Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 55529
TLS Online TPP Program

#Question id: 15416

Which of the following statements are regarding to lens induction in xenopus is incorrect?

#Unit 5. Developmental Biology
  1. Lens induction can be achieved in the presence of optic vesicle after priming of head ectoderm by the anterior neural plate.
  2. The optic vesicle can induce the presumptive head ectoderm to form the lens.
  3. Under the influence of factors secreted by the lens, the optic vesicle becomes retina.
  4. The anterior neural plate primes the head ectoderm via BMP4 and Fgf8 prior to signals from the optic vesicle.
More Questions
TLS Online TPP Program

#Question id: 12570

#Unit 10. Ecological Principles

Extinction is a natural phenomenon. It is estimated that 99% of all species that ever lived are now extinct. Why then do we say that we are now in a biodiversity crisis?
TLS Online TPP Program

#Question id: 19100

#Unit 6. System Physiology – Plant

Xanthomonas oryzae secretes a highly conserved peptide, which mediates quorum sensing by
TLS Online TPP Program

#Question id: 348

#Unit 1. Molecules and their Interaction Relevant to Biology

Sulfur is in the same column of the periodic table as oxygen, but has electronegativity similar to carbon. Compared to water molecules, molecules of H2S will ________.
TLS Online TPP Program

#Question id: 18599

#Unit 13. Methods in Biology

Three guys A, B, and C gets involved in a cycle race. All the guys are competent at the same level. If they race once a day for a week, what is the probability of A winning the race thrice?
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?