Sodium and Potassium Gradients at Rest

Item #7 of 10

Which of the following statements are true for protein molecules?

They are large and unable to move freely through the pores of a neuron's cell membrane.;

They are anions.;

They are found in higher concentration within a neuron's cytoplasm.;

They are found in lower concentration in extracellular fluid outside a neuron.;

All of the alternatives provided are correct.;

CORRECT - Yes, protein molecules are large and negatively-charged. Because of their size they are unable to pass freely through a neuron's cell membrane and are, therefore, found in higher concentration inside the neuron where they are produced.

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		They are large and unable to move freely through the pores of a neuron's cell membrane.;
		They are anions.;
		They are found in higher concentration within a neuron's cytoplasm.;
		They are found in lower concentration in extracellular fluid outside a neuron.;
		All of the alternatives provided are correct.;