The SH2 domain binds strongly to any peptide containing a critical four-residue core sequence:  phosphotyrosine–glutamic acid–glutamic acid–isoleucine

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#Id: 1145

#Unit 7. System Physiology – Animal

Three cellular layers separate the blood from the glomerular filtrate in Bowman’s capsule: 

1. capillary endothelium

2. basement membrane

3. epithelium of the capsule

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#Id: 2792

#Unit 13. Methods in Biology

Chromatography columns are considered to consist of a number of adjacent zones in each of which there is sufficient space for an analyte to completely equilibrate between the two phases, Each zone is called a theoretical plate (having no N).

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#Id: 3247

#Unit 3. Fundamental Processes

Mutations are also caused by compounds that substitute for normal bases (base analogs) or slip between the bases (intercalating agents) to cause errors in replication. 

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#Id: 972

#Unit 5. Developmental Biology

The “default fate” of the ectoderm is to become neural tissue

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#Id: 6056

#Unit 10. Ecological Principles

Lack of water is the primary factor that determines that an area will be a desert

Hot desert.

Cold desert 

Desert    Location 

Sahara  N. Africa 

Kolahari                      S. Africa 

Coastal Atacama              Peru

Sonoran               North American 

Simpson          Australia