Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 25293
TLS Online TPP Program

#Question id: 23101

Choose the incorrect statement 

#Unit 2. Cellular Organization
  1. The nucleosome is 200 bp of DNA, organized by an octamer of small, basic histone proteins into a beadlike structure. 
  2. The nucleosome is of 20nm/200A diameter, compacting the DNA about 13-fold over the length of naked DNA. Its first level of organization
  3. The second level of organization is the coiling of the 10-nm fiber of nucleosomes into a helical array to constitute the fiber of diameter 30 nm.
  4. 30 nm compacts the DNA 40-fold. This structure of this fiber requires the histone tails and is stabilized by linker histones
More Questions
TLS Online TPP Program

#Question id: 1746

#Unit 4. Cell Communication and Cell Signaling

Which is the first of the following genes to be upregulated subsequent to T-cell activation?
TLS Online TPP Program

#Question id: 1747

#Unit 4. Cell Communication and Cell Signaling

Cytokines always act:
TLS Online TPP Program

#Question id: 1748

#Unit 4. Cell Communication and Cell Signaling

Which of the folllowing is a cytokine receptor that is a member of the hematopoietin receptor family?
TLS Online TPP Program

#Question id: 1749

#Unit 4. Cell Communication and Cell Signaling

The αβ heterodimeric form of the IL-2 receptor:
TLS Online TPP Program

#Question id: 1750

#Unit 4. Cell Communication and Cell Signaling

IFNγ and TNF (TNFα) can act synergistically:
TLS Online TPP Program

#Question id: 1751

#Unit 4. Cell Communication and Cell Signaling

Which of the following is characteristically produced by the Th2 CD4 cells which provide help for antibody production, but not by Th1 cells?