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Quiz 2 Chapters 4 & 5

Quiz 2 Chapters 4 & 5

Q Question 1 2 / 2 pts Why can't energy be recycled? Question 2 2 / 2 pts How do enzymes lower the activation energy needed for a reaction? Question 3 4 / 4 pts Explain 2 differences between lactic acid fermentation and alcohol fermentation. Question 4 3 / 3 pts What is the main reason cellular respiration produces more ATP than fermentation? Question 5 3 / 3 pts Explain why metabolic pathways are NOT considered closed systems.

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Your Answer: Energy cannot be recycled since energy moves from one system to another. As the energy moves through system it undergoes transformations for example light energy to chemical energy in case of photosynthesis, and during this transformations energy is lost.