In this exercise, you are matching the definitions to the corresponding terms. Let's break down the definitions and match them correctly:
1. Ribose:
- Definition: A five-carbon sugar that is a key element of ribonucleic acid (RNA).
- Matching letter: E
2. Nucleotides:
- Definition: The building blocks of nucleic acids, consisting of a five-carbon sugar, a phosphate group, and a nitrogenous base.
- Matching letter: D
3. Deoxyribonucleic acid (DNA):
- Definition: A double-stranded helical polymer containing the sugar deoxyribose, a phosphate group, and the bases adenine, cytosine, guanine, and thymine.
- Matching letter: A
4. RNA:
- Definition: A single-stranded nucleic acid containing the sugar ribose, a phosphate group, and the bases adenine, cytosine, guanine, and uracil.
- Matching letter: B
By matching the definitions to the terms based on the descriptions provided, you can correctly associate each term with its corresponding definition. This process will help you understand the characteristics and components of ribose, nucleotides, DNA, and RNA in the context of molecular biology.