When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become rounded. the internal structures disrupted by this chemical are probably available hint(s)when elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become rounded. the internal structures disrupted by this chemical are probably endoplasmic junctionsmicrotubules

Microtubules

Explanation:

These filament-like structures are a major component of the cytoskeleton of the cell and help is maintain asymmetrical cell shape. They are composed of tubulin molecules arranged to form a 'hollow straw' attached to the cell membrane end to end . The contraction and lengthening of these microtubules are controlled by the addition of removal these of tubulin molecules to vary its length.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.