Gas exchange in the lungs occurs as a result of
A) active transport of gases between the blood and the alveolus.
B) facilitated diffusion of gases between the hemoglobin and the alveolus.
C) active transport of gases between hemoglobin and the alveolus.
D) diffusion of gases between the blood and the alveolus.
E) facilitated diffusion of gases between the blood and the alveolus.
D
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The sites of mRNA decapping and degradation in yeast are:
A. M bodies. B. P bodies. C. DD bodies. D. Y bodies.
Archaea reproduce primarily through ____
a. fusion b. binary fission c. sex d. meiosis e. cell joining
Two countries, and _, account for one-third of the human population.
A. Russia; Brazil B. India; Brazil C. China; Russia D. Russia; India E. China; India
What is TRUE about the settlers of Easter Island?
a. The settlers traveled 2000 km across the ocean to arrive there. b. The population of the island peaked at 100,000 people. c. People were already living there when the settlers from Polynesia arrived. d. The island had been settled repeatedly over the years, but nobody stayed until the 1700s.