Which structural feature of the cell membrane allows molecules such as oxygen and carbon dioxide to diffuse into and out of the cell

phospholipid bilayer

Explanation:

The phospholipid bilayer is a structure of the cell membrane that is semi-permeable and allows molecules to move into and out of the cell. Small uncharged polar molecules such as oxygen and carbon dioxide diffuse into the cell quickly. However, large uncharged polar molecules and ions cannot diffuse into the cell.

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he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation: