MT- Digestive System

Enzymes

• make endergonic reactions proceed spontaneously
• lower the activation energy of a reaction
• are not very specific in their choice of substrates
• are needed in large quantities because they are used up during catalysis

To what category of macromolecules do most enzymes belong?

• carbohydrates
• lipids
• nucleic acids
• proteins

Energy is stored in the bonds of a molecule and energy is released when the bonds are broken.

• True
• False

A catalyst will make a reaction

• stop
• slow down
• speed up
• go in a different direction

Every enzyme,or protein for that matter, works best 98.6 degrees and a pH of 7.

• True
• False

Consider the following equation  H₂0 produces an equal amount of H+ ions and OH- ions.  The pH produced through this reaction will be

• 1
• 5
• 7
• 10

The molecule that an enzymes reacts with is called its _____.

• coenzyme
• cofactor
• metabolic pathway
• substrate

The allosteric site is a region on an enzyme that binds to a protein or other substance during a reaction.

• True
• False

Allosteric enzymes can be regulated through allosteric activators and allosteric inhibitors.

• True
• False

An allosteric inhibitor is also called a _____________ inhibitor.

• competitive
• noncompetitive