Which of the following statements are TRUE? 1-Electron carriers are located at ribosomes. 2-ATP is a common intermediate between catabolic and anabolic pathways. 3-ATP is used for the long-term storage of energy and so is often found in storage granules. 4-Anaerobic organisms are capable of generating ATP via respiration. 5-ATP can be generated by the flow of protons across protein channels
A) 2, 4, 5
B) 1, 3, 4
C) 2, 3, 5
D) 1, 2, 3
E) All of the statements are true.
A
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When sodium chloride dissolves in water, the sodium and chloride ions are pulled into solution by:
A) the attraction of the sodium ions to the positively charged oxygen, and the attraction of the chloride ions to the two negatively charged hydrogens of the water molecules. B) covalent bonds that form between the ions and the water molecules. C) ionic bonds that form between the ions and the water molecules. D) the attraction of the sodium ions to the negatively charged oxygen, and the attraction of the chloride ions to the two positively charged hydrogens of the water molecules.
Tetanus develops from a puncture wound because
A) endospores germinate in anoxic conditions. B) the organism gains access to the circulatory system and then invades the nervous system. C) the organism digests deep connective tissues. D) the organism needs access to the circulatory system and deep connective tissues.
What is/are the most important output(s) of glycolysis?
Which of the following characteristics is shared by the skin and mucous membranes?
A) They are both constantly shedding and replacing cells. B) They both have cilia. C) The outer layers are composed of dead cells. D) Sebum may be present. E) Lysozymes are always present.