Final answer:
Carbohydrates, especially glucose, serve as immediate energy sources, while ATP provides a quick burst of energy for cellular activities.
Step-by-step explanation:
When considering macromolecules that match with short-term energy, carbohydrates, specifically the monosaccharide glucose, are the most common source of energy to fuel the body for immediate needs. Glucose is readily broken down during cellular respiration to produce adenosine triphosphate (ATP), which is used to power a wide array of cellular activities requiring quick energy. For short-term energy storage in the liver and muscles, glucose is compiled into polysaccharides like glycogen. On the other hand, ATP is a smaller, relatively simple molecule that provides a quick burst of energy that is immediately available for cellular processes.