The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

Tertiary

Primary

Secondary

Quaternary

During translation

The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

The operon is usually off and has an active repressor

The operon is usually off and has an inactive repressor

The operon is usually on and has an active repressor

The operon is usually on and has an inactive repressor

None of these

Ribozymes

Spliceosomes

Transferases

Hydrolases

Lyases