Question

The curve given here shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration). What do the two axes, $X$ and $Y$ represent?

• A. $X$-axis - Substrate concentration, $Y$-axis - Enzyme activity
• B. $X$-axis - Enzyme activity, $Y$-axis - Temperature
• C. $X$-axis - Enzyme activity, $Y$-axis - pH
• D. $X$-axis - Temperature, $Y$-axis - Enzyme activity

Answer 1

The correct option is D $X$-axis - Temperature, $Y$-axis - Enzyme activity

Enzymes are made up of proteins which accelerates the rate of the reaction. It lowers the activation energy and converts the reactants into the substrate. The increased temperature increases the kinetic energy of the enzymes which further accelerates the activity of the enzyme but at the temperature higher than the optimum temperature the enzyme gets denatured as the peptide bonds between the proteins molecules breaks which disrupts the structure of enzymes.

So, the correct answer is option D.