IB Biology Topic 2.1-2.6

Front

What is a proteome?

Back

The complete set of proteins expressed by a genome, cell, tissue, or organism at a certain time.

Front

True or False: A proteome is as unique to a person as their genome is.

Back

True

Front

What is the primary structure of a protein?

Back

The sequence of amino acids in a polypeptide chain.

Front

What is the quaternary structure of a protein?

Back

The complex formed by the assembly of multiple polypeptide chains.

Front

If the percentage of thymine in DNA is 30%, what is the percentage of guanine?

Back

20% (According to Chargaff's rules, A=T and G=C).

Front

Which variable has the least effect on enzyme activity?

Back

Light intensity.

Front

Define enzyme activity.

Back

The rate at which an enzyme catalyzes a reaction.

Front

What factors affect enzyme activity?

Back

Temperature, pH, substrate concentration, and enzyme concentration.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed.

Front

What is the significance of the active site of an enzyme?

Back

The active site is the region where substrate molecules bind and undergo a chemical reaction.