Final answer:
Plant seeds contain mostly unsaturated fats which are liquid at room temperature and healthier, while animal fats are primarily saturated fats, solid at room temperature and can raise cholesterol levels.
Step-by-step explanation:
The oils found in plant seeds and the fats found in an animal's fat cells are both types of lipids, which are essential organic compounds consisting of fatty acids. Despite both being lipids, they differ in their saturation levels. Plant seeds contain oils that are mostly unsaturated fats, which are liquid at room temperature and have at least one double bond in their fatty acid chains, making them healthier for consumption as they help lower blood cholesterol levels. Animal fats, on the other hand, consist primarily of saturated fats, which are solid at room temperature and have no double bonds in their fatty acid chains, thus tending to raise blood cholesterol levels. Phospholipids, another type of lipids, are crucial components of the cell membrane. Consumption of lipids is necessary for energy, but an excess intake can lead to health issues.