Question

Rubisco is arguably the most important enzyme on earth because nearly all life is dependent ultimately on its action. The reactions catalyzed by this enzyme are influenced by (can select more than one option)a. pH

b. substrate concentrationc. Mg2+ concentration

Answer 1

a. pH b. Substrate concentration & c. Mg2+ concentration

Step-by-step explanation:

Rubisco is written like this in that it is normalized to lower case from RuBisCO, a semi-acronym of its full name ribulose-1,5-bisphosphate carboxylase oxygenase.

RuBisCO is a plant enzyme which catalyzes both the fixing of atmospheric carbon dioxide during photosynthesis and the reverse process of photorespiration.

That is, the two main reactions of RuBisCo are CO2 fixation and oxygenation.

The substrate for Rubisco is RuBP and Co2.

The question seeks to examine what conditions affects this oxygenase enzymes.

Altering the pH from pH level 8 will negatively influence the rate of photosynthesis because RuBisCO functions slowly. When the pH slides to 6 or to 10 on the pH scale, RuBisCO will cease working altogether. pH affects the functionality of this enzyme.

Like every other enzyme all the factors above affects the rates of this enzyme's reaction.

Answer 2

a. pH

c. Mg2+ concentration

Step-by-step explanation:

The activation of this enzyme is given by the increase in pH and Mg concentration that causes carbamylation of the enzyme. This increase in ph and Mg occurs in the stroma.