Biol160 Chapter 12

Front

How does a vaccine work?

Back

It stimulates the immune system.

Front

What is the function of restriction enzymes in their normal bacterial environment?

Back

Restriction enzymes cut DNA from viruses or other species at specific sequences disrupting these genes.

Front

An organism with a gene from a different species is most accurately called:

Back

Transgenic.

Front

What does gel electrophoresis separate DNA fragments based on?

Back

Length.

Front

What proportion of the human genome consists of genes?

Back

0.015.

Front

Define a vaccine.

Back

A biological preparation that provides active acquired immunity to a particular infectious disease.

Front

What are restriction enzymes?

Back

Proteins that cut DNA at specific sequences, used in molecular biology for DNA manipulation.

Front

What is a transgenic organism?

Back

An organism that has been genetically modified to contain a gene from another species.

Front

Explain the principle of gel electrophoresis.

Back

A technique used to separate DNA fragments based on their size by applying an electric field to a gel matrix.

Front

What is the role of the immune system in vaccination?

Back

To recognize and remember pathogens, enabling a faster and stronger response upon future exposure.