<h2><em>Proteins are large, complex molecules that play many critical roles in the body. ... Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. There are 20 different types of amino acids that can be combined to make a protein</em></h2>
Answer: Even though fats are the most energy dense of the three energy yielding nutrients ,carbohydrates which provide four calories /gram are your body's first choice for energy especially immediate energy.
