The human nervous system is broken up into central and peripheral parts. the central system (cns) is made up of
a. the brain and the spinal cord
b. sensory and motor neurons
c. the brain and motor neurons

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a. passive diffusion b. facilitated diffusion c. active transport d. pinocytosis