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Norma-Jean [14]
4 years ago
15

The period during which an excitable membrane can respond again, but only if the stimulus is greater than the threshold stimulus

, is the ________ period.
Biology
1 answer:
ivanzaharov [21]4 years ago
3 0

Answer:

The correct answer is - relative refractory period.

Explanation:

The relative refractory period is a period that stimulates a secondary response if the stimuli are greater than the normal. It occurs when partial repolarization after a nerve fiber fired.

The relative refractory period is one of the two types of the refractory period which is the relative and absolute refractory period. In the absolute refractory period, it is not possible to activate another action potential in membrane.

Thus, the correct answer is -  relative refractory period.

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Answer: c. Transition Reaction

Explanation:

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6 0
3 years ago
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When a singly ionized potassium ion moves through a channel in the membrane passing from the outside to the inside, what is the
Korolek [52]

The magnitude of the work done by the electric field of the membrane is <u>W = 1.28 × 10⁻²⁰ Joules</u>.

We start with the necessity to take into account a value for the voltage present there in order to solve this problem by first considering that the membranes have two layers, one internal and one external, each responsible for producing a potential difference between the two levels.

As a result, in order to find a solution, it is necessary to take into account the potential difference between the two surfaces. In this instance, we'll assume a particular value for the load, but the recipient is free to substitute a different value if they prefer.

The product of the potential difference and the charge is used to define the work that an electric field performs. The charge of the potassium ion will be equal to that of its electron, so,

q = 1.6 × 10⁻¹⁹ Coulombs

Then the Work would be:

W = Vq

Here,

v = Potential difference

q = Charge

The 80mV potential difference we will have is quantified as follows:

W = (80mV (1V/1000mV))( 1.6 × 10⁻¹⁹ C)

W = 1.28 × 10⁻²⁰ Joules is the amount of work that the membrane's electric field has produced.

Find more on work done at : brainly.com/question/25573309

#SPJ4

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One hypothesis about the origin of the building blocks for life is that they I were
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Formed when lightning struck water i believe
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