Bio Final Review - Chem Rx

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

Chemical reactions that absorb more energy than they release are considered to be (a)   .

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

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 below, what is happening during the third graphic?

• The catalyzed reaction is releasing a product.

• The enzyme breaks 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-PS1-2

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.

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

• substrate
• phosphate

• base

• bond

In the graph an increase in temperature results in

• a decrease in the required activation energy.

• an increase in reaction rate.

• a decrease in the rate of reaction.

• an increase in both the reaction rate and activation energy.

Tags

NGSS.HS-PS1-5

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

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

Tags

NGSS.HS-LS1-7

Which phrase best describes the function of the ATP molecule?

• absorbs energy

• increases energy

• stores energy

• creates energy

Tags

NGSS.HS-LS1-7

Energy is released from an ATP molecule for cellular processes when it

• converts a phosphate group to ADP.

• attaches an extra phosphate group.

• loses a phosphate group.

• produces a sugar molecule.