Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 55799
TLS Online TPP Program

#Question id: 10470

when the environmental stimuli associated with high CO2 demand inside the leaf are transduced into

#Unit 6. System Physiology – Plant
  1. lower turgor pressure leads to guard cell swelling and a widening of the stomatal pore   
  2. decrease in turgor pressure, and stomatal closure
  3. higher turgor pressure leads to guard cell swelling and a widening of the stomatal pore      

  4. Higher turgor pressure resulting guards cell swells and leads to decreasing stomatal aperture

More Questions
TLS Online TPP Program

#Question id: 16954

#Unit 4. Cell Communication and Cell Signaling

match the following

 

 

A. endosteal niche

1. versatile cells that both generate bone and control the differentiation of HSCs

B. osteoblasts

2. line the blood vessels and also regulate HSC differentiation

C. reticular cells

3. send processes connecting cells to bone and blood vessels, and, unexpectedly

D. sympathetic neurons

4. can control the release of hematopoietic cells from the bone marrow.

TLS Online TPP Program

#Question id: 16953

#Unit 4. Cell Communication and Cell Signaling

The ability of any stem cell to self-renew and differentiate depends on the structural organization and cellular function of specialized anatomic microenvironments known as stem cell niches. These sequestered regions are typically populated by a supportive network of stromal cells. Stem cell niche stromal cells express soluble and membrane-bound proteins that regulate cell survival, proliferation, differentiation, and trafficking. Which statements is true about HSCs?
TLS Online TPP Program

#Question id: 16148

#Unit 4. Cell Communication and Cell Signaling

 Which statement is not true for NKT Cells?
TLS Online TPP Program

#Question id: 16147

#Unit 4. Cell Communication and Cell Signaling

 Which statement is not true for Natural killer (NK) cells?
TLS Online TPP Program

#Question id: 16146

#Unit 4. Cell Communication and Cell Signaling

If a given lymphocyte divides to form two daughter cells, both daughters bear antigen receptors with antigen specificities identical to each other and to the parental cell from which they arose, and so will any descendants they produce. The resulting population of lymphocytes, all arising from the same founding lymphocyte, is a clone. Which interleukin is responsible for clone production?
TLS Online TPP Program

#Question id: 16145

#Unit 4. Cell Communication and Cell Signaling

 Which line is not true for follicular dendritic cells?