Although ATP and NADH are both important activated carrier molecules, ATP hydrolysis provides the direct molecular energy for most biochemical reactions. Why do the mitochondria also need to generate high levels of NADH?
What will be an ideal response?
NADH is an activated carrier molecule used as a cofactor for many enzymes that catalyze redox reactions. NADH also donates electrons to the electron-transport chain, which is essential for the production of ATP.
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Enzymes work with at least three mechanisms. Which of the following is not a mechanism by which enzymes function?
a. putting reactants in close proximity to each other b. altering the free energy (?G) of the reaction c. altering the immediate environment of the reactants to promote reactant interactions d. orienting the reactants so they are positioned to favor the transition state
Which of the following is the best
representation of a testcross?
a. AA x aa b. Aa x aa c. AA x A? d. A? x aa e. AA x a?
These are parasitic flatworms.
A. roundworms B. turbellarians C. flukes D. protozoans
The TCA cycle produces
A. ATP through substrate-level phosphorylation. B. NADH. C. FADH2. D. precursor metabolites. E. All of the choices are correct.