Soil and Water pH Affect the Distribution of Organisms

TLS Online TPP Program

#Id: 2450

#Unit 3. Fundamental Processes

The lac operator overlaps the promoter, and so the repressor bound to the operator physically prevents RNA polymerase from binding to the promoter and thus initiating RNA synthesis.

TLS Online TPP Program

#Id: 2646

#Unit 13. Methods in Biology

A G-less cassette, or stretch of nucleotides lacking guanines in the nontemplate strand, is inserted just downstream of the promoter. This template is transcribed in vitro with CTP, ATP, and UTP, one of which is labeled, but no GTP.

TLS Online TPP Program

#Id: 3127

#Unit 3. Fundamental Processes

One mechanism by which the activity of the replication origin is controlled is DNA methylation. 

TLS Online TPP Program

#Id: 5485

#Unit 10. Ecological Principles

Life History Strategies Incorporate Traits Relating to Survival and Competitive Ability.

TLS Online TPP Program

#Id: 9506

#Unit 6. System Physiology – Plant

P. syringae pv. Syringae (Pss) secrete syringolin A (SylA), a peptide derivative synthesized by a mixed nonribosomal peptide synthetase/polyketide synthetase encoded by a gene cluster.