Glutathione probably helps maintain the sulfhydryl groups of proteins in the reduced state and the iron of heme in the ferrous (Fe 2+ ) state, and it serves as a reducing agent for glutaredoxin in deoxy ribonucleotide synthesis.

TLS Online TPP Program

#Id: 909

#Unit 13. Methods in Biology

Tetrazolium compound MTT (3-(4,5-Dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide MTT Assay is calorimetric assay to detect cell division

TLS Online TPP Program

#Id: 705

#Unit 3. Fundamental Processes

Proofreading typically decreases the error rate in replication from10-5 to 10-7 per base pair replicated.

TLS Online TPP Program

#Id: 999

#Unit 5. Developmental Biology

The homologue of TGF-β in Drosophila is Dpp.

TLS Online TPP Program

#Id: 4527

#Unit 11. Evolution and Behavior

There are four known forces that are involved in evolution:

1)mutation,

2) genetic drift

3) gene flow or migration

4) selection.

TLS Online TPP Program

#Id: 10480

#Unit 4. Cell Communication and Cell Signaling

Multi-hit model

LOF mutations in the tumor suppressors APC and p53 and GOF mutation in the oncogene K-RAS establishing that multiple mutations in the same cell are needed for the cancer to form.