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.
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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.
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