Complete Questions and Answers Graded
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Do catabolic reactions release or consume energy? - CORRECT ANSWER-Release
Do anabolic pathways release or consume energy? - CORRECT ANSWER-Consume
, Do catabolic pathways rely on oxidized cofactors (like NAD+) to oxidize intermediates, or do they rely on
reduced cofactors (like NADPH) to reduce intermediates? - CORRECT ANSWER-They rely on oxidized
cofactors (like NAD+) to oxidize intermediates
Do anabolic pathways rely on oxidized cofactors (like NAD+) to oxidize intermediates, or do they rely on
reduced cofactors (like NADPH) to reduce intermediates? - CORRECT ANSWER-They rely on reduced
cofactors (like NADPH) to reduce intermediates
What is cellular metabolism? - CORRECT ANSWER-Metabolism is a controlled set of biochemical
reactions that occur in living organisms in order to maintain life
What is the primary function of enzymes, and how are they regulated? - CORRECT ANSWER-
Enzymes speed up chemical reactions. Most notably, the enzyme is not consumed during the reaction
and can be used repeatedly by the cell. Enzymes can also be regulated by a cofactor such that in the
absence of the proper cofactor, enzymes are inactive while in its presence enzymes are active.
What is the difference between catabolism and anabolism? - CORRECT ANSWER-Catabolism is the
process of breaking down larger molecules into useful energy sources whereas anabolism is the building
up or biosynthesis od macromolecules from smaller molecular units into larger complexes, most often
associated with cellular growth and repair
ATP has the energy to ______, while ADP has the capacity to ______ energy. - CORRECT ANSWER-
Donate, accept
Chemotrophs can be subdivided into what two additional subgroups? - CORRECT ANSWER-
Chemotrophs, which acquire energy from preformed chemicals found in the environment, can be
divided into either organotrophs (removing electrons from organic molecules such as glucose) or
lithotrophs, which remove electrons from inorganic molecules
Chemotrophs utilize which form of phosphorylation? - CORRECT ANSWER-Chemotrophs use
oxidative phosphorylation (may also accept substrate level phosphorylation). Oxidative phosphorylation
utilizes the energy released by the chemical oxidation of nutrients to reform ATP