Several times in Earth’s history, land masses have
converged as supercontinents. _________and
__________ are examples. Fill in the blank(s) with the appropriate word(s).
Answer: Gondwan, Pangea
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The oxygen consumed during cellular respiration is involved directly in which process or event?
A) glycolysis B) accepting electrons at the end of the electron transport chain C) the citric acid cycle D) the oxidation of pyruvate to acetyl CoA E) the phosphorylation of ADP to form ATP
Birds and crocodiles share which of the following characteristics?
a. ectothermy b. body hair c. four-chambered heart d. lung design e. light-weight bones
The transduction of sound waves into electrical signals takes place
A. within the middle ear as the vibrations are amplified by the malleus, incus and stapes. B. within the tectorial membrane as it is stimulated by the hair cell. C. as the basilar membrane becomes more permeable to sodium ions and depolarizes, initiating an action potential in a sensory neuron. D. as the basilar membrane vibrates at different frequencies in response to the varying volume of sounds. E. within hair cells as they are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates sensory neurons.
What is an increase in alveolar ventilation to match the demands of increased metabolic activity in the cells called?
A) hypoventilation B) hyperventilation C) hyperpnea D) dyspnea E) hypopnea