During strenuous exercise you may notice that your muscles b

During strenuous exercise, you may notice that your muscles burn. Which of the following statements best explains this phenomenon? In general terms explain what is happening in your cells and where in the cell. Furthermore, what would result from the phenomenon (you’re about to explain) if you were a yeast cell? A) Proteins are being digested to provide energy.B) Carbon dioxide is building up in muscle and changing the pH. C) Without oxygen, pyruvate is being converted to lactic acid.D) ADP is accumulating, which produces a burning sensation. E) Pyruvic acid causes muscle pain.

Solution

1.C) Without oxygen, pyruvate is being converted to lactic acid.

2.In our body cells, energy needed activity it is derived from anaerobic metabolism with the cytosol of muscle cells, opposed to aerobic respiration which is helpes to utilizes oxygen, and occurs in the mitochondria. In this energy sources consist of yhe phosphocreatine (PCr) system, fast glycolysis, adenylate kinase. These energy sources are re- synthesize adenosine triphosphate (ATP), this ATP is the unversal energy source in all cells.In this rapid source is most readily reduced the sources in the PCr system which is utilized the enzyme creatine kinase. The reaction of the enzyme is, that combines phosphocreatine and adenosine diphosphate (ADP) in to ATP and creatine.This reaction is very short lasting because oxygen is important for the resynthesis of phosphocreatine through mitochondrial creatine kinase.So the anaerobic conditions, the substrate is limited and only lasts between 10 to 30 seconds of high strenuous exercise.The function of glycolysis is approximately 2 min prior to fatigue, and predominately uses intracellular glycogen. During this exercise, glycogen is broken down to glycogen phosphorylase into individual glucose units. Under anaerobic condition, glucose is oxidized to pyruvate is reduced to lactic acid. In this oxidized reaction is NADH to NAD, so releasing a hydrogen ion, promoting acidosis. The long periods of time fast glycolysis can not be sustained. So , the adenylate kinase catalyzes a reaction by the 2 ADP are combined to form of ATP and adenosine monophosphate (AMP).This reaction creating of AMP is stimulates AMP- activated protein kinase.This AMP- kinase is the energy sensor of the cell. In this strenuous exercise conditions, AMP kinase stimulates other intracellular enzymes geared towards increasing supplying energy and decreasing anabolic, and cell functions.

3.Ethanol and Corbondioxide - yeast perform anaerobic fermentation releasing these products. The pathway of fermentation reaction of glycolysis with extra reactions tacked on the end. The extra reactions makes alcohol, while in muscles of the body, it makes of lactic acids.