All set-point systems are _____________ systems.
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The pathway leading to the perception of sound by mammals begins with the _____
A) hair cells of the organ of Corti, which rests on the basilar membrane, coming in contact with the tectorial membrane B) hair cells of the organ of Corti, which rests on the tympanic membrane, coming in contact with the tectorial membrane C) hair cells of the organ of Corti, which rests on the tectorial membrane, coming in contact with the basilar membrane D) hair cells of the organ of Corti coming in contact with the tectorial membrane as a result of fluid waves in the cochlea causing vibrations in the round window E) hair cells on the tympanic membrane that stimulate the tectorial membrane neurons, leading to the auditory section of the brain
As structural diversity within plant communities increases, the number of animal species ________
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________ is the ability to maintain a relatively constant internal environment
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If the input water is labeled with a radioactive isotope of oxygen, 18O, then the oxygen gas released as the reaction proceeds is also labeled with 18O. Which of the following is the most likely explanation?
(A) During the light reactions of photosynthesis, water is split, the hydrogen atoms combine with the CO2, and oxygen gas is released. (B) During the light reactions of photosynthesis, water is split, removing electrons and protons, and oxygen gas is released. (C) During the Calvin cycle, water is split, regenerating NADPH from NADP+, and oxygen gas is released. (D) During the Calvin cycle, water is split, the hydrogen atoms are added to intermediates of sugar synthesis, and oxygen gas is released.