Examlex
Solve the system using the substitution method. If the system is dependent or inconsistent , or if there is no solution , indicate this.
Purines
Nitrogenous bases with carbon and nitrogen atoms in two attached rings (e.g., adenine and guanine); components of nucleic acids, ATP, GTP, NAD1, and certain other biologically active substances. Compare with pyrimidines.
Pyrimidines
A class of nitrogenous bases found in nucleic acids, including cytosine, thymine (in DNA), and uracil (in RNA).
Carbohydrate
Organic compounds occurring in foods and living tissues, including sugars, starch, and cellulose, serving as a major energy source.
Nucleic Acid
Macromolecules essential for all known forms of life, which include DNA and RNA, and are responsible for storing and transmitting genetic information.
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