Phagocytosis of microbes by macrophages is enhanced by both the binding of antibodies to the surface of microbes & antibody-mediated opsonization of microbes
What is the function of phagocytosis?
Phagocytosis is the cellular process through which particles bigger than 0.5 m in diameter, such as bacteria, foreign substances, and apoptotic cells, are ingested and eliminated.
- Phagocytosis is found in many different types of cells and is hence an important step for tissue homeostasis.
- However, only specialized cells known as professional phagocytes are capable of high-efficiency phagocytosis.
- Among these specialized cells are macrophages, neutrophils, monocytes, dendritic cells, and osteoclasts.
Phagocytosis occurs in four stages:
I identification of the particle to be swallowed,
ii) activation of the internalization process,
iii) development of a specialized vacuole known as a phagosome,
iv) maturation of the phagosome to turn it into a phagolysosome.
Hence, the correct option is A
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Carbon dioxide is used to produce sugar and oxygen
Ultimate control of testes development is by the hypothalamus which secretes Gonadotropin-Releasing hormone.
Hypothalamus is the one that send signals to your pituitary gland to produce Gonadotropin, which will determine how much testosterone your body produce. which will directly impact testes Development.
Answer:
Positive feedback mechanism:
This mechanism has positive correlation between the products and the process. The positive feedback mechanism result in the growth of a product. This mechanism is less common in organism and perform under specific conditions. Example: Process of blood clotting involves positive feedback mechanism.
Negative feed back mechanism:
This mechanism has negative correlation between the products and the process. Negative feedback mechanism result in the inhibition of the product. This mechanism is more common in organism and maintains homeostasis in the body.Example: Regulation of blood pressure involves negative feedback mechanism.
