Which statement best describes glycosaminoglycan’s function in the skin?

Which statement best describes glycosaminoglycan’s function in the skin?

• A. Water-binding substance between the fibers of the dermis
• B. A structural protein
• C. An enzyme
• D. A mineral

Answer: (A)

Glycosaminoglycans in the skin act as water-binding components in the extracellular matrix, sitting between collagen and elastin fibers and attracting/retaining water to keep the dermis hydrated, plump, and resilient. This humectant-like property helps maintain turgor and smooth texture, which is why they’re key for skin hydration. They’re not structural proteins like collagen or elastin, nor enzymes that drive reactions, and they’re not minerals or inorganic elements. Instead, they’re long sugar chains that, as part of proteoglycans, hold water and contribute to the gel-like matrix that supports the skin’s structure and moisture. Hence, the best description is a water-binding substance between the dermal fibers.

Glycosaminoglycans in the skin act as water-binding components in the extracellular matrix, sitting between collagen and elastin fibers and attracting/retaining water to keep the dermis hydrated, plump, and resilient. This humectant-like property helps maintain turgor and smooth texture, which is why they’re key for skin hydration.

They’re not structural proteins like collagen or elastin, nor enzymes that drive reactions, and they’re not minerals or inorganic elements. Instead, they’re long sugar chains that, as part of proteoglycans, hold water and contribute to the gel-like matrix that supports the skin’s structure and moisture. Hence, the best description is a water-binding substance between the dermal fibers.