When is gene expression blocked in the lac operon system?

Classify the structures as homologous or analogous, depending on their structure and function.

The body of water found at number 4 on the map above is the

Which of the following is not one of the mechanisms of enzyme catalysis by which the substrate is converted to the product? a. changing substrate orientation b. changing substrate reactivity c. inducing strain in the substrate d. preventing an induced fit d. preventing an induced fit