A regulatory site that binds more negative regulators than positive regulators to control transcription is called a silencer.

TLS Online TPP Program

#Id: 6298

#Unit 3. Fundamental Processes

The transition from the closed to the open complex involves structural changes in the enzyme and the opening of the DNA double helix to reveal the template and nontemplate strands. This “melting” occurs between positions –11 and +2, with respect to the transcription start site.

TLS Online TPP Program

#Id: 4902

#Unit 13. Methods in Biology

T-test uses means and standard deviations of two samples to make a comparison. The formula for T-test is given below:

TLS Online TPP Program

#Id: 7940

#Unit 2. Cellular Organization

Once the SRP and its receptor have targeted a ribosome synthesizing a secretory protein to the ER membrane, the ribosome and nascent polypeptide chain are rapidly transferred to the translocon.

TLS Online TPP Program

#Id: 6030

#Unit 3. Fundamental Processes

The exonuclease FEN1 removes the RNA primers of Okazaki fragments. The complex of DNA polymerase d and FEN1 carries out the same type of nick translation that E. coli DNA polymerase I carries out during Okazaki fragment maturation

TLS Online TPP Program

#Id: 892

#Unit 13. Methods in Biology

CCG and CGG are the rarest trinucleotides in most A+T-rich bacterial genomes and CTAG is the rarest tetranucleotide in G+C-rich bacterial genomes.