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It's depends on the size of molecule. big ones cannot pass the membrane while smaller molecules can.
Answer: (B) an integral membrane protein
Explanation:
Integral membrane proteins are deeply embedded in the nuclear membrane. While some integral extend only into the membrane matrix, Some integral proteins span the whole nuclear membrane and are called trans-membrane proteins because the span from the extracellular nuclear membrane to the innercellular membrane. The serve as transport channels.
Answer:The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass. In a physical change, a substance's physical properties may change, but its chemical makeup does not.
Explanation:
