DNA Structure and Function

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What is DNA?

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DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life.

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What is the structure of DNA?

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DNA is a double helix made up of two strands of nucleotides.

Front

What are nucleotides?

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Nucleotides are the building blocks of DNA, consisting of a phosphate group, a sugar (deoxyribose), and a nitrogenous base.

Front

What are the four nitrogenous bases in DNA?

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

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What is the complementary base pairing in DNA?

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Adenine pairs with thymine (A-T) and cytosine pairs with guanine (C-G).

Front

What is a gene?

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A gene is a segment of DNA that contains the instructions for making a specific protein.

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What is a chromosome?

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A chromosome is a long, coiled structure made of DNA and proteins that contains many genes.

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Where is DNA located in a cell?

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DNA is primarily located in the nucleus of eukaryotic cells.

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What is the function of DNA?

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The function of DNA is to store and transmit genetic information.

Front

What happens if the sequence of nucleotides in DNA changes?

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If the sequence of nucleotides changes, it can alter the information encoded in the DNA, potentially affecting the organism.

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