Which receptor type is exemplified by opening a channel to let sodium into the cell?
a. intracellular receptor
b. enzyme-linked receptor
c. ion channel-linked receptor
d. endomembrane receptor

Study the image of this rock.which characteristic best supports its formation from sedimentary processes? it has many layers.it is coarse-grained.its grain shape is round.its texture is non-banded.

This is so important ugh its 25 points

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.