In Sea urchin,

Sperm-activating peptides provide direction to sperm during chemotaxis.

TLS Online TPP Program

#Id: 9733

#Unit 6. System Physiology – Plant

For many aphids, EBF is the principal constituent of the aphid alarm pheromone, and the constitutive production of EBF by plants could hold promise in the control of specific aphid pests

TLS Online TPP Program

#Id: 9734

#Unit 6. System Physiology – Plant

To store, toxic secondary metabolites is to conjugate them with a sugar, which also makes them more water soluble

TLS Online TPP Program

#Id: 9735

#Unit 6. System Physiology – Plant

Members of the Brassicales produce glucosinolates—sulfur-containing organic compounds derived from glucose and an amino acid—as their major defensive secondary metabolites

TLS Online TPP Program

#Id: 9736

#Unit 6. System Physiology – Plant

The hydrolyzing enzyme, myrosinase (a thioglucosidase), is stored in different cells than its substrates. While myrosinase-containing cells are mostly glucosinolate-free, the so-called sulfur-rich cells (or S-cells) contain high concentrations of glucosinolates.

TLS Online TPP Program

#Id: 9737

#Unit 6. System Physiology – Plant

Sinigrin, a major glucosinolate of black mustard seeds and horseradish roots.

TLS Online TPP Program

#Id: 9738

#Unit 6. System Physiology – Plant

Members of the Poaceae family use benzoxazinoids an alkaloids derived from tryptophan as constitutively produced defensive secondary metabolites.