Lab Quiz 3

The energy difference between reactants and the transition site/certain amount of initial energy to start chemical reactions.

-(enzymes usually work by lowering the __ so that the reaction can get started)

__ speeds up chemical reactions that are necessary for cells to function.

-biological process depend on these molecular catalysts

-are protein molecules

-basic components of a __ catalyzed reaction are substrate(s), product(s), and the __ itself

-is not changed, destroyed, or "used up" by the reaction

-go to a special place called the active site

The molecule that is changed by the enzyme.

-each enzyme has a specific one

-ex) sucrase breaks its __, sucrose, down into its parts, glucose and fructose

The new substance(s) formed as a result of a chemical reaction.

The special place where enzymes go to bind with substrate molecules/ the pocket within the enzyme where the substrate binds.

-this forms an enzyme-substrate complex

-the overall shape of a protein is critical for the proper contour of the enzyme's __/ if the shape changes too much the enzyme will not be able to bind to the substrate

Breaking of weak linkages/bonds that are responsible for structure.

-usually with heat

-can be damaging, changes the conformation of the enzyme

Organisms produce chemical compounds through enzyme-catalyzed reactions.

-enzymes speed the __ of biological molecules

-usually more complex than degradation reactions

-ex) photosynthesis

Area you see through the microscope.

The distance across the viewfield.

-can find by counting the spaces that you see on the ruler

-usually measured in micrometers and milliliters

Lenses or lens sets remain in focus when the magnification or focal length is changed.

• -Latin: par(equal) and focal