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As (a) can not pass through the non pola...

As (a)_____ can not pass through the non polar lipid bilayer, they require (b)____to facilatate their transport across the membrane.

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To answer the question, we need to fill in the blanks based on the information provided in the video transcript. ### Step-by-Step Solution: 1. **Identify the type of molecules that cannot pass through the non-polar lipid bilayer:** - The video mentions that polar molecules cannot cross the hydrophobic (non-polar) interior of the lipid bilayer. Therefore, we can conclude that the answer for (a) is "polar molecules." 2. **Determine what is needed for these molecules to cross the membrane:** - The video states that polar molecules require carrier proteins to facilitate their transport across the membrane. Thus, the answer for (b) is "carrier proteins." ### Final Answers: (a) polar molecules (b) carrier proteins
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