DNA and DNA Replication

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What is DNA?

Back

DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life. It is composed of two strands that coil around each other to form a double helix.

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What are the building blocks of DNA?

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The building blocks of DNA are nucleotides, which consist of a deoxyribose sugar, a phosphate group, and a nitrogenous base.

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What are the four nitrogen bases in DNA?

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The four nitrogen bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

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How do nitrogen bases pair in DNA?

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In DNA, adenine pairs with thymine (A-T) and cytosine pairs with guanine (C-G).

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What is the structure of DNA?

Back

DNA has a double helix structure, resembling a twisted ladder, with the sugar and phosphate forming the sides and the nitrogen bases forming the rungs.

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What is DNA replication?

Back

DNA replication is the process by which a cell makes an identical copy of its DNA before cell division.

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What enzyme is responsible for DNA replication?

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DNA polymerase is the enzyme responsible for synthesizing new DNA strands during replication.

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What is the role of the nucleus in relation to DNA?

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The nucleus is the organelle where DNA is housed and protected in eukaryotic cells.

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What is the significance of the sequence of nitrogen bases in DNA?

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The sequence of nitrogen bases in DNA determines the genetic information and instructions for building proteins.

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What forms the backbone of the DNA molecule?

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The backbone of the DNA molecule is formed by alternating deoxyribose sugar and phosphate groups.