DNA and RNA Review

Front

What is the function of mRNA in protein synthesis?

Back

mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where it serves as a template for protein synthesis.

Front

What is a codon and its role in translation?

Back

A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid or a stop signal during protein synthesis.

Front

What are the components of DNA?

Back

DNA is composed of nucleotides, which include a sugar (deoxyribose), a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine).

Front

Where is DNA located in eukaryotic cells?

Back

In eukaryotic cells, DNA is primarily located in the nucleus.

Front

What are the base pairing rules in DNA?

Back

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

Front

What is the structure of DNA often described as?

Back

The structure of DNA is often described as a double helix, resembling a twisted ladder.

Front

What is the role of tRNA in protein synthesis?

Back

tRNA (transfer RNA) transports specific amino acids to the ribosome during protein synthesis, matching its anticodon with the corresponding codon on the mRNA.

Front

What is the significance of the sugar-phosphate backbone in DNA?

Back

The sugar-phosphate backbone provides structural support and stability to the DNA molecule, allowing it to maintain its double helix shape.

Front

What is transcription in the context of gene expression?

Back

Transcription is the process by which the information in a gene's DNA is copied into mRNA.

Front

What is the difference between DNA and RNA?

Back

DNA contains deoxyribose sugar and is double-stranded, while RNA contains ribose sugar and is usually single-stranded.