Most of the oxygen in the blood is transported
by
a. plasma.
b. megakaryocytes.
c. platelets.
d. hemoglobin.
e. leukocytes.
D
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Celiac disease is a condition in which the lining of the small intestine is damaged. Which
digestive process is primarily impacted by this disease?
a. nutrient absorption b. chemical breakdown c. production of digestive enzymes d. bile production
How did researchers establish the connection between chimpanzees and humans? How did researchers establish the connection between chimpanzees and humans?
Which of the following interactions is an example of mutualism?
a. nitrogen-fixing bacteria in the root nodules of legumes b. the sea anemone and the pink anemone fish c. all of the choices d. the yucca plant and the yucca moth
Which of the following is not a characteristic differentiating Neanderthals from modern humans?
a. Neanderthals had smaller brains. b. Neanderthals were shorter. c. Neanderthals had larger noses. d. Neanderthals were stronger. e. Neanderthals had projecting brow ridges.