Cytokines trigger endothelial cells to express specific receptors called selectins, which bind to carbohydrates on the surface of neutrophils.
Cytokines are the proteinaceous structures predominant in cell signaling. They also regulate the growth of immune cells and blood cells. They can also occur in the form of glycoproteins. The example of cytokines are interleukins, interferons, chemokines and Tumor Necrosis Factor (TNF).
Selectins are the transmembrane proteins that span the lipid bilayer only once. They belong to the family Cell Adhesion Molecules. They perform role in processes like inflammation, lymphocyte homing, immunological responses, etc. They are localized on the membranes of endothelial cells, leukocytes and platelets.
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<span>A phosphate group is just a phosphorus atom bound to four oxygen atoms, but it has many important roles. Along with sugars and bases, it makes up nucleic acids, like DNA and RNA. As part of energy carriers, like ATP, it provides energy for moving our muscles.</span>
The answer is '<span>triploid cell'.
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This occurs when two sperm nuclei reach the interior of a female gametophyte, where one sperm will fertilise the egg cell to form a zygote, whereas the other usually fuses with the binucleate central cell, forming a primary endosperm cell, effectively constituting an organism separate from the growing embryo. Approximately 70% of angiosperm species have polyploid endosperm cells which are typically triploid (containing three sets of chromosomes), but can vary widely from diploid(2n) to 15n.
Answer:
I would rather be a multicellular organism.
Explanation:
I say so because if I were to be a single cell organism, how would my life be? Would I still be able to think and move as I do as a multicellular organism? The answer would be no, I wouldnt. Single celled organisms like bacteria have a nucleus, unlike multicellular organisms. I would like to stay the way I am. (Just my opinion)