What is the second stage of metabolism?

What is the second stage of metabolism?

Acetyl-CoA, a two-carbon molecule common to glucose, lipid, and protein metabolism enters the second stage of energy metabolism, the citric acid cycle. The breakdown of fatty acids begins with the catabolic pathway, known as β-oxidation, which takes place in the mitochondria.

What are the metabolic steps?

The three stages of nutrient breakdown are the following:

• Stage 1: Glycolysis for glucose, β-oxidation for fatty acids, or amino acid catabolism.
• Stage 2: Citric Acid Cycle (or Kreb cycle)
• Stage 3: Electron Transport Chain and ATP synthesis.

What is the second step of cellular respiration?

The second stage of cellular respiration, called the Krebs cycle , takes place in the matrix of a mitochondrion.

What are the 3 metabolic processes?

Let’s get science-y with the Three Metabolic Pathways. There are three metabolic pathways that provide our muscles with energy: the phosphagen pathway, the glycolytic pathway, and the oxidative pathway.

Where does the second stage of catabolic metabolism occur?

Stage 2 = “Glycolysis” – anaerobic respiration in cytoplasm of cells.

What are the 2 metabolic pathways a cell can use?

Consequently, metabolism is composed of these two opposite pathways: Anabolism (building molecules) Catabolism (breaking down molecules)

What are the 4 metabolic pathways of glucose?

Schematic representation of the cellular fate of glucose showing the major metabolic pathways: glucose transport and phosphorylation, glycolysis, glycogen synthesis, pentose phosphate pathway, and hexosamine biosynthesis pathway.

What happens in stage 2 of catabolism?

In stage II of catabolism, the metabolic pathway known as glycolysis. converts glucose into two molecules of pyruvate (a three-carbon compound with three carbon atoms) with the corresponding production of adenosine triphosphate (ATP).

What are the four stages of carbohydrate metabolism?

Carbohydrate metabolism involves glycolysis, the Krebs cycle, and the electron transport chain.

Where does order and sequencing take place in the pathway of metabolism?

Pathways of Metabolism. Order and sequencing is also brought about by reactions taking place on or in a membrane, within membrane bound organelles and within small membrane bound sacs called vesicles. Specific pathways and ‘biological containers’ all help to keep opposing reactions separate from one another.

How is secondary metabolism related to primary metabolism?

Secondary metabolism utilizes precursors obtained from primary metabolism to synthesize a complex array of products with diverse function, including antibiotics. Susan A. Joyce, David J. Clarke, in Advances in Applied Microbiology, 2011

How are substrates transformed in a metabolic cycle?

All substrates are chemically transformed in reactions that belong to either pathways (if the reactions are aligned in linear fashion) or metabolic cycles (if the moieties of the reactions are preserved). The term substrate oxidation is used for substrate degradation ultimately leading to CO2 production.

What is the difference between morphogenesis and secondary metabolism?

Morphogenesis is differential biochemistry expressed in a three-dimensional array, while secondary metabolism is differential biochemistry with or without these cellular rearrangements. Secondary metabolism is simply one facet of the many possible developmental processes exhibited by differentiating cells.