A nucleotide is made of which components?

Alberta Grade 9 Science Test: Master your knowledge with our comprehensive practice resources. Featuring engaging flashcards and detailed multiple-choice questions with explanations, get ready to succeed!

Multiple Choice

A nucleotide is made of which components?

Explanation:
A nucleotide contains three parts: a sugar, a phosphate group, and a nitrogen-containing base. The sugar and phosphate form the backbone of the molecule, linking together to build the chain, while the base attaches to the sugar and stores the genetic information. Because the base is essential for the letter-like information carried by DNA or RNA, the complete description should include all three components. The option listed reflects two important parts—sugar and phosphate—but leaves out the base, so it’s not a full description of a nucleotide.

A nucleotide contains three parts: a sugar, a phosphate group, and a nitrogen-containing base. The sugar and phosphate form the backbone of the molecule, linking together to build the chain, while the base attaches to the sugar and stores the genetic information. Because the base is essential for the letter-like information carried by DNA or RNA, the complete description should include all three components. The option listed reflects two important parts—sugar and phosphate—but leaves out the base, so it’s not a full description of a nucleotide.

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