TLS Online TPP Program

#Question id: 12534


Which of the following statements is correct about biogeochemical cycling?

#Unit 10. Ecological Principles
  1. The phosphorus cycle involves the recycling of atmospheric phosphorus
  2. The phosphorus cycle is a cycle that involves the weathering of rocks
  3. The carbon cycle is a localized cycle that primarily involves the burning of fossil fuels
  4. The carbon cycle has maintained a constant atmospheric concentration of CO2 for the past million years
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TLS Online TPP Program

#Question id: 1537

#Unit 4. Cell Communication and Cell Signaling

Transformation of mature cells may also occur due to aberrant expression of stemness genes, resulting in cell clones with a dedifferentiated phenotype and self-renewing capacity resembling stem cells. Recent experimental evidence supporting this proposal has been provided with the induction of adult somatic cells into pluripotent stem (iPS) cells through ectopic expression of four genes encoding the pluripotency factors Oct4 and Sox2, the transcription factor Klf4, and the oncoprotein c-Myc in mouse or human fibroblasts. However, along with pluripotency comes the capability of generating teratomas. On the basis of the above information which of the following outcome is most appropriate?

TLS Online TPP Program

#Question id: 1538

#Unit 4. Cell Communication and Cell Signaling

Many aspects of the biology of stem cells, including maintenance of pluripotency, self-renewal, and differentiation, are controlled by the phenomenon of RNA interference involving a variety of small molecules of RNA.

Match the following miRNA (Column I) with their target gene (Column II).

Column I

Column II

a. Let-7 miRNA

i. Bcl-2

b. miR-16

ii. PTEN phosphatase

c. miR-125a and miR-125b

iii. Myc

d. miR-21

iv. LIN28

TLS Online TPP Program

#Question id: 1539

#Unit 4. Cell Communication and Cell Signaling

Regulatory T cell (TREG) have identified by the presence of

TLS Online TPP Program

#Question id: 1540

#Unit 4. Cell Communication and Cell Signaling

Peptidoglycans  recognize by

TLS Online TPP Program

#Question id: 1541

#Unit 4. Cell Communication and Cell Signaling

Nonphagocytic cell of immune system,

TLS Online TPP Program

#Question id: 1542

#Unit 4. Cell Communication and Cell Signaling

function of  calprotectin?