Cellular Energy and ATP Quiz

What is the main energy currency of cells?

• FADH2

• NADH

• Adenosine triphosphate (ATP)

• Glucose

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NGSS.HS-LS1-7

What is the process called when ATP is broken down to ADP?

• Phosphorylation

• Glycolysis

• Hydrolysis

• Oxidation

Which molecule is regenerated from ADP and inorganic phosphate?

• Glucose

• ATP

• NADH

• FADH2

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NGSS.HS-LS2-3

What is the ΔG for the hydrolysis of ATP under standard conditions?

• -57 kJ/mol

• -30.5 kJ/mol

• -14 kcal/mol

• -7.3 kcal/mol

What is the role of ATP in reaction coupling?

• It acts as a catalyst

• It stabilizes the reaction

• It provides energy through phosphorylation

• It acts as a reactant

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NGSS.HS-LS1-7

Let's make sucrose: What is the shared intermediate in ATP reaction coupling?

• ADP

• Pi

• Sucrose

• Phosphorylated glucose-P molcule

What is the ΔG for the formation of sucrose from glucose and fructose?

• -7.3 kcal/mol

• +14 kcal/mol

• -30 kJ/mol

• +27 kJ/mol

Tags

NGSS.HS-PS1-4

Why is ATP considered unstable?

• Because it is a large molecule

• Due to its low energy content

• Due to its high energy bonds

• Because it is a protein

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NGSS.HS-PS1-4

Which of the following is true? (Generally speaking, in Chemistry, when it comes to isolated bonds)

• Bond breaking is exothermic

• Bond breaking is endothermic

• Bond breaking decreases entropy

• Bond breaking is always endergonic

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NGSS.HS-PS1-4

In your own words: Why is the hydrolysis of ATP releasing energy, even though bond breaking in itself is endothermic (requires energy)?

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