In a neuron at rest, the membrane is most permeable to
A. sodium.
B. chloride.
C. calcium.
D. potassium.
E. magnesium.
Answer: D
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What are two types of symbiotic relationships in plant roots?
A. Bacteria in root hairs, fungi in root nodules B. Bacteria in root nodules, fungi in root hairs C. Bacteria in mycorrhizae, fungi in root nodules D. Bacteria in root nodules, fungi in mycorrhizae
Which of the following best describes an ocean as an open system?
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What occurs during the follicular phase of the ovarian cycle?
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