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TLS Online TPP Program

#Question id: 16148

 Which statement is not true for NKT Cells?

#Unit 4. Cell Communication and Cell Signaling
  1. NKT cells, have received a great deal of recent attention and share features with both conventional T lymphocytes and NK cells.
  2. Like T cells, NKT cells have T-cell receptors (TCRs), and some express CD4. Unlike most T cells, however, the TCRs of NKT cells are not very diverse and recognize specific lipids and glycolipids presented by a molecule related to MHC proteins known as CD1.
  3. Like their innate immune relatives, NK cells, NKT cells have antibody receptors, as well as other receptors classically associated with NK cells. Activated NKT cells can release cytotoxic granules that kill target cells.
  4. they can not also release large quantities of cytokines that can both enhance and suppress the immune response. They appear to be involved in human asthma, but also may inhibit the development of autoimmunity and cancer
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TLS Online TPP Program

#Question id: 735

#Unit 1. Molecules and their Interaction Relevant to Biology

The a-keratin chains indicated by the diagram below have undergone one chemical step. To alter the shape of the a-keratin chains—as in hair waving—what subsequent steps are required?
TLS Online TPP Program

#Question id: 19477

#Unit 12. Applied Biology

Cry V and Cry VI groups were added; these proteins are primarily 
TLS Online TPP Program

#Question id: 5809

#Unit 8. Inheritance Biology

Based on the physiological adaptation theory, bacterial populations that had not been exposed to T1 infection:
TLS Online TPP Program

#Question id: 12481

#Unit 2. Cellular Organization

Following statements are regarding to Kinetochore-microtubule interaction in S. cerevisiae.
A. In the simple kinetochore of S. cerevisiae, a protein complex called CBF3 associates with specialized, centromere-specific form of histone H3, called CENP-A.
B. The Ndc80 complexes initially make lateral interactions with a spindle microtubule and subsequently interact with a Dam1 complex, which forms a ring around the end of the microtubule. This interaction results in an end-on attachment of the centromere to the
spindle microtubule.
C. Microtubules that “capture” kinetochores are selectively stabilized by a reduction in the rate of catastrophes, which increases the chance that the attachment will persist.
D. With the two kinetochores attached to opposite poles, the duplicated chromosome is now under tension, being pulled in both directions by the one sets of kinetochore microtubules.
Which of the following combinations is correct?
TLS Online TPP Program

#Question id: 11952

#Unit 7. System Physiology – Animal

Lysine is an essential amino acid for animals. If an animal did not consume lysine in its diet, you might expect that the animal