Review (BIO) Quiz: U 3 Concepts 1&2 - Enzymes & Biochem Rxns/ATP

An enzyme speeds up a reaction by

• Absorbing energy
• Lowering the activation energy
• Raising the activation energy
• Releasing energy

In a chemical reaction, a reactant binds to an enzyme at a region known as the

• Active site
• Catalyst
• Product
• Substrate

The elements or compounds that enter into a chemical reaction are called

• Active sites
• Catalysts
• Products
• Reactants

Tags

NGSS.MS-PS1-1

Which phrase best describes an exothermic chemical reaction?

• Does not absorb any energy
• Forms products with higher energy than reactants
• Is in a state of equilibrium
• Releases more energy than it absorbs

Tags

NGSS.HS-PS1-4

Identify the products in this reaction: 6H2O+6CO2→C6H2O6+6O2

• 6H2O and 6CO2
• 6H2O, C6H2O6 and 6O2
• 6CO2 and C6H2O6
• C6H2O6 and 6O2

Tags

NGSS.MS-LS1-7

Chemical reactions that absorb more energy than they release are considered:

• Catalyzed
• Endothermic
• Exothermic
• Metabolic

Tags

NGSS.HS-PS1-4

Enzymes usually end in the letters

• -ase
• -ism
• -ose
• -ic

The molecule that an enzyme binds to is known as its:

• Monomer
• Polymer
• Product
• Substrate

The sum of all chemical reactions that occur in a living organism is:

• Anabolism
• Catabolism
• Homeostasis
• Metabolism

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

In the enzyme-substrate complex pictured below, what is happening during the second picture?

• The catalyzed reaction is releasing a product.
• The enzyme is breaking bonds in the substrate.
• The enzyme is keeping the bonds the same in the substrate.
• The substrate is beginning to bind to the enzyme.