Question

From a nutritional standpoint, prokaryotes use reserve materials to store potential requirements for

A. major bioelements.

B. energy.

C. electrons.

D. Two of the above.

E. All of the above.

Answer 1

Prokaryotes reserve the materials in the form mostly of cytoplasmic granules such as  

1. Metachromatic granules : It composes mainly of polyphosphates, RNA and proteins which then used to build macromolecules such as DNA and proteins in the harsh environment where the nutritional elements are low or absent

2. Poly-β-Hydroxybutyrate : These are lipid granules and serve as the important source of food during the time of strarvation

3. Polyglucan granules : Polysaccharide granules, like the above it is also used during food starvation

4. Sulfur globules : contains elemental sulfur and the organisms harnessing this uses hydrogen sulfide as electron acceptor

Therefore, the correct option is all of the above, as the above reserve materials in storage granules serve as bioelements, energy and electrons in harsh environments