TLS Online TPP Program

#Question id: 23694


How does a genomic library differ from a cDNA library?

#Unit 13. Methods in Biology
  1. A genomic library contains only noncoding sequences, whereas a cDNA library contains only coding sequences.
  2. A genomic library varies, dependent on the cell type used to make it, whereas the content of a cDNA library does not.
  3. A genomic library can be made using a restriction enzyme and DNA ligase only, whereas a cDNA library requires both as well as reverse transcriptase and DNA polymerase.
  4. The genomic library can be replicated but not transcribed.
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TLS Online TPP Program

#Question id: 5839

#Unit 8. Inheritance Biology

During recombination in E. coli, ________ recognize(s) regions of sequence similarity and promote(s) strand invasion, while ________ bind(s) to a Holliday junction promoting strand migration.

TLS Online TPP Program

#Question id: 28863

#Unit 2. Cellular Organization

Melanophores are cells of the vertebrate skin that contain hundreds of dark melanin-filled pigment granules called melanosomes. Melanophores either have their melanosomes dispersed or aggregated by__

TLS Online TPP Program

#Question id: 26508

#Unit 3. Fundamental Processes

Which of the following are true regarding the splicing of tRNA 
a.RnaseP cuts at 5’ end 
b.RnaseD cuts at 3’ end 
c.Base modification followed by CCA addition by specific polymerase
d.And then final script of 78 bp formed

TLS Online TPP Program

#Question id: 13033

#Unit 13. Methods in Biology

The sample is then fractionated by electrophoresis through a _______. As all the proteins now have an _______ to mass ratio, they are separated on the basis of their _____.

TLS Online TPP Program

#Question id: 14890

#Unit 4. Cell Communication and Cell Signaling

In bone marrow, stem cells are committed to different lineages. Factors that stimulate colonies of these different lineages are interleukin-3 granulocyte- macrophage colony stimulating factor (GM-CSF)
A) Granulocyte colony stimulating factor ( G-CSF )and 
B) Macrophage colony- stimulating factor (M-CSF) are formed;
i) Natural killer cells
ii) Monocytes
iii) Granulocytes
iv) Neutrophills
Find out the correct combination of these macrophages;