Answer:
it allows only some materials to pass through and leave the cell.
Answer:
Many of the baleen eyeglass frames seen in advanced collections probably date from the late 17th to the very early 19th century. ... Whalebone is easy to carve and shape since it has a pliable almost plastic-like property. As such it was used in various manufacturing industries as a forerunner of plastic.
Explanation:
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Answer: DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars
Explanation: