The synthesis of one molecule of ATP from ADP requires ________ to be translocated across the inner mitochondrial membrane.
A) one proton
B) three protons
C) hundreds of protons
D) 1 mole of protons
B) three protons
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Hair cells in the vertebrate ear are responsible for transducing sound pressure waves. Ion channels in the hair cell membrane open when _____
A) a chemical ligand binds to the ion channel B) light is absorbed by a molecule in the membrane C) the cell membrane reaches a threshold voltage D) the membrane is distorted mechanically
Which of the following is incorrectly paired?
a. villi—increase surface-to-volume ratio for absorption of nutrients b. pancreas—secretes substances that neutralize stomach acid c. gallbladder—produces bile that breaks down fat globules d. colon—functions in water reabsorption
In some attine ants, various species of actinobacteria
a. are used as a food source. b. produce vitamins in the ant gut. c. are used to produce antifungals that protect the ant’s fungal gardens. d. are highly pathogenic, resulting in the destruction of entire ant colonies.
In the eukaryote, the respiratory chain is located in the ___, whereas the majority of ATP is produced by the respiratory chain in the _______ of a prokaryote.
A. Lysosome, flagella B. Golgi body, mitochondria C. Mitochondria, outer membrane space D. Mitochondria, ribosome E. SER, nucleus