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TLS Online TPP Program

#Id: 3263

DNA is also subject to attack from reactive oxygen species (e.g., O2- , H2O2, and OH†). These potent oxidizing agents are generated by ionizing radiation and by chemical agents that generate free radicals. Oxidation of guanine, for example, generates 7,8-dihydro-8-oxoguanine, or oxoG. 

#Unit 3. Fundamental Processes #DNA damage and repair mechanisms #Part B Pointers
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TLS Online TPP Program

#Id: 10045

#Unit 4. Cell Communication and Cell Signaling

In Notch/Delta pathway, 
Notch is receptor protein, on a neighboring responding cell
TLS Online TPP Program

#Id: 8985

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 6517

#Unit 7. System Physiology – Animal

Phenylethanolamine-N-methyltransferase catalyzes the formation of epinephrine from norepinephrine, is found in appreciable quantities only in the brain and the adrenal medulla
TLS Online TPP Program

#Id: 1640

#Unit 4. Cell Communication and Cell Signaling

To display foreign peptide in class I to show that the cell is infected and to engage with TC cells.
TLS Online TPP Program

#Id: 2065

#Unit 8. Inheritance Biology

Threshold characteristics display only two possible phenotypes—the trait is either present or absent.