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TLS Online TPP Program

#Id: 761

Sigma factor ensures that bacterial RNA polymerase initiates transcription from specific sites, also reduces binding to nonspecific sequences.

#Unit 3. Fundamental Processes #Sigma factor, Initiation and Elongation of bacterial transcription #Part B Pointers
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TLS Online TPP Program

#Id: 7569

#Unit 6. System Physiology – Plant

Cytokinin maintains meristem by controlling cell division
 Deficient mutants – lonely guy (LOG)/STM
 Gene activates cytokinins
TLS Online TPP Program

#Id: 5799

#Unit 7. System Physiology – Animal
TLS Online TPP Program

#Id: 8573

#Unit 2. Cellular Organization

In all epithelia, keratin filaments associate with: Desmosomes (cell–cell contact)
Hemidesmosomes (cell–matrix contact)
TLS Online TPP Program

#Id: 10057

#Unit 4. Cell Communication and Cell Signaling

Adhesion receptors mediate cell-matrix adhesions
TLS Online TPP Program

#Id: 4312

#Unit 11. Evolution and Behavior

Dollo’s law: A biological generalization positing that complex characters, once lost in evolution, are extremely unlikely to reappear and thus the loss of complex characters is virtually always irreversible.