Enzymes and ATP

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 called

• exothermic

• catalyzed

• endothermic

• activated

Tags

NGSS.HS-PS1-4

What macromolecule is an enzyme?

• carbohydrates

• proteins

• lipids

• cells

Tags

NGSS.HS-LS1-6

What happens when enzymes are heated to a high temperature?

• The enzymes die.
• The shapes of the enzyme are altered denature
• The enzymes' amino acid sequence changes.
• The enzymes remain the same

What does the "TP" in ATP stand for?

• 2 phosphates
• tri (3) phosphates
• Two proteins
• tri (3) proteins

What is the function of ATP in living things?

• provides energy for cells
• stores genetic information
• provides structure in the nucleus

Tags

NGSS.HS-LS1-7

Using the figure, which parts of the molecule must the bonds be broken to form an ADP molecule?

• A and B
• B and C
• C and D
• all of the above

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Energy is released from ATP when

• a phosphate group is added
• adenine bonds to ribose
• ATP is exposed to sunlight
• a phosphate group is removed

Tags

NGSS.HS-LS1-7

What is a substrate?

• Co-factor

• Co-enzyme

• reactant

• protein

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur