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TLS Online TPP Program

#Question id: 7101

What is the mechanism by which cells fated to be mesoderm form in the marginal zone of the Xenopus embryo?

#Unit 5. Developmental Biology
  1. Cells in the marginal zone are fated to be mesoderm, but they do not become specified or determined as mesoderm until after they move internally during gastrulation.
  2. Cells of the vegetal region are induced by their proximity to the animal region cells to become mesoderm.
  3. Maternal factors packaged into the marginal zone act on these cells to instruct them to become mesoderm.
  4. Secreted signals of the TGF- family are released by the cells of the vegetal region and act on the adjacent cells of the marginal zone to instruct them to adopt a mesodermal fate.
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TLS Online TPP Program

#Question id: 19032

#Unit 9. Diversity of Life Forms

Which of the following is not common to all phyla of vascular plants? 
TLS Online TPP Program

#Question id: 10551

#Unit 6. System Physiology – Plant

plants possess a second type of immunity mediated by a set of highly specific intracellular receptors known as nucleotide binding site–leucine rich repeat (NBS–LRR) receptors. How NBS–LRRs become activated,
TLS Online TPP Program

#Question id: 27673

#Unit 1. Molecules and their Interaction Relevant to Biology

Some statements regarding the Domain is given    
(a) Domains are formed by combinations of SS, SSS, motifs and connected by loops and turns
(b) They are highly conversed and may be common in most unrelated proteins
(c) They do not evolve
(d) Can not function Independently
Choose the incorrect of the following
TLS Online TPP Program

#Question id: 12132

#Unit 10. Ecological Principles

Use the following diagram of a hypothetical food web to answer the following questions. The arrows represent the transfer of food energy between the various trophic levels.

Which letter represents an organism that could be a primary consumer?
TLS Online TPP Program

#Question id: 15231

#Unit 13. Methods in Biology

Which of the following is true for Capillary electrophoresis (CE) resolution