Answer:
The brain is a vital part of the human body because it is the centre which controls and coordinates all psychological functions of body systems.
The arrangement of atoms in a mineral can change its physical and chemical properties.
Diamonds and coal are both made of carbon, however, their chemical and physical properties are very different.
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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Darker colors absorb and retain warmth than warm tones. As a result, plants in the tundra have dark-colored leaves, hairy and clumped and stems to help them absorb solar heat faster and stay warm for longer periods of time. So it could be tundra ecosystem according to the given scenario.
<h3 /><h3>What is tundra ecosystem?</h3>
Tundra ecosystems are treeless areas found in the Arctic and on mountain peaks where the climate is cold and windy and rainfall is scarce.
Much of the year, tundra lands are covered in snow, but summer brings bursts of wildflowers.
Darker colors absorb and retain warmth than warm tones. As a result, plants in the tundra have dark-colored leaves, hairy and clumped and stems to help them absorb solar heat faster and stay warm for longer periods of time.
Thus, the correct ecosystem for the given condition is tundra.
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Stars with higher mass have shorter lifespans. When the sun becomes a red giant, its atmosphere will engulf the Earth. During the red giant phase, a main sequence star's core collapses and burns helium into carbon. After about 100 million years, the helium runs out, and the star turns into a red supergiant.
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