Which type of active transport is illustrated here?
1.Antiport
2.H+ pumped against its gradient
3.Symport
4.Uptake of cations
1
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Which statement is true?
a. The ratio of carbon dioxide produced to oxygen consumed is greater than one in healthy adults. b. The partial pressure of oxygen in the lungs is greatest just before exhalation. c. The partial pressure of carbon dioxide is greatest in venous blood. d. Partial pressures are the measurement of Hg displacement in the lungs.
Immediately outside the pulp cavity of a tooth is the:a
enamel. b. dentin. c. cementum. d. spongy bone. e. nerve.
During quiet breathing, a person's breathing cycle consists of
A) contraction of inspiratory muscles. B) contraction and relaxation of inspiratory and expiratory muscles. C) contraction of expiratory muscles. D) contraction of inspiratory muscles and relaxation of expiratory muscles. E) contraction and relaxation of inspiratory muscles.
Which of the following is not a process in the scientific method?
A. systematic observation B. belief in a preconceived idea C. formulate a hypothesis D. development of a theory E. laboratory experimentation