Before replication, the palindromic target site is methylated on the adenines of each strand.

TLS Online TPP Program

#Id: 8405

#Unit 2. Cellular Organization

Muscle contraction depends on two processes that consume enormous amounts of ATP: 

1. Filament sliding, driven by the ATPase of the myosin

2. Ca2+ pumping, driven by the Ca2+ ATPase

TLS Online TPP Program

#Id: 4541

#Unit 12. Applied Biology

The first recombinant subunit vaccine approved for use in humans (against hepatitis B) was made in yeast.

TLS Online TPP Program

#Id: 3857

#Unit 5. Developmental Biology

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: 3833

#Unit 5. Developmental Biology

Fruiting structure consists of a tapered column of stalk cells that carries a spherical mass of spores aloft.

TLS Online TPP Program

#Id: 6915

#Unit 8. Inheritance Biology

Chromosome duplications are one way in which new genes evolve.