Movement of water across membranes is facilitated by proteins called:

#Question id: 1737

#I Life Science/ Life Sciences Group – I-V

The carrier T-cell epitope on a thymus-dependent antigen:

#Question id: 6990

#SCPH28 | Zoology

Insects such as Drosophila undergo three molts before becoming a pupa and undergoing metamorphosis. Molting, which is also called 'ecdysis', is controlled by what hormone?

#Question id: 5064

#I Life Science/ Life Sciences Group – I-V

Fibroblast growth factors, epidermal growth factors, platelet-derived growth factors, and stem cell factor are all paracrine factors that bind to

#Question id: 18374

#SCPH06 I Botany

#Question id: 11382

#SCPH06 I Botany

Ecologist has proposed following explanation to lead biodiversity at tropic.

a) Higher productivity in the tropics allows for more species

b)  Environments are more stable and predictable in the tropics, with fairly constant temperatures and rainfall levels year-round

c) Predators and pathogens limit competition in the tropics, which allows more species to coexist

d) High evolutionary speed at tropic than temperate