The E. coli trp operon contains the 5 genes Trp-EDCBA for the anabolic enzymes to make the tryptophan.

TLS Online TPP Program

#Id: 5177

#Unit 7. System Physiology – Animal

Plasma proteins have:  Specific functions

(antibodies & blood clotting proteins)

Nonspecific functions (carriers for various hormones, solutes, and drugs)

TLS Online TPP Program

#Id: 9416

#Unit 11. Evolution and Behavior

A trait can evolve by sexual selection if it increases a male’s overall fitness, even if it decreases survival.

Exaggerated secondary sexual traits are favored by sexual selection because they increase male mating success.

TLS Online TPP Program

#Id: 2973

#Unit 3. Fundamental Processes

in mammalian cells, Cdt1 is targeted for degradation by the action of a protein complex that is recruited to the origin of replication by PCNA, the eukaryotic counterpart of the bacterial beta-clamp.

TLS Online TPP Program

#Id: 692

#Unit 3. Fundamental Processes

Mutants that used to analyse Replication Machinery are usually Conditional Lethals

TLS Online TPP Program

#Id: 9994

#Unit 4. Cell Communication and Cell Signaling

The Wnt-Ca2+ pathway is initiated by Frizzled receptors activating a classical G protein-coupled signaling pathway.