Question
Question 1 (2 points) In the phospholipid bilayer, which part of the membrane creates the hydrophobic region? The phosphate group neither The lipid tails both Question 2 (2 points) Which of the following molecules. would be considered nonpolar? Carboxylic Acid Carbonyls Methyl Group Hydroxyl
Ask by Jimenez Hardy. in the United States
Mar 01,2025
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Answer
Question 1: The lipid tails create the hydrophobic region in the phospholipid bilayer.
Question 2: The methyl group is a nonpolar molecule.
Solution
Question 1 Answer: The lipid tails
Explanation: In the phospholipid bilayer, the hydrophobic (water-fearing) region is created by the fatty acid chains (lipid tails) that line the interior of the membrane. The phosphate groups are hydrophilic (water-loving) and face the aqueous environments outside and inside the cell.
Question 2 Answer: Methyl Group
Explanation: Among the options given, a methyl group is nonpolar. Carboxylic acid, carbonyl, and hydroxyl groups are polar due to their electronegative atoms and bond polarities.
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The lipid tails are the stars of the phospholipid bilayer, creating that cozy hydrophobic region. These long, fatty acid chains avoid water like it's a cold shower, helping to maintain the structure of the membrane and playing a crucial role in cellular function. When it comes to nonpolar molecules, the methyl group takes the crown! Unlike carboxylic acids, carbonyls, and hydroxyls—which all contain electronegative atoms attracting electrons, making them polar—methyl groups happily dance around in a balanced electron hug, keeping things nice and nonpolar in your molecules.
