TLS Online TPP Program

#Question id: 18900


Which statement is correct regarding ratio of half-life of radioactive material to its mean life?

#Unit 13. Methods in Biology
  1. Will remain constant
  2. Will be always greater than one
  3. Will increase with increase in duration of half life
  4. Will depend on amount of radioactive material
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TLS Online TPP Program

#Question id: 11493

#Unit 2. Cellular Organization

Which of the following membrane protein form channel, in the form of gap junctions between cells?

TLS Online TPP Program

#Question id: 10660

#Unit 10. Ecological Principles

Given below are growth equations where dN/dt is defined as

A.  rN

B. rN[(K-N)/N]

With reference to the above equations, which one of the following statements is incorrect?

TLS Online TPP Program

#Question id: 24524

#Unit 11. Evolution and Behavior

Which of the following is defined as any consistent difference in fitness among phenotypically different classes of biological entities?

TLS Online TPP Program

#Question id: 12259

#Unit 10. Ecological Principles

Which of the following is an example of exploitation competition? 

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?