Explanation:
distribution and functional relationships
Organ rejection takes place when your body is subjected to a new organ which is a foreign object and attacks it.
<h3>What do you mean by Graft rejection?</h3>
Graft rejection may be defined as a process in which a transplant recipient's immune system attacks the transplanted organ or tissue.
Xenograft shows high rejection. This is because it involves the transplantation between genetically distinct members of different species.
The process of organ rejection is initiated by T cells which perform the role of the recognization of a transplanted organ.
If these T cells are activated, it may lead to organ rejection by undergoing clonal expansion, and differentiation of the effector cells, which together lead to the obliteration of the tissues.
Therefore, organ rejection takes place when your body is subjected to a new organ which is a foreign object, and attacks it.
To learn more about Organ rejection, refer to the link:
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The answer is (B). I hope that is right sorry if it’s not.
Answer:
Option A, Release of chemical signals by keratinocytes that have been damaged by UV light will increase the production of melanin.
Explanation:
Negtaive feedback mechanism of homeostasis maintains the stability of any internal condition or function through lessening of output of a system or through slow down of a functional system.
Here in this case the keratinocytes function is reduced by damaging them on exposure to UV light which further triggers the release of chemicals that enhance the production of melanin.
Hence, option A is correct
Answer:
Monosaccharides may be defined as the carbohydrates that cannot be hydrolyzed into the simpler units. Disaccharides are the carbohydrate that can be hydrolyzed into two sugars.
The dehydration means the removal of water molecule and used in the synthesis of the disaccharides. Hydrolysis means the breakdown of disaccharides into simple monosaccharides sugar. The water molecule is used up in this reaction. The triglyceride formation involves the dehydration synthesis the glycerol and fatty acids are linked together. Three molecules of water are released in this reaction. The hydrolysis reaction occurs in the formation of triglycerides.
