Siamois and Twin interact in the organizer with the Smad2 transcription factor activated by vegetal TGF-β family members (Nodal-related proteins, Vg1, activin)

TLS Online TPP Program

#Id: 553

#Unit 2. Cellular Organization

Carboxysomes containing bacteria are nitrifying bacteria, cyanobacteria and thiobacilli

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#Id: 5369

#Unit 10. Ecological Principles

Quadrats - A square frame often, but not always, measuring 50 × 50 cm. 

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#Id: 9071

#Unit 4. Cell Communication and Cell Signaling

Feedback mechanisms suppress signaling by the PKA pathway:

1. Intrinsic GTPase activity of Gαs

2. PDE acts to hydrolyze cAMP to 5′-AMP

3. By BARK

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#Id: 2991

#Unit 13. Methods in Biology

Isopycnic separation, centrifugation is continued until the desired particles have
reached their isopycnic position in the liquid density gradient.

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#Id: 976

#Unit 5. Developmental Biology

Siamois and Twin inducing the activation of the neuroepithelium genes –Foxd4 and Sox11