The table below shows the number of the sub-atomic particles in an atom of nitrogen. sub-atomic particles sub-atomic particle number protons 7 neutrons 7 electrons 7 what is the amu of a nitrogen atom?

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms