TLS Online TPP Program

#Question id: 137


Disulfide bridges can form in proteins ________.

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. only between cysteine residues side-by-side in the protein sequence

  2. between cysteine residues that are close in three-dimensional space, but not necessarily close in the primary structure

  3. between two cystine residues in proteins

  4. between any two methionines or cysteines

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TLS Online TPP Program

#Question id: 3796

#Unit 3. Fundamental Processes

Incorrect pairing of bases during bacterial DNA replication occurs about once every 10^5 to 10^6 nucleotides, but the spontaneous mutation rate is only one error in 10^9 base pairs. What accounts for the difference?

TLS Online TPP Program

#Question id: 1449

#Unit 4. Cell Communication and Cell Signaling

Src is a:

TLS Online TPP Program

#Question id: 15964

#Unit 12. Applied Biology

what are the reason behind embryo culture for the mature embryo?
a) Low survival of the embryo invitro
b) when embryo remains dormant for the long periods
c) To avoid inhibition in the seed for germination
d) High survival of the embryo invivo
e) For converting sterile seeds to viable seedlings

TLS Online TPP Program

#Question id: 11623

#Unit 8. Inheritance Biology

Insulin like growth factor in mice, where IgF+ represents tall, IgF- represent dwarf phenotype, if cross between male tall (IgF+/IgF+) with female dwarf (IgF-/IgF-) resulting progeny will shows tall phenotype , while reciprocate this cross resulting progeny  shows dwarf phenotype. If resulting these F1 progeny cross each other then what will be the ratio in F2  generation?

TLS Online TPP Program

#Question id: 18079

#Unit 9. Diversity of Life Forms

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs? 
1. Sporophyte embryo 2. female gametophyte 
3. egg cell                 4. megaspore