FEN 1 functions as an endonuclease, but it also has a 5 '-3' exonuclease activity. In DNA repair reactions, FEN 1 may cleave next to a displaced nucleotide and then use its exonuclease activity to remove adjacent material.

TLS Online TPP Program

#Id: 4454

#Unit 13. Methods in Biology

Negative staining- heavy metal coats the grid but is excluded from the regions where the sample has adhered.

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#Id: 648

#Unit 3. Fundamental Processes

1 roentgen unit is a quantity of X ray that produces 2.083X109 ion pairs in one cubic centimeter of air at 0C and a pressure of 760 mm of mercury.

TLS Online TPP Program

#Id: 3267

#Unit 3. Fundamental Processes

Bruce Ames of the University of California at Berkeley devised a simple test for the potential carcinogenic effects of chemicals based on their capacity to cause mutations in the bacterium Salmonella typhimurium.

TLS Online TPP Program

#Id: 5529

#Unit 7. System Physiology – Animal

In late proximal convoluted tubule High tubular fluid Cl− concentration is the driving force for reabsorption

TLS Online TPP Program

#Id: 9284

#Unit 6. System Physiology – Plant

O2‐binding plant protein Lb plays an active role in regulating and delivering O2 in the infected cells

Bacterial respiration is the major O2 sink