Chromosomal packaging is maintained by supercoiling of DNA in case of bacteria

TLS Online TPP Program

#Id: 1396

#Unit 4. Cell Communication and Cell Signaling

All small GTPases of the Ras superfamily, Cdc42, Rac, and Rho act as molecular switches, inactive in the GDP-bound state and active in the GTP-bound state.

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#Id: 6132

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 5040

#Unit 3. Fundamental Processes

The single replicator 245 bp required for E. coli chromosomal replication is called oriC. Two repeated motifs are critical for oriC function.

The 9-mer motif is the binding site for the E. coli initiator, DnaA, and is repeated five times at oriC.

The 13-mer motif, repeated three times, is the initial site of ssDNA formation during initiation.

TLS Online TPP Program

#Id: 2572

#Unit 7. System Physiology – Animal

Transcellular Pathway

Water and solutes can be transported through the cell membranes by passive diffusion or active transport.

Water and solutes can be transported through the cell membranes by passive diffusion or active transport.

TLS Online TPP Program

#Id: 2483

#Unit 13. Methods in Biology

The polymerization of acrylamide is an example of free-radical catalysis and is initiated by the addition of ammonium persulfate and the base N,N,N′,N′-tetramethylenediamine ( TEMED