객관식
Which molecules primarily make up the cell membrane (lipid bilayer) in most cells?
88
views
8. Membrane Structure
The Lipid Bilayer
객관식
In the context of the lipid bilayer, which set correctly lists the three main components of a phospholipid?
A
A cholesterol ring structure, two fatty acid tails, and a carbohydrate head group
B
A glycerol backbone, two fatty acid tails, and a phosphate-containing (polar) head group
C
A glycerol backbone, three fatty acid tails, and a phosphate-containing head group
D
A sphingosine backbone, a peptide chain, and a phosphate-containing head group
검증된 단계별 안내1
Step 1: Understand the structure of a phospholipid, which is a major component of the lipid bilayer in cell membranes.
Step 2: Identify the three main parts of a phospholipid: the glycerol backbone, the fatty acid tails, and the phosphate-containing head group.
Step 3: Recognize that the glycerol backbone is a three-carbon molecule that connects the other components.
Step 4: Note that there are two fatty acid tails attached to the glycerol, which are hydrophobic (water-repelling) and help form the interior of the bilayer.
Step 5: The phosphate-containing head group is polar and hydrophilic (water-attracting), facing the aqueous environment inside and outside the cell.
관련 영상
관련 실천
