Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 31659
TLS Online TPP Program

#Question id: 13210

In Cohesion–Tension Theory, the pressure gradients needed to move water through the xylem could result from

#Unit 6. System Physiology – Plant
  1. the generation of positive pressures at the base of the plant or negative pressures at the top of the plant
  2. the generation of positive pressure both at the base of the plant and at the top of the plant
  3. the generation of negative pressure both at the base of the plant and at the top of the plant 
  4. the generation of negative pressure at the base of the plant or positive pressure at the top of the plant   
More Questions
TLS Online TPP Program

#Question id: 15775

#Unit 5. Developmental Biology

When a multipotent stem cell divides asymmetrically, its maturing daughter cell often goes through a transition stage, called as
A. Progenitor cell .
B. Transit-amplifying cell.
C. Adult stem cell
D. Totipotent precursor cell
TLS Online TPP Program

#Question id: 15776

#Unit 5. Developmental Biology

Which stem cells play critical roles in fueling organogenesis in the embryo and regeneration in adult tissues?
A. Adult stem cells.
B. Embryonic stem cells
C. True stem cells
D. Tissue specific stem cells
TLS Online TPP Program

#Question id: 15777

#Unit 5. Developmental Biology

Which of the following is not a property of the progenitor cell?
TLS Online TPP Program

#Question id: 15778

#Unit 5. Developmental Biology

Stem cell regulation is highly influenced by the microenvironment that surrounds a stem cell and is known as the
TLS Online TPP Program

#Question id: 15779

#Unit 5. Developmental Biology

During stem cell regulation extracellular mechanisms leading to intracellular changes that regulate stem cell behaviour. Which of the following is not consider as extracellular mechanisms for stem cell regulation?
TLS Online TPP Program

#Question id: 15781

#Unit 5. Developmental Biology

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: