I- Homogamous head

This type of inflorescence exhibits single kind of florets. 

disc florets alone or ray florets alone

II- Heterogamous head; 

The inflorescence possesses both types of florets.

Example;   Helianthus

TLS Online TPP Program

#Id: 9697

#XL - T Zoology

In resting cells, 

GSK3 is catalytically active which phosphorylates and inhibits glycogen synthase, thus blocking glycogen synthesis from glucose

TLS Online TPP Program

#Id: 9698

#XL - T Zoology

In presence of insulin, 

GSK3 becomes phosphorylated by PKB its catalytic activity is inhibited

TLS Online TPP Program

#Id: 9699

#XL - T Zoology

Insulin stimulated activation of PKB promotes rapid activation of glycogen synthase and glycogen synthesis

TLS Online TPP Program

#Id: 9700

#XL - T Zoology

Mating pathway in the yeast S. cerevisiae, is a MAP kinase cascade which linked to GPCRs.

TLS Online TPP Program

#Id: 9701

#XL - T Zoology

Two mating types of yeast cells are: 

1. a 

2. α

TLS Online TPP Program

#Id: 9702

#XL - T Zoology

Haploid yeast cells secrete protein signals known as pheromones, which induce mating between opposite mating types.