Answer:Variation in traits can be caused by variation in protein molecules within individuals' cells. Protein molecules' structures affect their function and the way they connect to other molecules.
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Answer: presence of L-glycerol in the membrane lipids
Bacteria and eukaryotes have D-glycerol in their membrane lipids.
Explanation:
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Answer:
The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Explanation: