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TLS Online TPP Program

#Question id: 2008

An immune response to a tissue graft will differ from an immune response to a bacterium because

#Unit 4. Cell Communication and Cell Signaling

  1. MHC molecules of the donor may stimulate rejection of the graft tissue.

  2. the tissue graft, unlike the bacterium, is isolated from the circulation and will not enter into an immune response.

  3. a response to the graft will involve T cells and a response to the bacterium will not.

  4. a bacterium cannot escape the immune system by replicating inside normal body cells.

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TLS Online TPP Program

#Question id: 23107

#Unit 2. Cellular Organization

Choose the correct statement
a.The 30-nm fiber is further folded, results in 10000-fold compaction in euchromatin in interphase chromatin and in mitotic chromosomes to achieve an overall 10,00- fold compaction in euchromatin.
b.This 30-nm fiber is further folded, results in 1000-fold compaction in euchromatin in interphase chromatin and in mitotic chromosomes to achieve an overall 10,000- fold compaction in euchromatin.
c.Heterochromatin generally maintains 10,000-fold compaction in both interphase and mitosis after 30 nm.
d.Heterochromatin generally maintains 10,00-fold compaction in interphase and 10,000 folds in  mitosis after 30 nm.
TLS Online TPP Program

#Question id: 23108

#Unit 2. Cellular Organization

Heterochromatin generally maintains compaction in both interphase and mitosis after 30 nm.
TLS Online TPP Program

#Question id: 23109

#Unit 2. Cellular Organization

What is the similarities between RNA polymerase and scaffolds 
TLS Online TPP Program

#Question id: 23110

#Unit 2. Cellular Organization

Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease (MNase), which cuts the DNA between nucleosomes, a region known as 
TLS Online TPP Program

#Question id: 23111

#Unit 2. Cellular Organization

Choose the correct option 
a. Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease (MNase), which cuts the DNA between nucleosomes, a region known as H2A-H2B dimer region. 
b. Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease (MNase), which cuts the DNA between nucleosomes, a region known as linker DNA.
c. Mononucleosomes typically have 200 bp DNA. End-trimming reduces the length of DNA first to 165 bp and then generates core particles with 146 bp.
d. Mononucleosomes typically have 200 bp DNA. End-trimming reduces the length of DNA first to 165 bp and then generates core particles with 200 bp.
TLS Online TPP Program

#Question id: 23112

#Unit 2. Cellular Organization

Chromatin on treatment with Mnase generates fragments, as the time and concentration of Mnase increase various fragments are observed choose the incorrect statement