The idea that most ecological communities merge into one another gradually is part of the
A. equilibrium model.
B. species-area effect.
C. time hypothesis.
D. organismic model.
E. principle of species individuality.
E. principle of species individuality.
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According to Fig 9.13, phosphate groups play a key role in receptor kinase activation by:
A. activating the receptor so that the receptor is capable of binding its signal. B. activating the dimerization of the receptor kinase proteins in the membrane. C. activating receptor kinase activity. D. providing binding sites to recruit and activate signal-transduction proteins. E. All of these choices are correct.
Which of the following situations in not an example of directional selection? a. Peppered moths in England
b. All of these are examples of directional selection. c. Rock pocket mice in Arizona. d. Antibiotic resistance in bacteria. e. None of these are examples of directional selection.
Which of the following solutes would NOT
leave the vertebrate body under normal conditions? a. uric acid b. ammonia c. urea d. carbon dioxide e. glucose
What potential issue did the introduction of objects to test hypotheses of what is in the black box cause?
A. The loss of tools to test hypotheses on what is in the box. B. The need to revise old hypotheses and create new ones. C. Creating too many possible candidates for what is in the box to be solved during class. D. A potential bias towards the objects presented being what is in the box instead of the best fit judging by your observations alone.