From what mechanism does most self tolerance result from? Group of answer choices
The deliberate inactivation or destruction of BCR's and TCR's on lymphocytes that bind to self epitopes
The deliberate inactivation of phagocytes
MHC I recognition
MHC II recognition
Answer: The deliberate inactivation or destruction of BCR's and TCR's on lymphocytes that bind to self epitopes.
Explanation: Self tolerance is the ability of the immune system to recognize antigens as a non-threat, at the same time mounting a response to a foriegn body. Common mechanism most self tolerance result from is by the deliberate inactivation or destruction of BCR's and TCR's on lymphocytes that bind to self epitopes
From what mechanism does most self tolerance result from? Group of answer choices The deliberate inactivation...
In the absence of infection ____________________ (Select all that apply). Group of answer choices A. MHC class II molecules bind to self peptides prematurely in the lumen of the endoplasmic reticulum B. non-self peptides do not bind to MHC molecules C. MHC class I and class II molecules bind to and transport self peptides to the cell surface D. MHC class I and class II molecules are unable to progress through the vesicular system
Macrophages: Group of answer choices Process antigens Physically present biologically modified antigens to lymphocytes Secrete a lymphocyte-activating factor (IL-1) as a result of proper MHC recognition All the above
What is the mechanism that allows for more gene products than genes? Group of answer choices Addition of poly A tail Signal recognition particles Alternative RNA splicing Frameshift mutations
What is the function of the TATA binding protein (TBP)? Group of answer choices aids in the removal of introns from eukaryotic pre-mRNA allows prokaryotic RNA polymerase to bind to the promoter of genes allows eukaryotic RNA polymerase II to bind to the promoter of genes helps termination factors bind and terminate transcription. All of the answer options are correct.
20. Defective function of which of the following proteins will result in failed antigen presentation to CD8 T cells? a. HLA-DM b. TAP c. Cathepsins d. CD1d 21.True or False: An antibody proteolytically cleaved by pepsin yields a fragment with higher avidity to the cognate antigen than an antibody cleaved by papain. a. True b. False 22.The structure recognized by an antibody (that is, the epitope) is the ________ and the regions of the antibody with significant sequence variation are...
A natural monopoly is most likely to result if a single firm: Group of answer choices is the only seller in a community. is investor-owned, but is granted the exclusive right by the government to operate in a market. experiences economies of scale over a wide range of output. has gained control over a strategic input of an important production process.
By what mechanism would the following compounds react? Group of answer choices SN1 SN2 E1 E2 ?? ح جر ها
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What is a disadvantage of the functional structure? Group of answer choices It does not allow firms to be either innovative nor flexible. It cannot effectively address a higher level of diversification. It does not allow firms to successfully pursue a blue ocean strategy. It does not allow firms to successfully pursue a cost-leadership strategy.
43) The nonspecific immunity that protects a person from developing a microbial infection includes all 43) of the following excrr! person from A) acidic secretions B) lymphocytes. Q antimicrobial proteins. D) mucous membranes. E) the skin. 4) In the inflammator from happening? y response, the absence of which of the following would prevent all of the others 44) A) leakage of plasma to the affected area Q dilation of blood vessels D) release of histamine E) increased permeability of blood...