What is enclosed in a membrane called the pleura

Lungs

Explanation: The pleura encloses each lung by a double layered serous membrane

i need an image of the diagram

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products