Although the membrane of a "resting" neuron is highly permeable to potassium ions, its membrane potential does not exactly match the equilibrium potential for potassium because the neuronal membrane is also ________.

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#Question id: 4710

#Unit 11. Evolution and Behavior

The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.

 Which pair of scientists below would probably have agreed with the process that is depicted by this tree?

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#Question id: 9179

#Unit 9. Diversity of Life Forms

Which of the following types of organisms is likely to have the widest geographic distribution?

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#Question id: 4586

#Unit 11. Evolution and Behavior

 What are adaptations?

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#Question id: 18004

#Unit 9. Diversity of Life Forms

Which of the following flower parts develops into a seed? 

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#Question id: 26473

#Unit 3. Fundamental Processes

rut sites are