Understanding ATP

What role does ATP play in the cell?

• It stores genetic information.

• It acts as the cell's primary energy currency.

• It provides structural support to the cell.

• It functions as a waste product in metabolism.

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

ATP hydrolysis releases energy by breaking bonds between which groups?

• Adenine and ribose

• • Ribose and the alpha phosphate

• Alpha and beta phosphate groups

• Beta and gamma phosphate groups

Tags

NGSS.HS-PS1-4

Which term describes the reaction where ATP hydrolyzes into ADP and an inorganic phosphate (Pi)?

• • Phosphorylation

• • Oxidation

• • Hydrolysis

• • Dehydration synthesis

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What is the ∆G value for ATP hydrolysis under standard cellular conditions?

• • –7.3 kcal/mol

• • –14 kcal/mol

• • +14 kcal/mol

• • 0 kcal/mol

Tags

NGSS.HS-PS1-4

What molecule binds to the sodium-potassium pump during ATP hydrolysis to provide energy for ion transport?

• • ADP

• • Inorganic phosphate (Pi)

• • Glucose

• • Water

Tags

NGSS.HS-PS1-5

Which cellular process uses a significant portion of ATP for ion transport?

• • Glycolysis

• • Photosynthesis

• • Sodium-potassium pump

• • Protein synthesis

How does energy coupling benefit cellular reactions?

• • It allows exergonic and endergonic reactions to occur simultaneously.

• • It stores all free energy for future use.

• • It converts energy to a non-usable form.

• • It eliminates the need for ATP regeneration.

Tags

NGSS.HS-LS1-7

What happens to ATP molecules if not used quickly by the cell?

• • They store more energy

• • They spontaneously dissociate into ADP and Pi, releasing heat

• • They stabilize and form complexes

• • They convert into glucose molecules

What type of reaction allows ATP to transfer energy to the glucose molecule during glycolysis?

• • Phosphorylation

• • Dehydration synthesis

• • Oxidation

• • Reduction

How many sodium ions can the hydrolysis of one ATP molecule move across the membrane if moving one Na+ ion requires 2.1 kcal/mol?

• 1

• 2

• 3

• 4