The walls of the seminiferous tubules are lined by primitive germ cells and Sertoli cells, large, complex glycogen- containing cells that stretch from the basal lamina of the tubule to the lumen

TLS Online TPP Program

#Id: 591

#Unit 2. Cellular Organization

Lambda phage chooses fate of lytic cycle under stress such as DNA damage 

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#Id: 6012

#Unit 3. Fundamental Processes

Cdc6 has an ATPase activity that is required for it to support initiation.

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#Id: 6050

#Unit 10. Ecological Principles

Temperate forests 

Temperate forests are largely found between 40° and 60° N of the equator. 

Temperate rain forest (Evergreen): Temperatures are a little cooler, 5–25°C on average, and winters are mild, but there is abundant rainfall, usually exceeding 200 cm a year

Temperate Deciduous Forest (lose their leaves in winter):  Temperatures fall below freezing each winter but not usually below –12°C, and annual rainfall is generally between 75 and 200 cm. Soils are rich in organic and inorganic nutrients, and quite fertile. 

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#Id: 1024

#Unit 5. Developmental Biology

Intermediate levels of BMP effect the formation of the neural crest cells.

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#Id: 10022

#Unit 4. Cell Communication and Cell Signaling

Dissociation of cytosolic complex leads to the stabilization of the full-length Ci, which moves into the

nucleus, displaces the repressor Ci75 from the promoter of target genes, and induces expression of target genes.