Question:medium
Which of the following is present in the cornea?
Which of the following is present in the cornea?
Show Hint
Pair each GAG with its tissue; the clear cornea uses keratan and this sulfated GAG.
Updated On: Jun 24, 2026
- Hyaluronic acid
- Chondroitin sulfate
- Dermatan sulfate
- Heparan sulfate
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Each glycosaminoglycan has a signature location. Remembering these pairings answers the question directly.
Step 2: Hyaluronic acid goes with synovial fluid and vitreous, dermatan sulfate with skin and vessels, and heparan sulfate with basement membranes.
Step 3: The cornea, by contrast, depends on keratan sulfate together with chondroitin sulfate to hold its collagen lattice in the regular spacing needed for clarity. Of the four choices, only chondroitin sulfate fits the cornea.
Step 4: Therefore the GAG present in the cornea is chondroitin sulfate.
\[\boxed{\text{Chondroitin sulfate}}\]
Step 2: Hyaluronic acid goes with synovial fluid and vitreous, dermatan sulfate with skin and vessels, and heparan sulfate with basement membranes.
Step 3: The cornea, by contrast, depends on keratan sulfate together with chondroitin sulfate to hold its collagen lattice in the regular spacing needed for clarity. Of the four choices, only chondroitin sulfate fits the cornea.
Step 4: Therefore the GAG present in the cornea is chondroitin sulfate.
\[\boxed{\text{Chondroitin sulfate}}\]
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