The evolution of which tissue layer allowed an
increase in complexity of animal body organization?
a. ectoderm
b. mesoderm
c. endoderm
d. protocell
e. Trichoplax
Answer: b
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A significant increase in the amount of interstitial fluid surrounding the capillary beds of a human's lungs will cause _____
A) an increase in the amount of carbon dioxide moving from the blood to the lungs B) an increase in the amount of oxygen moving from the lungs into the blood C) a decrease in the amount of oxygen moving from the lungs into the blood D) an increase of pressure that would cause the capillary beds to burst E) a decrease in the amount of work needed for effective ventilation of the lungs
Any substance that is part of a metabolic reaction is called a(n)
a. reactant. b. end product. c. substrate. d. intermediate. e. ATP pump.
Mitochondria are transmitted from mothers to ____
a. all of their daughters through the cytoplasm of the egg b. all of their sons through the cytoplasm of the egg c. all of their children through the cytoplasm of the egg d. 50% of their children through the X chromosome e. 50% of daughters through the X chromosome
A marine biologist designs a study to measure net primary productivity in the world's oceans. She travels to the coastal zone of each continent, takes measurements from north, south, east, and west points along the continent, and combines her data into a
global average. Will these measurements be accurate? A) No, because ocean life is greatest near the poles and decreases toward the equator. B) Yes, but only if she is sure to sample different climatic zones carefully, because production in different climatic zones may vary by an order of magnitude. C) Yes, because although production in different climate zones differs, the open ocean is well mixed because of strong ocean circulation patterns. D) No, because ocean productivity is greatest past the intertidal zone. E) No, because the continental edges have much higher productivities than the open ocean.