Rho-dependent termination sites within a transcription unit are usually masked by translating ribosomes, and therefore rho cannot act on downstream RNA polymerases. 

TLS Online TPP Program

#Id: 1695

#Unit 4. Cell Communication and Cell Signaling

RAG1 is the predominant recombinase; it forms a complex with the RSS that is stabilized by the binding of RAG2.

RAG2 by itself does not exhibit detectable RSS binding activity

TLS Online TPP Program

#Id: 8709

#Unit 1. Molecules and their Interaction Relevant to Biology

Malonate is an analog of succinate not normally present in cells, is a strong competitive inhibitor of succinate dehydrogenase, and its addition to mitochondria blocks the activity of the citric acid cycle.

TLS Online TPP Program

#Id: 3497

#Unit 12. Applied Biology

Haploid plants can be produced in large numbers by anther and ovary cultures and from interspecific crosses.

TLS Online TPP Program

#Id: 5277

#Unit 7. System Physiology – Animal

Large quantities of positive potassium ions diffuse out of the SA node.

TLS Online TPP Program

#Id: 400

#Unit 2. Cellular Organization

MacroH2A is nearly three times larger than conventional H2A, and contains a large C-terminal tail that is not related to any other histone.