Organisms that are denser than their surrounding water, a variety of adaptations can either reduce an organism’s density or retard its rate of sinking.

TLS Online TPP Program

#Id: 8463

#Unit 1. Molecules and their Interaction Relevant to Biology

Interactions between amino acid residues at the ends of the helical segment and the electric dipole inherent to the  helix.

TLS Online TPP Program

#Id: 5050

#Unit 3. Fundamental Processes

DnaA is an ATP-binding protein.

The first stage in initiation is binding of the DnaA-ATP protein complex to the fully methylated oriC sequence.

This takes place in association with the inner membrane. DnaA is in the active form only when bound to ATP.

DnaA has intrinsic ATPase activity that hydrolyzes ATP to ADP and thus inactivates itself when the initiation stage ends.

TLS Online TPP Program

#Id: 8984

#Unit 11. Evolution and Behavior

Genotype Frequencies

TLS Online TPP Program

#Id: 2957

#Unit 3. Fundamental Processes

The yeast ARS elements satisfy the classic definition of an origin as a cis-acting sequence that causes DNA replication to initiate.

TLS Online TPP Program

#Id: 8392

#Unit 2. Cellular Organization

The CaM*-Ca2+ complex binds and activates MLC kinase, phosphorylates the myosin LC.