When sulfated polysaccharide binds to its receptor on the sperm, activates 3 sperm membrane proteins: 

(1) A calcium transport channel

(2) A sodium-hydrogen exchanger

(3) A phospholipase enzyme (IP3)

TLS Online TPP Program

#Id: 8662

#Unit 10. Ecological Principles

Coexist of species 

They Do Not Occupy Identical Niches

Species may partition resources

Morphological differences

Realized niche is less than fundamental niche 

Greater strength intraspecific competition than interspecific competition 

TLS Online TPP Program

#Id: 5892

#Unit 3. Fundamental Processes

DNA polymerases fall into five families based on sequence homologies; the palm is well conserved among them, but the thumb and fingers provide analogous secondary structure elements from different sequences.

TLS Online TPP Program

#Id: 1851

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 1643

#Unit 4. Cell Communication and Cell Signaling

Class II, presentation is inhibited by treatment of the cells with an agent that blocks endocytic processing within the cell (chloroquine).

TLS Online TPP Program

#Id: 7546

#Unit 6. System Physiology – Plant