TLS Online TPP Program

#Question id: 1980


For one person to produce over a million different antibody molecules could not possibly require over a million different genes. Instead, this variability is accounted for by which processes?

#Section 2: General Biology
  1. alternative splicing of exons after transcription

  2. increased rate of mutation in the RNA molecules

  3. DNA rearrangements followed by alternative splicing of the transcripts

  4. DNA rearrangements in the thymus cells

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TLS Online TPP Program

#Question id: 105

#Section 2: General Biology

Isoprenoids are lipids which neither contain nor are derived from fatty acids and include

A) steroids.

B) waxes.

C) terpenes.

TLS Online TPP Program

#Question id: 10545

#Section 6: Plant, Animal and Microbial Biotechnology

Some given facts regarding effector molecules such as;

a) HC-toxin-induced plasma membrane hyperpolarization in guard cells causes massive K+ uptake and permanent stomatal opening

b) Xanthomonas, are proteins that target the plant cell nucleus and causes change in gene expression, called transcription activator-like (TAL) effectors bind to the host plant DNA and activate the expression of genes

c) Fusicoccin, a cyclic peptide, acts on the enzyme histone deacetylase in the nucleus, and may have a compromising effect on the expression of genes involved in defense

d) Gibberellins accelerate growth, resulting in bigger plants when compared with uninfested plants. The gibberellins produced by the fungi are identical to those produced endogenously by the plant

Which of the following combination is incorrect?

TLS Online TPP Program

#Question id: 648

#Section 2: General Biology

Enzyme catalysis is regulated by a number of mechanisms. Also, the flux through metabolic pathways must be regulated. Given the metabolic pathway below, which choice accurately describes the regulation of compound G levels?

TLS Online TPP Program

#Question id: 552

#Section 2: General Biology

Which of the following is true of the binding energy derived from enzyme-substrate interactions?

TLS Online TPP Program

#Question id: 17922

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following algorithms implements “once a gap, always a gap” policy?