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The bulk of cellular membranes are made of lipids, which keep materials from moving in either direction, while there are proteins stuck in at irregular intervals that selectively allow materials to move in and out.

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14y ago
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11y ago

Hydrogen carbon, and some oxygen. I think it has h20, and amino acids and proteins.

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14y ago

The nucleus of a cell contains primarily DNA molecules. It also has RNA and ribosomes as well as smaller molecules like the ubiquitous water, glucose, oxygen and salts.

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12y ago

proteins and phospholipids make up most of the cell membrane

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Q: What chemical is the cell membrane made up of?
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