Phosphorylation of RegA is mediated by sensor histidine kinases/phosphatases which either phosphorylate or dephosphorylate themselves on a histidine residue when a signal molecule binds to their sensor domain.

TLS Online TPP Program

#Id: 6921

#Unit 8. Inheritance Biology

Cri-du- chat syndrome- Deletion on 5, short arm

Wolf– Hirschhorn syndrome- Deletion on 4, short arm

Williams– Beuren syndrome - Deletion on 7, long arm

Prader– Willi syndrome- Deletion on 15 long arm 

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#Id: 3201

#Unit 3. Fundamental Processes

Nucleotide excision repair (NER) systems excise a sequence that includes the damaged base(s). a new stretch of DNA is then synthesized to replace the excised material.

TLS Online TPP Program

#Id: 7092

#Unit 3. Fundamental Processes

It is complementary to a highly conserved sequence close to the 3’ end of 16S rRNA.

The rRNA sequence is the hexamer:

3’. . . U C C U C C . . . 5’

TLS Online TPP Program

#Id: 7784

#Unit 2. Cellular Organization

All proteins found in the nucleus, histones, transcription factors,  DNA & RNA polymerases are synthesized in the cytoplasm and imported into the nucleus through nuclear pore complexes.

TLS Online TPP Program

#Id: 4791

#Unit 13. Methods in Biology

Mean, mode, median, mean deviation, standard deviation, range and quartile deviation are the measures of central tendency and dispersion.