TLS Online TPP Program

#Id: 7613

#Unit 5. Developmental Biology

Acrosomal enzymes (acrosin and MMP2) as well as the enzymes that help establish capacitation, are inhibited by zinc, the accumulation of zinc on the zona pellucida and in the surrounding cumulus form a “zinc shield” that prevents further sperm entry

TLS Online TPP Program

#Id: 9279

#Unit 6. System Physiology – Plant

The binding of Nod factors to the Nod factor receptors (NFRs), which contain extracellular LysM motifs, initiates an interaction with the conserved SYMRK receptor-like kinases containing a leucine-rich repeat (LRR) domain.

TLS Online TPP Program

#Id: 4948

#Unit 6. System Physiology – Plant

Phytochrome B (PhyB) is probably the photoreceptor involved in shade detection and avoidance. This response allows many species to greatly increase their stem extension rate when they become shaded by competitors.

TLS Online TPP Program

#Id: 5526

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 967

#Unit 5. Developmental Biology

The major candidate that forms the Nieuwkoop center in these vegetal cells β-catenin