Biology 1406: Exam 3 questions with answers

Biology 1406: Exam 3 questions with answersautotrophs - correct answer an organism able to build all the complex organic molecules that it requires as its own food source heterotroph - correct answer an organism that cannot derive energy from photosynthesis or inorganic chemicals , and so must feed on other plants and animals, obtaining chemical energy by degrading their organic molecules cellular respiration - correct answer the oxidation of organic compounds to extract energy from chemical bonds dehydrogenation - correct answer chemical reaction that involves the loss of a hydrogen atom, electrons are removed, oxidation hydrogenation - correct answer chemical reaction that involves the gain of a hydrogen atom, electrons are added, reduction nicotinamide adenosine dinucleotide (NAD⁺) - correct answer - cellular respiration a molecules that becomes reduced to NADH as it carries high-energy electrons from oxidized molecules and delivers them to ATP-producing pathways in the cell - acts as an electron acceptor/carrier during each transfer of electrons - correct answer - energy is released - energy may be captures and be used to make ATP or form other chemical bonds - the rest is lost as heat aerobic respiration - correct answer the process that results in the complete oxidation of glucose using oxygen as the final electron acceptor. Oxygen acts as the final electron acceptor for an electron transport chain that produces a proton gradient for the chemiosmotic synthesis of ATP