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TLS Online TPP Program

#Id: 659

Telomeric sequence is the extension of the G-T–rich strand, which for 14 to 16 bases is usually a single strand.


#Unit 3. Fundamental Processes #Telomeres #Part B Pointers
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TLS Online TPP Program

#Id: 9091

#Unit 4. Cell Communication and Cell Signaling

The resultant efflux of NaCl triggers massive water loss through the intestine as cells respond to the ensuing osmotic imbalance causes severe dehydration and electrolyte loss.
TLS Online TPP Program

#Id: 9092

#Unit 4. Cell Communication and Cell Signaling

Pertussis toxin, produced by Bordetella pertussis, catalyzes ADP-ribosylation of the  subunit of Gαi, preventing GDP-GTP exchange and blocking inhibition of adenylyl cyclase.
TLS Online TPP Program

#Id: 9093

#Unit 4. Cell Communication and Cell Signaling

Ligand binding to GPCRs that activate Gαq, leading to activation of phospholipase C
TLS Online TPP Program

#Id: 9094

#Unit 4. Cell Communication and Cell Signaling

Phospholipase C cleaves a phospholipid known as PI(4,5) P2, generating two second messengers: 
diffusible IP3 and membrane-bound DAG
TLS Online TPP Program

#Id: 9095

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 9096

#Unit 4. Cell Communication and Cell Signaling

IP3 triggers the opening of IP3-gated Ca2+ channels in the ER and elevation of cytosolic free Ca2+.