A normal tidal volume at rest is approximately ________ mL.
A) 100
B) 500
C) 5000
D) 1000
E) 10,000
Answer: B) 500
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The mutual exchange of DNA between maternal and paternal chromosomes at chiasmata is called ________
Fill in the blank(s) with correct word
One of the cell types that support and assist neurons is ____________________.
A. muscle tissue B. glial cell C. neuron D. nervous tissue E. dendrite
The invasion of the land by amphibians posed a number of challenges requiring evolutionary innovations. Which one of the following does not match a challenge with a corresponding adaptation found in amphibians?
A. Additional oxygen was needed for larger muscles, selecting for the partially divided heart and pulmonary circuit. B. The force of gravity was greater without water's buoying effect, selecting for well-muscled legs. C. Eggs dry out in a terrestrial environment, selecting for the amniotic egg. D. Gills tend to collapse out of the water, selecting for lungs and cutaneous respiration.