What is the correct order of processes involving the movement of oxygen from the environment to mitochondria in vertebrates?
A) ventilation, circulation, cellular respiration
B) circulation, ventilation, cellular respiration
C) diffusion in tissues, cellular respiration, diffusion at respiratory surface
D) ventilation, diffusion in tissues, circulation
E) circulation, cellular respiration, diffusion in tissues
Answer: A) ventilation, circulation, cellular respiration
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Which of the following best describes the process of ventilation?
A) the movement of oxygen gas through the blood of the circulatory system B) the movement of carbon dioxide gas through the blood of the circulatory system C) the movement of the respiratory medium past the respiratory surface D) the diffusion of gases into and out of the circulatory system E) the diffusion of gases into and out of tissues where cellular respiration occurs
The HIV protease has been the target of several anti-HIV medications called protease inhibitors. This antiviral strategy is possible because protease inhibitors _____
A) cause protease to precipitate out of the cell by combining with certain salt solutions B) cleave at specific places in viral polypeptides, resulting in the destruction of reverse transcriptase C) prevent HIV from generating ATP in the host cell D) prevent the formation of active viral proteins
During translation, tRNAs bond to mRNAs using
a. ionic bonds. b. van der Waals forces. c. nonpolar covalent bonds. d. hydrogen bonds. e. polar covalent bonds.
Hybrid breakdown is characterized by:
a. sterility of the progeny of hybrid individuals. b. sterility of hybrid adults. c. death during pregnancy of hybrid females. d. death during early life of hybrid embryos. e. early death of hybrid embryos.