2023_DNA 1.1.5 and 1.1.6

Front

What are prokaryotic cells?

Back

Prokaryotic cells are unicellular organisms that do not have a nucleus or membrane-bound organelles. They include bacteria.

Front

What are eukaryotic cells?

Back

Eukaryotic cells are organisms that have a nucleus and membrane-bound organelles. They include plant, animal, fungi, and protist cells.

Front

What is the function of restriction enzymes?

Back

Restriction enzymes cut DNA at specific nucleotide sequences known as recognition sites.

Front

What is gel electrophoresis used for?

Back

Gel electrophoresis is a technique used to separate DNA fragments based on their size.

Front

What charge does DNA carry?

Back

DNA carries a negative charge due to its phosphate backbone.

Front

In gel electrophoresis, which direction does DNA migrate?

Back

DNA migrates towards the positive end of the gel.

Front

How do larger DNA fragments behave in gel electrophoresis compared to smaller fragments?

Back

Larger DNA fragments travel slower than smaller fragments through the gel.

Front

What are purines?

Back

Purines are a type of nitrogenous base in DNA, specifically adenine (A) and guanine (G).

Front

What are the two main types of cells?

Back

The two main types of cells are prokaryotic and eukaryotic cells.

Front

What is the significance of the recognition site in DNA?

Back

The recognition site is a specific sequence where restriction enzymes cut the DNA.