What is the best description of the role of NADH in a cell? Select one: a. A waste product b. A carbohydrate, which stores energy in its many C-C bonds c. A protein that spins allowing hydrogen ions to pass through d. An electron carrier e. A molecule used to directly "power" most of a cell's work, for example active transport and myosin to make muscles to contract. What does the Krebs cycle accomplish? Select one: a. Breaks down larger carbon into smaller carbon molecules b. Generates ATP c. Reduces electron carriers (think of the specific ones you know) d. All of the above

The following chemicals are involved in electron transport. Which of these chemicals has the strongest pull on electrons?  a. NADH b. FADH2 c. O2  d. Ubiquinone

Oxidative phosphorylation requires all of the items listed below except... A. a terminal electron acceptor which is O2 in mitochondria. B. a matrix more positively charged than the inter membrane space. C. the flow of electrons from NADH and QH2 in the membrane. D. enzyme complexes embedded in a membrane. E. ATP synthase in the correct position in the membrane.