Answer:
Proterozoic Eon
Explanation:
The Proterozoic Eon is the most appropriate eon to indicate the geological age of this rock unit. This is because this rock presents fossils of the first multicellular and soft-bodied marine organisms and it was in the Eon Proterozoic that the first single-celled living organisms appeared.
The Proterozoic eon, as already mentioned above, is characterized by being the period of the land where the first multicellular marine organisms appeared. This period is divided into three ages: Paleoproterozoic Era (where eukaryotic beings arose), Mesoproterozoic Era and Neoproterozoic Era (where the first multicellular marine organisms arose).
Glycolysis refers to the metabolic procedure of transforming one molecule of glucose into two molecules of pyruvate via an arrangement of ten enzymatic catalyzed reactions.
Glucose + 2ADP + 2NAD+ + 2Pi -> 2 pyruvate + 2ATP + 2NADH + 2H+ + 2H2O
In this, from three molecules of glucose six molecules of ATPs are generated.
On the other hand, the pentose phosphate pathway can take place to metabolize dietary pentose sugars obtained due to the digestion of nucleic acids as well as to reorganize the carbon skeletons of dietary carbohydrates into gluconeogenic/glycolytic intermediates (F6P and GAP).
The pentose phosphate pathway is a prime producer of NADPH for the production of fatty acids. This pathway is not created to generate ATP.