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Phospholipids are built from lipids and phosphate - VCE - SSCE Biology - Question 20 - 2006 - Paper 1
Question 20
Phospholipids are built from lipids and phosphate. They are found in plasma membranes. The diagram that most closely resembles the arrangement of phospholipids in a ... show full transcript
Worked Solution & Example Answer:Phospholipids are built from lipids and phosphate - VCE - SSCE Biology - Question 20 - 2006 - Paper 1
Step 1
The diagram that most closely resembles the arrangement of phospholipids in a plasma membrane is
Answer
The correct answer is B.
Phospholipids have a hydrophilic (water-attracting) 'head' and two hydrophobic (water-repelling) 'tails'. In a plasma membrane, they typically arrange themselves in a bilayer, with the hydrophilic heads facing outward and the hydrophobic tails facing inward.
In option B, the arrangement reflects this typical structure, with the heads arranged outwardly and the tails aligned together, accurately depicting how phospholipids are structured in biological membranes.