TLS Online TPP Program

#Question id: 15416


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

#Part-B Specialized Branches in Biotechnology
  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.
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TLS Online TPP Program

#Question id: 10518

#Part-B Specialized Branches in Biotechnology

HC-toxin from the fungus Cochliobolus carbonum, which causes northern leaf blight disease, and inhibits

TLS Online TPP Program

#Question id: 14117

#Part-A Aptitude & General Biotechnology

Identify the character based method used for the construction of a phylogenetic tree. 
P. Maximum parsimony 
Q. Neighbor joining 
R. Maximum likelihood 
S. Bootstrapping

TLS Online TPP Program

#Question id: 3024

#Part-B Specialized Branches in Biotechnology

In a rapidly multiplying bacterial population, cell numbers increase

TLS Online TPP Program

#Question id: 10886

#Part-B Specialized Branches in Biotechnology

Much greater proportion of energy fixed by autotrophs is transferred to the herbivore level in the open ocean ecosystem than in a forest ecosystem because

TLS Online TPP Program

#Question id: 891

#Part-A Aptitude & General Biotechnology

The folding pathways of some proteins require two enzymes that catalyze isomerization reactions such as,

a) Peptide prolyl isomerase (PPI)  catalyzes the elimination of folding intermediates with inappropriate disulfide cross-links

b) Protein disulfide isomerase (PDI) enzyme that catalyzes the interchange, or shuffling, of disulfide bonds until the bonds of the native conformation are formed

c) Peptide prolyl cis-trans isomerase (PPI) catalyzes the interconversion of the cis and trans isomers of Proline residue peptide bonds

d) Peptide prolyl isomerase (PPI) can be a fast step in the folding of proteins that contain some Pro peptide bonds in the cis conformation

Which of the following combinations is correct about protein folding pathways?