Can there be multiple active sites on an enzyme?

Yes. Some enzymes will bind a substrate and then there will be a change in its quaternary structure that could open up another active site for a different type of substrate. Other enzymes have more then one of the same active site and they can bind multiples of the same substrate.

How many active sites can enzymes have?

two active sites
Usually, an enzyme molecule has only two active sites, and the active sites fit with one specific type of substrate.

Can an enzyme have more than one substrate?

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. In others, two substrates may come together to create one larger molecule.

What do you mean by active site of an enzyme?

Definition of active site : a region on the surface of an enzyme whose shape permits binding only of a specific molecular substrate that then undergoes catalysis.

How many reactions can enzymes catalyze?

Unlike other catalysts, enzymes are usually highly specific for a particular chemical reaction. They generally catalyze only one or a few types of reactions. Enzymes are extremely efficient in speeding up biochemical reactions. They can catalyze up to several million reactions per second.

What is it called when each enzyme only has 1 substrate that will fit its active site?

Each enzyme only has 1 substrate that will fit its active site. What is this called? reusable. catalyst.

How many substrates can bind in this active site?

Usually, each subunit of an enzyme has one active site capable of binding substrate. The characteristics of an enzyme derive from the sequence of amino acids, which determine the shape of the enzyme (i.e., the structure of the active site) and hence the specificity of the enzyme.

Which one of the following is true about enzymes?

The answer is A. Enzymes increase the rate of chemical reaction by lowering activation energy barriers. Enzymes are biological catalysts.

Which of the following can affect enzyme activity?

Several factors affect the rate at which enzymatic reactions proceed – temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.

How many active sites does an enzyme have?

Usually, an enzyme molecule has only two active sites, and the active sites fit with one specific type of substrate. An active site contains a binding site that binds the substrate and orients it for catalysis.

Can enzymes bind more than one substrate at once?

Yes. Some enzymes will bind a substrate and then there will be a change in its quaternary structure that could open up another active site for a different type of substrate. Other enzymes have more then one of the same active site and they can bind multiples of the same substrate. Just a couple examples.

Do allosteric enzymes have more than one active site?

Allosteric enzymes have more than one active site. These enzymes along with catalytic site also have regulatory site for binding of enzyme-modulators. The allosteric enzymes possess a catalytic site and one or more regulatory sites (also known as allosteric sites).

How are enzymes synthesized from their inactive forms?

The enzymes are synthesized in their inactive form which subsequently converts into the active form. The activity of an enzyme is determined by the amino acid sequence of the primary structure. Substrates bind to the active site of the enzyme in order to specifically accelerate a particular chemical reaction.