Refer to the accompanying figure. Which structure would carry blood to the systemic (body) circulation?
a. 1
b. 2
c. 6
d. 7
e. 14
d
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Carbon dioxide is the most abundant greenhouse gas in the atmosphere. What is its current concentration?
A. 1.5 ppm B. 1.75 ppm C. 385 ppm D. 560 ppm E. 700 ppm
The lophophore of a brachiopod serves the same function as the __________ in a bivalve.
A. Mantle B. Foot C. Shell D. Gills Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the lophophore? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The breakdown of pyruvate in the Krebs cycle
results in the release of a. energy. b. carbon dioxide. c. oxygen. d. hydrogen. e. all except oxygen.
Prokaryotic cells are smaller than eukaryotic cells. What is a plausible explanation?
A. Prokaryotic cell walls limit their cell growth. B. Eukaryotes are immobile, allowing them to grow larger. C. Prokaryotes lack the genetic material needed for protein synthesis. D. Eukaryotes have compartmentalization, which allows for specialization. E. Prokaryotes have more diverse energy sources.