Enzymes & Chemical Reactions

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

• Activation Energy

• Endothermic Energy

• Exothermic Energy

• Biochemical Energy

Tags

NGSS.HS-PS1-4

Which of the following statements about reactants and products is FALSE?

• The reactants are at the beginning of the chemical reaction

• The products are at the end of the chemical reaction

• Another name for the reactants is the substrate

• Another name for the products is the enzyme

Tags

NGSS.HS-PS1-7

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

In an exothermic reaction...

• Energy is absorbed

• There is a net increase in energy

• There is less energy in the products than the reactants

• There is more energy in the products than the reactants

Tags

NGSS.HS-PS1-4

In Photosynthesis energy is stored as ____________, therefore it is an _____________ reaction.

• Sugar, Endothermic

• Sugar, Exothermic

• ATP, Endothermic

• ATP, Exothermic

Tags

NGSS.HS-LS1-5

In Cellular Respiration, energy is released as _________, therefore it is a _____________ reaction.

• ATP, Exothermic

• ATP, Endothermic

• Glucose, Exothermic

• Glucose, Endothermic

Tags

NGSS.HS-LS1-7

How do enzymes speed up chemical reactions?

• Lower the activation energy

• Increase the temperature

• Lower the pH

• Add a competitive inhibitor

Tags

NGSS.HS-PS1-5

Enzymes are a type of....

• Protein

• Nucleic Acid

• Lipid

• Carbohydrate

Tags

NGSS.MS-LS1-7

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