As they store a lot more energy, weight for weight.
Lipids have around twice the energy density of carbohydrates, so they are a more efficient means of storage (i.e. only half the mass is needed to store an equivalent amount of energy).
Lipids
Lipids
Carbohydrates and lipids are the two macromolecules responsible for storing and releasing energy in organisms. Carbohydrates are stored in the form of glycogen in animals and starch in plants, while lipids are stored as fats in adipose tissues. When needed, these molecules can be broken down through metabolic processes to release energy for cellular functions.
Its lipids for Plato its D
lipids
Lipids, specifically triglycerides, provide long-term energy storage in the form of fat in animals and oils in plants. These molecules are highly efficient at storing energy because they contain more energy per gram than carbohydrates or proteins.
The carbohydrate molecule is often referred to as the backbone of biological molecules as it is essential for storing and providing energy. However, carbohydrates are often not represented in diagrams of biological molecules for simplification purposes.
The internal energy reserve is starch in plantsSTARCH : actually these starch are excess carbohydrates which are stored in the plant bodyBut in case of animals we have a similar type of storing energy called glycogen but not as same as in the plantsGLYCOGEN : they are stored forms of energy in animals
lipids, carbohydrates, proteins, nucleic acids
The four organic molecules common to organisms are carbohydrates, lipids, proteins, and nucleic acids. These molecules play crucial roles in various biological processes, such as providing energy (carbohydrates), storing energy (lipids), building and repairing tissues (proteins), and storing genetic information (nucleic acids).
Fat and glycogen have different chemical properties. Fat contains more energy for mass than sugars. For birds, who need to be very light to remain aerodynamic, storing a vast majority of the energy as fat is much more efficient.