What important resource do Schwann cells and oligodendrocytes provide to neurons?
A. Ca2+ currents
B. Oxygen
C. Nutrients
D. Physical strength from microtubules
E. Insulating layers of membrane
Answer: E
You might also like to view...
Certain chemicals like DDT undergo biological magnification because
a. reactions within prey convert similar compounds into DDT. b. many smaller prey animals consume DDT as a nutrient. c. consumers store all of the DDT present in the prey they consume. d. more DDT in the environment sticks to larger consumers. e. DDT accumulates in water supplies and larger consumers drink more water.
____ occurs when a change in chromosome number takes place in a single generation
a. Sympatric speciation b. Disruptive selection c. Directional selection d. Hybrid sterility
e. Allopatric speciationFixation of carbon is accomplished by:
a. photosynthetic organisms. b. primary consumers. c. decomposers. d. bacterial decomposers. e. burning of organic matter
There are times when the spleen can be considered to be the primary lymph node.
a. true b. false