Download Metabolism_PartI Group work

Bio260 – Spring 2014
North Seattle College
Colleen Sheridan
In-class activity on metabolism, Part I
 Amount of energy. Which of the following processes harvests more energy? Less energy? Rank
them.
o Aerobic respiration
o Anaerobic respiration
o Fermentation
 Back up your answer by including the following key terms: (see Figure 6.7 for help)
• Chemical energy source (use glucose as an example)
• Terminal electron acceptor (use the appropriate acceptor for each process)
• Electrons
• Electron affinities
• What gets oxidized
• What gets reduced
• Oxidation-reduction reaction (redox reaction)
• Energy released
 Why don’t we (and our bacteria) burst into flames when we (they) break down glucose for
energy?
o What are the different metabolic pathways that cells use to harvest energy?
 How do enzymes work?
o In your answer use the following key terms:
 Substrate(s)
 Active site
 Activation energy
 Catalyze (what does it mean “to catalyze” a chemical reaction?)
 Product(s)
o In the picture below, explain why the graph of an enzyme rate of reaction
 goes down to the left of its optimal temperature
 goes down to the right of its optimal temperature