Which compound is a carbohydrate?(1 point)

Responses

protein
protein

amino acid
amino acid

nucleotide
nucleotide

starch

starch

What makes amino acids unique from one another?(1 point)

the R group

the long strands of glucose molecules

the amino group

the carboxyl group

The compound that is a carbohydrate is starch.

The compound that is a carbohydrate is starch. Now, let me explain how to identify a carbohydrate.

Carbohydrates are biomolecules composed of carbon, hydrogen, and oxygen atoms. They serve as a major source of energy for organisms. To identify a carbohydrate, you can look for the presence of specific functional groups, such as hydroxyl (-OH) groups.

In the given options:
1. Protein is not a carbohydrate. Proteins are composed of amino acids and have a different structure and function.

2. Amino acid is not a carbohydrate. Amino acids are the building blocks of proteins and generally do not possess the characteristic structure of a carbohydrate.

3. Nucleotide is not a carbohydrate. Nucleotides are the building blocks of DNA and RNA and are also structurally different from carbohydrates.

Based on this information, we can conclude that starch is the compound that is a carbohydrate. Starch is a complex carbohydrate found in plants and serves as a storage form of energy.