DNA, DNA Replication, and protein synthesis 2025

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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 four nitrogenous bases in DNA?

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The four nitrogenous bases in DNA are Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).

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How many base pairs are there in one full DNA twist?

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There are 10 base pairs in one full twist of the DNA double helix.

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What is the process of transcription?

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Transcription is the process by which the information in a DNA sequence is copied into a complementary RNA sequence.

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What is the process of translation?

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Translation is the process by which the sequence of nucleotides in mRNA is read by tRNA to synthesize a protein.

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What are amino acids?

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Amino acids are the building blocks of proteins. There are 20 different amino acids that combine in various sequences to form proteins.

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What is a mutation?

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A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

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What is a nonsense mutation?

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A nonsense mutation is a type of mutation where a single nucleotide change results in a premature stop codon, leading to a truncated protein.

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What is a missense mutation?

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A missense mutation is a type of mutation where a single nucleotide change results in the substitution of one amino acid for another in a protein.

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What is the role of ribosomes in protein synthesis?

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Ribosomes are the cellular structures where proteins are synthesized by translating mRNA into amino acid sequences.