While the body is about 68% water, the concentration of water varies within cells due to the presence of densely packed biomolecules. Proteins, carbohydrates, and other solutes fill much of the availa...While the body is about 68% water, the concentration of water varies within cells due to the presence of densely packed biomolecules. Proteins, carbohydrates, and other solutes fill much of the available space, often leaving less room between molecules than the size of a single protein.
Figure 1.2 Mechanisms of Enzyme-Substrate Binding. (A) In the Lock and Key Model, substrates fit into the active site of the enzyme with no further modifications to the enzyme shape required. (B) In t...Figure 1.2 Mechanisms of Enzyme-Substrate Binding. (A) In the Lock and Key Model, substrates fit into the active site of the enzyme with no further modifications to the enzyme shape required. (B) In the Induced Fit Model, substrate interaction with the enzyme causes the shape of the enzyme to change to better fit the substrate and mediate the chemical reaction.
