Choose the correct match of glial cell type and function
A) astrocytes — metabolize neurotransmitters and modulate synaptic effectiveness
B) oligodendrocytes — produce the myelin sheaths of myelinated neurons in the peripheral nervous system
C) radial glia — the source of immunoprotection against pathogens
D) Schwann cells — provide nutritional support to non-myelinated neurons
A
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The demographic transition is typically seen
a. when a country moves from an industrial phase into a more agricultural phase. b. as developed countries use more resources. c. when agriculture becomes more efficient. d. when epidemics lead to high death rates. e. as a country moves toward a more industrial phase.
What are the findings that supported the hypothesis that insulin serves as a negative feedback signal in the regulation of body fat?
What will be an ideal response?
Sexual reproduction in eukaryotes increases genetic variation. In prokaryotes, transformation, transduction, and conjugation are mechanisms that increase genetic variation
A fundamental difference between the generations of genetic variation in the two domains is: A) Eukaryotes are able to generate mutations in response to environmental stress while prokaryotes only generate random variation. B) Eukaryotic variation occurs primarily within a single generation while prokaryotic variation occurs over many generations. C) Crossing over is a major mechanism in creating genetic variation in prokaryotes while independent assortment is a major mechanism is eukaryotes. D) Eukaryotic genetic variation occurs with vertical gene transfer while prokaryotic genetic variation occurs with horizontal gene transfer.
DNA microarrays have made a huge impact on genomic studies because they _____
A) can be used to eliminate the function of any gene in the genome B) can be used to introduce entire genomes into bacterial cells C) allow the expression of many or even all of the genes in the genome to be compared at once D) allow physical maps of the genome to be assembled in a very short time