Which one of these is not an example of intercellular communication?
a)a hormone travels through the circulatory system to deliver a signal.
b)a molecule of glucose is produced in a chloroplast.
c)a molecule stimulates a target cell via a receptor.
d)a signaling molecule diffuses through gap junction.
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If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

What will most likely happen when two bromine atoms bond together?

Glucose (c6h12o6) is an important biological molecule. (round the answer to nearest hundredth.) what is the percent by mass of carbon in glucose?