Amino acids contain the elements carbon, hydrogen, oxygen nitrogen, and sometimes sullur Of the 20 amino acids found in humans, 11 are called"nonessential" because they can be manufactured by the body when needed. Which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules? nitrogen hydrogen sulfur carbon oxygen

## Step 1<br />The problem is asking us to identify which elements in the 11 nonessential amino acids are commonly obtained from the metabolism of sugar molecules. <br /><br />## Step 2<br />The metabolism of sugar molecules, also known as glycolysis, produces pyruvate. This pyruvate can then be converted into acetyl-CoA, which is a key component in the citric acid cycle (also known as the Krebs cycle or TCA cycle).<br /><br />## Step 3<br />The citric acid cycle produces high-energy molecules such as ATP, NADH, and FADH2, which are used to fuel the cell's activities. The cycle also produces intermediates that can be used to synthesize various biomolecules, including amino acids.<br /><br />## Step 4<br />The elements in these amino acids that are commonly obtained from the metabolism of sugar molecules are carbon, hydrogen, and oxygen. These elements are part of the basic building blocks of sugar molecules and are thus also found in the amino acids produced from their metabolism.