Question

Colpidium colpoda is a unicellular eukaryote that lives in

freshwater, eats bacteria, and moves by cilia (see Figure
6.23b). Describe how the parts of this cell work together
in the functioning of C. colpoda, including as many
organelles and other cell structures as you can.

Answer 1

Colpidium colpoda is in contact with the environment due to its membrane containing receptor, once it detects the presence of a bacterium able to be phagocyted by the cell, it will go towards it by the cilia there will have membrane invagination due to the contraction of the cytoskeleton (actin-myosin) with the presence of ATP generated by mitochondria, and a stimulation of the secretion of enzymes to degrade the ingenous bacterium (RNA synthesis by the nucleus and translation by ribosomes).