The nucleus directs all activities that happen within the cell and contains the cell genetic material (DNA).<span> The nucleus gives the signal to the cell to grow, divide and/or make proteins. </span>
<span>Vascular plants are able to grow higher than other plants due to the rigidity of xylem cells, which support the plant.</span>
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<em>The name for a complex group of organisms is system Hope this helps!</em>
Technically there is no direct connection between air pressure and humidity. Humidity is the amount of water vapor in the air or air parcel. Air pressure is its weight of the air in a column, the true connection is in the temperature.
The electron transport chain is the final stage of aerobic respiration leading to the forming of ATP in the inner membrane of the mitochondrion<span>.
</span>Mitochondrion<span>, is a membrane-bound organelle found in the cytoplasm of almost all eukaryotic cells.
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<span>An eukaryote is any organism whose cells contain a nucleus and any other organelles within the membranes.</span>