Answer:
The answer is B: continental drift
Explanation:
The subunit of proteins is one protein molecule that assembles with more protein molecules to make a protein complex.
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Cell membranes are mostly made up of lipids (fats)
The amino acids code for the protein. If one amino acid is changed then the whole protein is changed.
Saturated fatty acids are chains of single bonded carbons surrounded by hydrogen atoms.
Unsaturated fatty acids have bent structures due to double bonding between carbon atoms in the chain. When carbons create double bonds with each other they are no longer able to hold as many hydrogens as a saturated fatty acid
