The insulin receptor is a combination of four subunits held together by disulfide linkages: 

Two alpha subunits 

Two beta subunits

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#Id: 7500

#Unit 4. Cell Communication and Cell Signaling

Light-chain recombination occurs at the small pre-B-cell stage of B-cell development.

TLS Online TPP Program

#Id: 2441

#Unit 3. Fundamental Processes

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

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#Id: 7999

#Unit 10. Ecological Principles

The range of abiotic and biotic conditions under which a species persists is its realized niche. 

The realized niche determines the geographic range of a species or of various populations that compose a species.

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#Id: 10164

#Unit 6. System Physiology – Plant

Gibberellins are synthesized via the terpenoid pathway in three stages in Apical Tissues

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#Id: 8202

#Unit 2. Cellular Organization

Most of the lysosome membrane proteins, are highly glycosylated, which helps to protect them from the lysosome proteases