The pen most likely contains insulin because insulin is a hormone that decreases blood sugar level and is taken in the form of injection by type i diabetic people
geological isolation, if the birds that develop mutations do not have any competition they can survive.
<h3><u>Answer;</u></h3>
d. a neuron recharges before it can fire again.
<h3><u>Explanation;</u></h3>
- <em><u>Refractory periods are a short phase in time following an action potential where another action potential cannot be generated. </u></em>
- <em><u>It is the period immediately following the transmission of an impulse in nerve or muscle, in which a neuron or muscle cell regains its ability to transmit another impulse. </u></em>
- There are two types of refractory period, that is the absolute refractory period and the relative refractory period. Absolute refractory period is the first part of a refractory period during which, the neuron will not fire again no matter how great the stimulation and this only lasts for a short time.
- Relative refractory period occurs when a stronger than usual stimulus is required to trigger the action potential before the neuron returns to resting state.
Use the Scientific Method to Help
<em><u>Found from Sciencebuddies.org</u></em>
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2.147904e+12 is what i got becasue its 33.9 million miles away and if you times 33.9 by 63360 it equals 2.147904e+12 inches
33.9*63360=2.147904e+12 or just 2.147904
hope this helped :)