Biology, 25.07.2019 17:30 Aycla123

Cells lining the human respiratory tract have projections that keep the passageway clean, moving debris and mucus up and out. these cellular projections are a) cilia. b) flagella. c) microtubules. d) pseudopodia.

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The correct answer to the question: Cells lining the human respiratory tract have projections that help keep the passageway clean, moving debris and mucus up and out. These cellular projections are:__, would be, A: Cilia.

Explanation:

The human respiratory system is not just a set of tubes, and a pair of lungs, where the exchange of gases for life, takes place. Because air carries with it much more than just gases, like oxygen, but it also carries microorganisms, and damaging particles, the respiratory system has in place a series of physiological, and organic mechanisms, to protect us from these damaging elements in air. One such protection lines are the projections present in the cells that are present all along the linings of the respiratory tubes. These projections are like small hairs, that constantly move like a brush, to remove elements from the air that should not be present in the lungs. These brush-like projections are called cilia.

Answer from: Quest

the form of energy changes and the total energy increases0l

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answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat. although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.

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Cells lining the human respiratory tract have projections that keep the passageway clean, moving de...