A Research Study Is Planned to Determine the Effect of Nutritional

question 28

Multiple Choice

A research study is planned to determine the effect of nutritional supplementation and type of support surface on the rate of wound healing in sacral myocutaneous flap failures. Which is an independent variable in this study? (Select all that apply.)

• A) Rate of wound healing
• B) Sacral myocutaneous flap
• C) Retailer source of protein supplement
• D) Type of support surface
• E) Nutritional supplementation

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Definitions:

Phospholipids

A class of lipids that form the primary structural component of cellular membranes, characterized by a hydrophobic tail and hydrophilic head.

Hydrophilic Region

A part of a molecule that has affinity for water and can form hydrogen bonds with water molecules.

Hydrophobic Region

A part of a molecule that is repelled by water and typically soluble in nonpolar solvents.

Hydrogen Bond

A weak bond formed between a hydrogen atom in one molecule and an electronegative atom, such as oxygen or nitrogen, in another molecule, important in the structure of water and biological molecules.