An animal digestive tract that consists of two openings (a mouth and anus) is called an
A) excretory system.
B) alimentary canal.
C) intestine.
D) avian (bird) crop.
Answer: B
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While eating lobster for dinner one night your friend asks what you think might happen if this marine invertebrate, which is normally isosmotic with respect to the surrounding seawater, were to be moved to a bay with a slightly lower salt concentration instead of being caught. You reply that, in order for the lobster to be isosmotic with respect to new environment,
A. it must move water in to match the solute concentration of its new environment. B. it regulates its internal concentration of solutes to match that of its new environment. C. it must move water out to match the solute concentration of its new environment. D. it moves water in or out and regulates its internal concentration of water as needed. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about adaptation to a change in the salinity? What other information is related to the question? 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?
Communal courting areas are called
A. mating structures. B. breeding grounds. C. resource areas. D. territories. E. leks.
Which of the following phrases INCORRECTLY completes the following statement? The Hox complexes of mammals
A. encode genes homologous to those found in the antennapedia and bithorax complexes. B. are located on a single chromosome, similar to what is seen in Drosophila. C. follow the colinearity rule. D. determine cell fate on the anteroposterior axis. E. suggest there is a basic body plan that is followed by all multicellular organisms.
Which of the following does not make a good target for antiviral drugs?
A) viral integration B) viral replication and assembly C) viral attachment D) viral release E) viral penetration