Chemical Reactions Enzymes

Change the molecular conformation of a protein to destroy its function.

• Denature

• Coenzyme

• Catalyst

• Activation Energy

Tags

NGSS.HS-LS1-1

How do enzymes speed up chemical reactions?

• Lower the activation energy

• Increase the temperature

• Lower the pH

• Add a competitive inhibitor

What happens when an enzyme is denatured?

• It loses it's shape

• It loses it's function

• It loses BOTH it's shape and it's function

• It becomes a co-enzyme

Which of the following statements about reaction rates is FALSE?

• An increase in temperature increases the rate of a chemical reaction

• A decrease in substrate concentration increases the rate of a chemical reaction

• A competitive inhibitor lower the rate of a chemical reaction

• A co-enzyme increases the rate of a chemical reaction

Tags

NGSS.HS-PS1-5

The amount of energy needed to start a chemical reaction is called...?

• Activation Energy

• Endothermic Energy

• Exothermic Energy

• Biochemical Energy

In an endothermic reaction...

• Energy is absorbed

• Energy is released

• There is a net decrease in energy

• There is less energy in the products than the reactants

Tags

NGSS.HS-PS1-4

Enzymes are a type of....

• Protein

• Nucleic Acid

• Lipid

• Carbohydrate

Tags

NGSS.HS-LS1-1

Enzymes ​ (a)   a chemical reaction by ​ (b)   the ​ (c)   needed to start the reaction.

• speed up

• lowering

• activation energy

• slow down

• raising

• kinetic energy

Enzymes are neither reactants nor products of the reactions they catalyze. Instead, they are ___ after each reaction.

Label the picture that illustrates how an enzyme works.

b

c

d

e

a

Enzyme

Enzyme-substrate complex

Reactants

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