Complete each statement by filling in the blank. atp is composed of an adenosine molecule and phosphates.

The right answer is three phosphates.

Adenosine (base + sugar) is a nucleoside formed when adenine is attached to a ribose nucleus (as ribofuranose) via a β-N9glucoside linkage.

In biochemistry, adenosine triphosphate, often abbreviated ATP, is a substance produced by all living beings known until now. It is necessary for the metabolism of living beings, since it provides the energy necessary for its chemical reactions. Without ATP, there would be no living organism, because without energy, we can neither move, nor reproduce, nor do anything else necessary for our survival.

ATP is produced continuously, and if its production is interrupted, it causes a rapid death of the organism.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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