Question

lipids are a diverse group of biological macromolecules that include triglycerides, phospholipids, waxes, and steroids. the structure of each type of lipid impacts its function. determine whether each statement is true or false.
the structure of a lipid impacts its properties.
a gram of protein supplies more energy than a gram of fat.
lipids are mostly hydrophobic.
(table with true and false columns and radio buttons for each statement)

Explanation:

1. "The structure of a lipid impacts its properties."

In biology/biochemistry, the structure - function (or structure - property) relationship is fundamental. Different lipid structures (e.g., triglycerides vs. phospholipids) lead to different chemical and biological properties (e.g., energy storage vs. membrane formation). Thus, this statement is true.

1. "A gram of protein supplies more energy than a gram of fat."

Fats (lipids) provide more energy per gram ($\approx 9$ kcal/g) than proteins (or carbohydrates, $\approx 4$ kcal/g). So a gram of fat supplies more energy than a gram of protein, making this statement false.

1. "Lipids are mostly hydrophobic."

Lipids are largely composed of non - polar hydrocarbon chains or rings. Hydrophobic substances repel water (polar), and the non - polar nature of most lipid components makes them mostly hydrophobic (e.g., fats, waxes, steroids have significant non - polar regions). Thus, this statement is true.

Answer:

1. For "The structure of a lipid impacts its properties.": True
2. For "A gram of protein supplies more energy than a gram of fat.": False
3. For "Lipids are mostly hydrophobic.": True