TLS Online TPP Program

#Question id: 1891


Rhesus hemolytic disease of the fetus and newborn involves:

#Unit 4. Cell Communication and Cell Signaling
  1. IgE

  2. Antibody to cell surfaces

  3. Soluble immune complexes

  4. Cytokine release from T-cells

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TLS Online TPP Program

#Question id: 18623

#Unit 13. Methods in Biology

Which of the following PCR has been devised to increase the specificity of PCR without lowering the efficiency

TLS Online TPP Program

#Question id: 14711

#Unit 5. Developmental Biology

Choose right explanations of gastrulation movements,  


TLS Online TPP Program

#Question id: 10885

#Unit 10. Ecological Principles

In a field experiment, autotrophs are provided a 14C-labelled carbon compound for photosynthesis. Radioactivity (14C) levels were then monitored at regular intervals in all the trophic levels. In which ecosystem is the radioactivity likely to be detected in longer time at the higher trophic level?

TLS Online TPP Program

#Question id: 2635

#Unit 2. Cellular Organization

In E. coli, deleting the ribosome binding site and region 1 of the trp attenuator and leaving the remainder of the attenuator intact has which of the following effects?

TLS Online TPP Program

#Question id: 4119

#Unit 3. Fundamental Processes

Many eukaryotic genes contain a large number of exons. Correct splicing of such genes requires that neighboring exons be ligated to one another; if they are not, exons will be left out. One early proposal suggested that the splicing machinery bound to a splice site at one end of an intron and scanned through the intron to find the splice site at the other end. Such a scanning mechanism would guarantee that an exon was never skipped. This hypothesis was tested with one minigene with a duplicated 5ʹ splice site. Find diagram of the products you expect from minigene if the splicing machinery binds to a 5ʹ splice site and scans toward a 3ʹ splice site.