Which of the following observations would seem to contradict the cell theory? protein chains display lifelike mobility in moving through a cell
a daughter cell has the same chromosomes as a parent cell
cells do not grow past a certain size
a unicellular organism is discovered that has a nucleus and a flagellum

protein chains display lifelike mobility in moving through a cell

Explanation:

The cell theory as proposed by Mathias Scleiden, Theodor Schwann, and Rudolph Virchow in 1838 is a universally accepted theory that has three components which include; a) cell is the basic and fundamental unit of life b) All living organisms are composed of one or more cell c) Cells arise from pre-existing cells.

According to this question, the observation that "protein chains display lifelike mobility in moving through a cell" seem to contradict the cell theory because the CELL is regarded as the fundamental and basic unit of life, hence, it shouldn't contain any other living or moving molecule within itself.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: