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NLN-PAX Science UPDATED Test Questions and CORRECT Answers
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Cellthe smallest living unit and the basic unit of function and structure for all living things. Nucleuscontains the genetic information, or DNA, and controls the activities of the cell. Plasma (cell) membraneseparates the contents of the cell from the surrounding fluid (interstitial fluid) Semipermeable membranerefers to the selective nature of the plasma membrane. It contains pores and channels that allow only particles of the right size or the right chemical nature to pass through. Interstitial fluidecontains substances such as amino acids, sugars, fatty acids, hormones, neurotransmitters, and salts. Cytoplasmis the fluid matrix found between the plasma membrane and the nucleus that acts as scaffolding for the organelles.
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