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.

i don't know what the picture looks like but i can take a guess and say maybe basidiomycetes?

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands