An enzyme's specificity can be due to: Group of answer choices amount of substrate available molecular recognition based on structural complementarity the ratio of catalyzed rate to the uncatalyzed rate of reaction. amount of enzyme produced by the cell.

molecular recognition based on structural complementarity

Explanation:

Enzymes work on the basis of a lock and key model. The substrates on which enzymes act are specifically tailored to suit the shape of the enzyme.

As such, the enzyme just fits into the substrate in the same way as the right key fits into a lock.

Hence, molecular recognition based on structural complementarity is the basis for the specificity of enzyme activity.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

i think it's c. i'm not sure but i think so.