While waiting for a signal to contract, a muscle cell membrane maintains a slightly higher positive charge on the outside only because sodium-potassium ATPase pumps are available to generate this difference.
Only because sodium-potassium ATPase pumps are available to provide this difference, a muscle cell membrane maintains a marginally higher positive charge on the outside while waiting for a signal to contract.
To produce an action potential, these sodium pumps can transfer sodium ions across a cell's membrane. The body's muscles can then contract as a result of electrical signals travelling through it.
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Answer: Cell therapies would use stem cells, or cells grown from stem cells, to replace or rejuvenate damaged tissue. Scientists also want to use stem cells to understand disease and find drugs that might treat it. Embryonic stem cells could be used to make more specialized tissues that have been lost to disease and injury.
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Hari passed the exam but Sheela didn't.
The subdural space is the space that exists between the meningeal layer of the dura and the arachnoid mater.
<h3>What is subdural space?</h3>
The subdural space which is also called subdural cavity, is a space within the dura mater that collects blood from the small veins of the brain so we can conclude that subdural space is the space that exists between the meningeal layer of the dura and the arachnoid mater.
Learn more about veins here: brainly.com/question/393019
The answer to your question is D) punctuated equilibrium.
The theory of Punctuated Equilibrium states that extremes in the environment cause sudden evolution; a long period of time precedes the sudden evolutionary changes.
