Pathogen-associated molecular patterns (or PAMPs) are common foreign structures that characterize whole groups of pathogens. It is these unique antigenic structures that the immune system frequently recognizes first. Animals, both invertebrates and vertebrates, have evolved to express several types of cell surface and soluble proteins that quickly recognize many of these PAMPs; a form of pathogen profiling. For example, encapsulated bacteria possess a polysaccharide coat with a unique chemical structure that is not found on other bacterial or human cells. White blood cells naturally express a variety of receptors, collectively referred to as pattern recognition receptors (PRRs), that specifically recognize these sugar residues, sugar residues is recognised by?

TLS Online TPP Program

#Question id: 12260

#Unit 10. Ecological Principles

Chemical competition among organisms is referred to as __________. 

TLS Online TPP Program

#Question id: 12261

#Unit 10. Ecological Principles

When a person removed the predator Pisaster from rocky intertidal areas, the diversity of prey animals changed from 15 to __________. 

TLS Online TPP Program

#Question id: 12262

#Unit 10. Ecological Principles

The myxoma virus was introduced to Australia to control an outbreak of which of the following pests? 

TLS Online TPP Program

#Question id: 12263

#Unit 10. Ecological Principles

You have discovered an unknown insect that has cryptic coloration. What do you hypothesize about this animal? 

TLS Online TPP Program

#Question id: 12264

#Unit 10. Ecological Principles

You discover several species of unpalatable insects that closely resemble each other. You propose that this is an example of __________ mimicry. 

TLS Online TPP Program

#Question id: 12265

#Unit 10. Ecological Principles

A metapopulation consists of