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Front

What is the role of mRNA in protein synthesis?

Back

mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where proteins are synthesized.

Front

What are nitrogen bases in DNA?

Back

Nitrogen bases are the building blocks of DNA, consisting of adenine (A), thymine (T), cytosine (C), and guanine (G). They pair specifically (A with T, C with G) to form the DNA double helix.

Front

What is the function of helicase in DNA replication?

Back

Helicase is an enzyme that unwinds and separates the two strands of DNA by breaking the hydrogen bonds between the nitrogen bases.

Front

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

Back

The sequence of nitrogen bases determines the genetic code, which dictates the synthesis of proteins and ultimately influences an organism's traits.

Front

What does the term 'amino acid' refer to?

Back

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

Front

What is the start codon in mRNA?

Back

The start codon is AUG, which codes for the amino acid methionine and signals the beginning of protein synthesis.

Front

What is the end codon in mRNA?

Back

The end codons (UAA, UAG, UGA) signal the termination of protein synthesis, indicating that the ribosome should stop translating the mRNA.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains deoxyribose sugar, while RNA is single-stranded and contains ribose sugar. DNA stores genetic information, whereas RNA plays a role in protein synthesis.

Front

What is transcription in the context of genetics?

Back

Transcription is the process by which the information in a segment of DNA is copied into mRNA, which then carries the information to the ribosome.

Front

What is translation in the context of genetics?

Back

Translation is the process by which ribosomes read the sequence of mRNA and assemble amino acids into a polypeptide chain, forming a protein.