The body cavity type for arthropods and mollusk can best be described as _____
A) a coelom
B) a pseudocoelom
C) a reduced coelom
D) no coelom
Answer: C
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Recombinant DNA only occurs when you take DNA from another organism and insert it into a bacterium
A. true B. false
The maximum volume of air that moves in and out of the lungs with forced inhalation and exhalation is the ____
a. vital capacity b. tidal volume c. forced inhalation volume d. forced exhalation volume e. residual volume
What is the importance of crossing-over?
A. It provides extra genetic material for the daughter cells. B. It increases the likelihood that daughter cells contain different genetic material. C. It produces the proteins that are associated with DNA in chromosomes. D. It increases chromosome condensation. E. It separates the homologous chromosomes
Most aquatic animals excrete ammonia, whereas land animals excrete urea or uric acid. What is the most likely explanation for this difference?
a. They have different diets. b. Land animals can get the energy needed to make urea or uric acid. c. Ammonia is very toxic, and it takes a lot of water to dilute it. d. Land animals cannot afford the energy needed to make ammonia. e. Fish need to get rid of ammonia, but land animals need it to live.