Answer:
It is important that he human trachea is reinforced with cartilaginous rings to keep the passage open as pressure keeps fluctuating during the process of breathing.
Explanation:
The trachea is reinforced with cartilaginous rings as it doesn't allow the trachea to collapse in our day to day lifestyle. It also keeps the air way passage open in spite of the continuous pressure changes during breathing.
The rings are not complete posteriorly to provide another advantage, that is it allows the esophagus to expand anteriorly ( inside the body) when we swallow food.
Answer:
Plant cells have chloroplasts because they make their own food. Plant cells have a cell wall so that they do not burst when the central vacu
ole fills up with water. ... Each organelle has it's own specific fun
ction to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
Explanation:
Answer:
The function of the proteins that are embedded in the cell membranes is to transport materials in and out of the cell. Proteins are large sized biomolecules that are also referred to as macromolecules at times. They are made up of large chains of amino acid molecules.
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