Cells that provide direct protection and physical support to neurons are

A) located only in the spinal fluid.
B) found primarily in lymphatic fluids.
C) myelinated.
D) neuroglial cells.
E) nodes of Ranvier.


D

Biology & Microbiology

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The structures labeled "4" are

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If a sieve tube in a plant becomes blocked, the plant

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Which of the following is not an accessory pigment used to absorb photons that cannot be captured by chlorophyll?

A) ?-carotene B) phycoerythrin C) lutein D) phycochlorophyll E) phycocyanin

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