be raised. c)The free energy of the reactants would be lowered. d)The free energy of the reactants would be raised. e)The free energy difference between the products and reactants would be lowered.f) None of the above.
iii) Which graph best represents the reaction catalyzed by tyrosine deaminase? Choose one from the list below.
a) Graph A b)Graph B c)Graph C d)Graph D

Answer 2

The graph for the reaction catalyzed by HDG would look like

A catalyst (like an enzyme) has no effect on the energy of the products, it merely provides an alternative pathway by lowering the activation energy of the reaction.

The graph for the reaction catalyzed by Tyr deaminase would look like

Answer 3

ok, which means that the free energy of the reactant will be lowered.

Answer 4

Is that in reference

"i) How would the graph that you chose in part (i) be altered in the presence of the enzyme HGD? Choose one from the list below."?

Answer 5

its in the second question

Answer 6

yeah