Answer:
Neutrophils help fight infections because they ingest microorganisms and secrete enzymes that destroy them. A neutrophil is a type of white blood cell, a type of granulocyte and a type of phagocyte.
Explanation:
Neutrophils display adhesion glycoproteins on their surface to bind endothelial and subendothelial structures. They move randomly until they find a damaged site. Unless neutrophils are activated, endothelial cells do not tend to adhere. When inflammation mediators (IL-1, FNT) activate endothelial cells, they express P-selectin and E-selectin on the surface. The expression of glycoproteins and L-selectin cause the initial adhesion of the non-stimulated neutrophil to the activated endothelium, slowing it down by rolling it over the endothelium. Activated endothelial cells, opsonized particles, immune complexes, FEC-G, FEC-GM and chemoattractants produce factors that stimulate neutrophil activation. Expressing β2 integrin (endothelium adhesion molecule) Neutrophils expand and form pseudopods. Neutrophil activation also promotes degranulation, superoxide generation, and arachidonate metabolite production.
I think it’s a forelimb of a whale
Collagen Fibers produce tough protein fibers that give bones flexibility and prevent shattering.
The plant
cells vacuole is larger compared to the animals cells' because the plants
vacuoles takes up 90% of the cells volumes. Vacuole stores food for the
organism. In this case since, plants manufacture their own food, it is
necessary for it to have a large storage space or a large vacuole.
Neither homologous chromosomes nor sister chromatids have separated by metaphase I of meiosis. Therefore the chromosome number is 12, and the number of DNA molecules is 24. This cell will contain 12 chromosomes and 24 DNA molecules.