Quizzes for Exam 2

Quizzes for Exam 2 - Quizzes for Exam 2 Quiz 1 Question 1...

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Quizzes for Exam 2 Quiz 1 Question 1 During photosynthesis, plants use light energy to synthesize glucose from carbon dioxide. However, plants do not use up energy during photosynthesis; they merely convert it from light energy to chemical energy. This is an illustration of _________. *-The first law of thermodynamics -increased entropy -chemical equilibrium -a spontaneous reaction -the second law of thermodynamics Question 2 The standard free energy change for the hydrolysis of ATP to ADP + Pi is -7.3 kcal/mol. What can you conclude from this information? -The reaction requires energy *-The reaction is exergonic -The free energy of ADP and phosphate is higher than the free energy of ATP. -The reaction is endergonic Question 3 Metabolic pathways ________. -occur only in the mitochondria *-Are often organized as a multi-step sequence of reactions -Only link smaller molecules together to create polymers -Always break down large molecules into smaller ones -none of these Question 4 Which of the following determines the rate of reaction? -The overall change in free energy -ΔS -ΔG *-The activation energy -ΔH Question 5 The hydrolysis of sucrose to glucose and fructose is exergonic. However, if you dissolve sucrose in water and keep the solution overnight at room temperature, there is no detectable conversion to glucose and fructose. Why?
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-The activation energy of the reaction is high. -The free energy of the products is higher than the free energy of the reactants.
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