Distinguish transformation and transfection.

Distinguish transformation and transfection.

• A. Transformation introduces DNA into bacteria; transfection introduces DNA into eukaryotic cells
• B. Transformation uses viral vectors while transfection does not
• C. Both only apply to bacterial cells
• D. They both refer to RNA delivery

Answer: (A)

Transformation and transfection describe different DNA delivery contexts: they are both about getting DNA into cells, but the target cells and typical methods differ. Transformation refers to the uptake of naked DNA by competent bacterial cells, allowing the bacteria to incorporate the DNA into their genome or maintain it on a plasmid. This is a common technique in bacterial genetics and relies on making the bacteria capable of taking up DNA from the environment. Transfection, on the other hand, is the delivery of DNA into eukaryotic cells (such as mammalian cells), which usually requires special methods like lipid-based reagents, electroporation, or viral vectors to cross the cell membrane and, for expression, reach the nucleus. The core distinction is the host cell type: bacteria for transformation and eukaryotic cells for transfection. The answer reflects that by stating that transformation introduces DNA into bacteria and transfection introduces DNA into eukaryotic cells. RNA delivery is not the general goal of these processes, and viral vectors can be used in transfection as well as nonviral methods, so those statements don’t capture the main difference.

Transformation and transfection describe different DNA delivery contexts: they are both about getting DNA into cells, but the target cells and typical methods differ. Transformation refers to the uptake of naked DNA by competent bacterial cells, allowing the bacteria to incorporate the DNA into their genome or maintain it on a plasmid. This is a common technique in bacterial genetics and relies on making the bacteria capable of taking up DNA from the environment. Transfection, on the other hand, is the delivery of DNA into eukaryotic cells (such as mammalian cells), which usually requires special methods like lipid-based reagents, electroporation, or viral vectors to cross the cell membrane and, for expression, reach the nucleus. The core distinction is the host cell type: bacteria for transformation and eukaryotic cells for transfection. The answer reflects that by stating that transformation introduces DNA into bacteria and transfection introduces DNA into eukaryotic cells. RNA delivery is not the general goal of these processes, and viral vectors can be used in transfection as well as nonviral methods, so those statements don’t capture the main difference.