Vitamin D and PTH appear to stimulate production of mature osteoclasts through the dual action:

a. Inhibiting OPG production

b. Stimulating RANKL formation

c. Stimulating OPG production

d. Inhibiting RANKL formation

TLS Online TPP Program

#Question id: 12238

#Unit 10. Ecological Principles

The mussel Mytilus edulis thrives in saline habitats, in both the highly salty seawater of tidal zones and the less salty estuaries. This results in two kinds of populations: one adapted to the higher salt concentrations of the tidal zone, and one adapted to the lower salt concentrations of the estuary. It has been found that the more salt-tolerant populations have high frequencies of an allele that produces an enzyme involved in maintaining osmotic equilibrium. Conversely, estuarine mussels having the same enzyme seem to be disfavoured and have a much higher death rate than mussels without the allele. Adult estuarine populations do have lower frequencies of this allele. Each spring, large numbers of larvae from  the salty habitats pour into the estuaries.

The invasion of the seawater larvae would be expected to facilitate change in the genetic structure of the estuarine population by a process called

TLS Online TPP Program

#Question id: 1109

#Unit 4. Cell Communication and Cell Signaling

What role do phosphatases play in signal transduction pathways?

TLS Online TPP Program

#Question id: 14958

#Unit 6. System Physiology – Plant

Where the matrix polysaccharides are synthesized by

TLS Online TPP Program

#Question id: 929

#Unit 1. Molecules and their Interaction Relevant to Biology

During B oxidation of fatty acids, ___________ is produced in peroxisomes but not in mitochondria.

TLS Online TPP Program

#Question id: 15987

#Unit 12. Applied Biology

Which of the following physical method involve in plant transformation?