Neurons receive, process, and transmit information; however, they cannot function without glia. What are glia, and how do they affect neuronal functioning?
What will be an ideal response?
Glia are nervous system cells that provide nutrients for neurons, maintain an appropriate chemical environment for neuronal signaling in the brain and spinal cord, modulate communication between neurons, and insulate axons.
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Crabs and terrapins have a _____ impact on snail populations while snails have a _____ impact on
cordgrass populations and terrapins have a _____ impact on cordgrass populations.
a. negative; negative; negative b. negative; negative; positive c. negative; positive; negative d. positive; negative; positive e. positive; positive; positive
The basis of most estuarine food webs is: a. anaerobic bacteria
b. primary production. c. pseudofeces. d. detritus.
Density-independent factors that limit population growth include ____.
A. parasites B. temperature C. disease D. competition E. predation
Fluorescence in situ hybridization is another way to visualize the presence of a nucleotide sequence. Which of the following is an advantage of FISH over Northern and Southern blots?
A) Probes are not needed in FISH. B) Fluorophores are not used in Northern or Southern blots. C) There are no advantages to FISH over Northern and Southern blots. D) Blotting is not used in FISH.