A cell can only respond to signals from other cells, not from the physical environment. receptor activation. The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on: the presence of the appropriate receptors on the cells of the target tissue or organ.
Answer:
Wavelength and frequency are inversely proportional to each other. Such that longer waves have lower frequencies, and shorter waves have higher frequencies. The amplitude or height of a wave is measured from the peak to the trough.
Answer:
Option (A)
Explanation:
The Inuits refers to those people that live in the Arctic region, such as Greenland, the northern region of Canada, as well as Alaska. The region in which they live can be considered as tundra, which is characterized by the presence of low temperature, dry wind, shorter duration of seasons, and lack of vegetation. This type of region is found in the polar and near-polar areas and in the high altitude areas.
The climate of tundra is very cold, and there occurs the layer of permafrost in the soil, and it does not provide the essential conditions for the growth of plants. The growth of crops is hindered by the shorter season, lack of sunlight and low precipitation.
This is why the Inuits are dependent on hunting for heir survival
Thus, the correct answer is option (A).
Macrophages are immune cells which are responsible for performing the functions like clearance of pus, cellular debris, dead neutrophils as well as damaged tissue after the inflammation has been performed.
Macrophages are a type of immune cells. They are large phagocytic cells which can be found either mobile as a white blood cell or they can also be found in a stationary form in the tissues. They can especially be found at the site of infection.
During inflammation, they enter about 72 hours post the initial response to perform the function of cleaning up the debris, pus and also the dead neutrophils.
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