Answer:
D. A cube
Explanation:
Epithelium cells are a type of cell that has a simple cuboidal epithelium that consists of only a single layer of cells that are cube-like or cuboidal in shape. These cells have large, spherical nuclei present in the center. These cells are cube-shaped cells
Answer:
The oxygen atoms of CO2 originated from glucose and the oxygen atom of H2O is originated from normal oxygen molecule that act as reactant during the break down of glucose by oxidation.
Explanation:
C6H12O6+6O2=6CO2+6H2O+Energy
In the above reaction glucose is being reduced to generate CO2 .As a result the oxygen of CO2 is originated from glucose.
The above also deals with the reduction of oxygen to H2O.From that point of view it can be stated that the oxygen atom of H2O originates from molecular oxygen that act as reactant.
<span>Government sanctioned activities to improve ecosystems have had little effect, is a false statement.</span>
Catalysts lower the activation energy for reactions<span>. The lower the activation energy for a </span>reaction<span>, the faster the rate. Then </span>enzymes speed up reactions<span> by lowering activation energy. Many </span>enzymes<span> change shape when substrates bind.</span>
