Which of the following is a significant function of the nose?
A) gas exchange B) equilibrium
C) conditioning of inhaled air D) carbonic anhydrase activity
Answer: C
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The first fossils of animals date back to
approximately ___ million years ago.
a. 370 b. 420 c. 470 d. 520 e. 570
In 1999, researchers found that they could create hybrid embryos between two species of sea urchin that had been separated for 10 million years. By treating eggs to remove the jelly coat, the sperm of the other species was able to fertilize. What step of the fertilization process is normally blocked, preventing hybridization between these species?
A. Sperm penetration B. Membrane fusion C. Egg activation D. Nuclear fusion 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 fertilization? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Four of the five answers listed below are characteristics of life. Select the exception
a. ionization b. energy usage c. reproduction d. growth e. cellular organization
Each of the following is a lysosomal storage disease caused by a deficiency in lysosomal enzymes except
A) familial hypercholesterolemia. B) Hurler syndrome. C) Hunter syndrome. D) type II glycogenosis. E) Tay-Sachs disease.