What do Th1 cells secrete?

TLS Online TPP Program

#Question id: 28235

#Unit 5. Developmental Biology

 Principles of stem cell regulation including extracellular mechanism which define the physical and chemical regulation, which of the following statements best describe the main differences between these two mechanism?

a) physical mechanism takes the form of secreted proteins from surrounding cells that influence stem cell & progenitor differentiation through endocrine

b) Chemical mechanisms including Structural & adhesion factors within the extracellular matrix 

c) physical mechanisms including Structural & adhesion factors within the extracellular matrix 

d) chemical regulation of stem cells takes the form of secreted proteins from surrounding cells that influence stem cell & progenitor differentiation through endocrine

TLS Online TPP Program

#Question id: 2764

#Unit 2. Cellular Organization

Which of the following organisms has the greatest amount of DNA per cell?

TLS Online TPP Program

#Question id: 4284

#Unit 3. Fundamental Processes

Assays for following the trafficking of proteins through the secretory pathway in living cells require

a. sensitive methods to distinguish the very small differences in organelle density caused by passage of a wave of protein transport through the organelle.

b. a way to identify compartments where labeled proteins are located.

c. the use of cell types that are highly dedicated secretory cells.

d. the use of enucleate cells in order to eliminate the nucleus as a site of labeling.

e. a way to label a cohort of secretory proteins

TLS Online TPP Program

#Question id: 27023

#Unit 10. Ecological Principles

when one species uses a second species for housing, is an characteristics of

TLS Online TPP Program

#Question id: 4566

#Unit 11. Evolution and Behavior

Which of these naturalists synthesized a concept of natural selection independently of Darwin?