Chemical regulation of stem cells takes the form of secreted proteins from surrounding cells that influence stem cell states and progenitor differentiation through endocrine, paracrine, or juxtacrine mechanisms. These signaling factors:

TLS Online TPP Program

#Question id: 11005

#7. System Physiology – Animal

Which of the following phases of the cardiac cycle follows immediately after the beginning of the QRS wave?

TLS Online TPP Program

#Question id: 306

#1. Molecules and their Interaction Relevant to Biology

The force responsible for dissolution of ionic compound in water is_________

TLS Online TPP Program

#Question id: 19458

#13. Methods in Biology

How phase contrast and DIC microscopy are used to image live cells and unstained tissues?

TLS Online TPP Program

#Question id: 23606

#Aptitude

A’s son B is married with C whose sister D is married to E the brother of B. How D is related to A?

TLS Online TPP Program

#Question id: 5751

#8. Inheritance Biology

A biochemical mutant that must be supplied with a particular nutrient for growth would be described as a(n)