Enzymes

What is the complete name of the 3rd unit in your biology coursebook?

The graph shows energy changes in a chemical reaction. What is the activation energy when an enzyme is NOT added?

Diagram shows an ezperimental set up to investigate the effect of enzyme concentration on the rate of reaction.What is the dependent factor in this experiment?

What is the independent variable for the last experiment you performed in the biology lab?

The activity of human enzymes stosp at very low temperatures. What is this called?

Inhibition of which nhibitor, X or Y, cannot be eased by increasing the substrate concentration?

You are asked to temperature vs volume of oxygen collected graph. Which variable goes to X axis?

What are the products in the reaction catalysed by catalase enzyme?

You are asked to plot time vs volume of oxygen collected graph. Which variable goes to X axis?

Which of the enzymes in the table has the highest affinity for its substrate?

Which hypothesis suggests that the shape of the enzyme changes slightly upon binding the substrate for better fit?

What is the relation of Km to Vmax

This following graph will be used to calculate Km. Which variabl should be on the X axis?

Which variable is on the X axis?

List five factors affecting enzyme activity.

Which enzyme has lower affinity for its substrate?

What do enzymes lower to make rections go faster?

What do competitive inhibitors decrease; Vmax only, Km only or both?

The graph shows how the concentration of components of an enzyme catalysed reaction changes with time. Which line represents the enzyme-substrate complexes?

Which represents the enzyme, lock or key?

Where is the enzyme in this experiment?