Energy Flow (Part 1)

Enzymes are an example of

• Carbohydrate

• Protein

• Lipid

• Nucleic Acid

An enzyme speeds up a reaction by

• Lowering the activation energy

• Raising the activation energy

• Releasing activation energy

• Absorbing energy

Which phrase best describes and EXOthermic reaction

• Does not absorb energy

• Forms products with higher energy than reactants

• In a state of equilibrium

• Releases more energy than it absorbs

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

• Exothermic

• Catalyzed

• Endothermic

• Anabolic

The spot on a substrate that an enzyme binds to is called

• substrate

• product

• activation energy

• active site

If activation energy is lowered, then

• the reaction will happen faster

• the reaction will happen more slowly

• more energy will be absorbed

Which best describes the function of the ATP molecule?

• absorbs energy

• increases energy

• stores energy

• creates energy

Where does your body get the energy for reattaching a third phosphate to ADP, creating ATP

• from the sun

• from the food you eat

• from nucleic acids

• from breaking ATP

Which part of the cell makes proteins?

• Lysosomes

• Ribosomes

• Golgi Apparatus

• Centrioles

Which macromolecule does your body break down first?

• Lipids

• Proteins

• Carbohydrates

• Nucleic Acids