Unit 3 Energy Flow Test #1 - Questions

Which phrase best describes an exothermic chemical reaction?

• Does not absorb any energy.

• Forms products with higher bond 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 → C6H12O6 + 6O2

• 6H2O and 6CO2

• 6CO2 and C6H12O6

• C6H2O, C6H12O6, and 6O2

• C6H12O6 and 6O2

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Chemical reactions that absorb more energy than they release are considered to be __________.

• exothermic

• catalyzed

• endothermic

• anabolic

Tags

NGSS.HS-PS1-4

The activation energy needed for a chemical reaction is decreased by the presence of a __________.

• catalyst

• reactant

• product

• substrate

In the enzyme–substrate complex pictured, what is happening during the second image?

• 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.

Tags

NGSS.HS-LS1-7

If the activation energy of a biochemical reaction is lowered, then ______.

• the reaction will happen faster

• the reaction will happen more slowly

• more energy will need to be absorbed

• the rate of the reaction will be unaffected

Tags

NGSS.HS-PS1-4

The molecule that an enzyme binds to is known as its __________.

• substrate

• monomer

• polymer

• complimentary base

Reactants bind to enzymes at the __________.

• substrate

• product

• activation energy

• active site

Which macromolecule found in food will your cells break down first to get ATP?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Which phrase best describes the function of the ATP molecule?

• absorbs energy

• increases energy

• stores energy

• creates energy

Tags

NGSS.HS-LS1-7