Which three components are common to all amino acids?
an amino group, a carboxyl group, and an r group
an amino group, a phosphate group, and an r group
a five-carbon sugar, a phosphate group, and a nitrogenous base
a five-carbon sugar, an amino group, and a nitrogenous base

Answer: An amino group, a carboxyl group, and an R group.

Explanation:

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explanation:

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image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.