The Effect Of Temperature And Germination Or Nongermination On Cellular Respiration

1159 words - 5 pages

Cellular respiration is the oxygen-requiring reactions, occurring in the mitochondrion, that breaks down the end products of glycolysis into carbon dioxide (CO2) and water (H2O), while capturing large amounts of energy as adenosine triphosphate (ATP).

Most cells can metabolize a variety of organic molecules to produce ATP. Virtually, all cells metabolize glucose for energy, at least part of the time. Secondly, glucose metabolism is less complex than the metabolism of most other organic molecules.

The formula for complete glucose metabolism is the opposite of photosynthesis. The products of one, is the reactants of another. The formula for glucose metabolism is as follows:

C6H12O6 + 6O2 6CO2 + 6H2O

There are a few basic steps in glucose metabolism. The first stage, glycolysis, does not require oxygen and proceeds in exactly the same way under both aerobic (with oxygen) and anaerobic (without oxygen) conditions.

Glycolysis splits apart a six glucose molecule (six carbon sugar) into three-carbon molecules of pyruvate. The presence of oxygen becomes an issue only in the processes that follow glycolysis. During glycolysis, two ATP molecules are produced. Also, under anaerobic conditions, the pyruvate is usually converted by fermentation into lactate or ethanol.

Cellular respiration is a series of reactions, occurring under aerobic conditions, in which large amounts of ATP are produces. During cellular respiration, the pyruvate produced by glycolysis is broken down to CO2 and H2O. The final reactions of cellular respiration require oxygen because oxygen acts as the final acceptor of electrons.

The two molecules of pyruvate produced by glycolysis are transported across both mitochondrial membranes and into the matrix. Once inside the matrix, pyruvate reacts with a molecule called coenzyme A. Each pyruvate is then split into CO2 and a two carbon molecule called an acetyl group, which immediately attaches to coenzyme A, forming acetyl CoA.

Next, the stages of the reaction form a cyclic pathway known as the Krebs Cycle. Each turn creates one ATP. Since it's happening twice, then there are two as a result of Krebs.

Now, combined with the two ATP from glycolysis, there are four ATP molecules. With thirty-two ATP left to make, the energetic electrons produced by the Krebs Cycle are carried to the electron transport system in the inner mitochondrial membrane.

By now, lying in wait, many energy carriers are ready to go to work. The cell has captured many energetic electrons in carrier molecules: two NADH during glycolysis plus eight more NADH and FADH2 from the matrix reactions, for a total of ten NADH and two FADH2.

The carriers deposit their electrons in the electron transport system located in the inner mitochondrial membrane. Here, their energy is used to generate a hydrogen ion gradient across the inner membrane. The movement of hydrogen ions down through ATPase, their gradient,...

Find Another Essay On The Effect of Temperature and Germination or Nongermination on Cellular Respiration

The Effect Of Temperature On Beetroot Membranes

736 words - 3 pages The effect of temperature on the beetroot membranes Aim of the research: The aim of this investigation is to determine what kind of effect will the increasing temperature have on the plasma membrane of a beetroot cell. Introduction The beetroot contains a red pigment that is kept in the cells by the membranes. If the membranes are damaged, the pigment “betalain” will leek out. The amount of pigment that leeks out can be assessed, as

My Lab on Cellular Respiration Essay

558 words - 2 pages ” weather then cellular respiration will obviously occur at a more expansive extent than in the dormant peas. Methods 1. A room temperature bath and an ice bath were prepared. The ice bath was set to be approximately 12°C while the room temp bath was set to be 21° C. 2. The volume of a handful of germinating peas was attained. The graduated tube was refilled with 25 mL of water. Dried peas were placed in the graduated cylinder and then glass

The Effect of Different Sugar Sources on Yeast Respiration

726 words - 3 pages The purpose of this investigation is to test the effect of different sugar sources on yeast respiration. Yeasts are unicellular organisms belonging to the fungi kingdom and Eukarya Domain. Yeast are heterotrophs which gain its energy from enzymes that break down carbohydrates into alcohol and CO2. It can also derive energy from simple sugars such as fructose and glucose, which can be found mostly in groups and reproduce asexually (occasionally

The Effect of Glucose Concentration on Anaerobic Respiration in Yeast

859 words - 3 pages concentration of the glucose, so I will be able to see whether the concentration of glucose will have an effect on the respiration of yeast or not. I also will also make sure that while conducting an experiment, I will keep the flasks absolutely clean all the time. This will help to avoid the chance of bacteria building up, and so the competition over the glucose will be avoided.The mass added and the intervals of adding must be controlled

The Effect of Sugar Substitutes on Yeast Respiration

1531 words - 6 pages Introduction The purpose of this investigation is to test the effects of multiple sugar substances on the respiration of yeast. Most people think of yeast when they think of what makes bread rise, cheese, alcoholic beverages, or other food products. Another type of yeast can also cause yeast infections, an infection of the skin. Yeasts (Saccharomyces) are tiny, microscopic organisms with a thin membrane and are usually oval or circular-shaped

The Effect of Temperature on the Rate of Reaction

1175 words - 5 pages The effect of temperature on rates of reaction Aim: The aim of this experiment is to find out if the reaction rate of sodium thiosulphate solution and hydrochloric acid will be affected by a temperature change. Prediction: I predict that as a result of increasing the temperature of the sodium thiosulphate, the rate of reaction will be faster. Because of the increase in temperature, the particles will gain more kinetic energy. This will

The Effect of Temperature on the Permeability of Beetroot Membrane

1307 words - 5 pages three minutes) - Everyone should vary the place in the beetroot they extract the cylinders from to be cut - The classes cylinders should all be cut by the teacher (or any other person) to ensure there is minimal variation between the thickness of the discs. Conclusion The experiment was successful as it clearly showed the effect of temperature on the beetroot membrane. It showed that the membrane becomes

Investigating the Effect of Temperature on the Permeability of Membranes

1928 words - 8 pages Investigating the Effect of Temperature on the Permeability of MembranesThe permeability of membranes can be altered in several ways. From previous preliminary work I know that reagents, for example detergents and alcohol alter the arrangement of the phospholipids in the membrane allowing substances to leak out of the cell. Temperature also affects the membrane. As membranes relay on protein molecules to allow molecules to enter and leave the

THE EFFECT OF TEMPERATURE ON THE RATE OF ENZYME ACTIVITY

651 words - 3 pages testing the temperature on the rate of enzyme activity is to examine how different temperature might increase or decrease activity. Adding energy in the form of heat to the enzyme will most likely increase activity because more reactions are able to take place. However, cooling down the enzyme and thus removing energy will most likely slow down the process because there is less energy available for the enzymes to utilize for reactions. However

Biology: Experiment- The Effect of Temperature on the Enzyme Rennin

1890 words - 8 pages Aim: The aim of the experiment is to test the effect temperature has on the activity of the enzyme rennin.Hypothesis: I believe the rate of reaction will speed up as the temperature increases until it reaches about 37oC, which is the body temperature, where it will begin to slow down and stop reacting. I believe this will occur because enzymes have a temperature range at which they work best in and once the temperature goes out of this range the

The Effect Temperature and Concentration Have on a Reaction

2909 words - 12 pages The Effect Temperature and Concentration Have on a Reaction We must produce a piece of coursework investigating the rates of reaction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. It is measured by dividing 1 by the time taken for the

Similar Essays

The Effect Of Temperature On Anaerobic Respiration Of Yeast

1642 words - 7 pages The Effect of Temperature on Anaerobic Respiration of Yeast We wanted to find the effect of temperature on anaerobic respiration of yeast. We investigated how a mixture of yeast, water, sugar, and flour were affected. Diagram ======= Apparatus ========= 1g of yeast 0.5g of sugar 10g of flour 6 measuring cylinders - to put the sachets in and the 20cm3 of water Measuring

The Stages Of Cellular Respiration And Photosynthesis

768 words - 3 pages The Cellular respiration and photosynthesis form a critical cycle of energy and matter that supports the continued existence of life on earth. Describe the stages of cellular respiration and photosynthesis and their interaction and interdependence including raw materials, products, and amount of ATP or glucose produced during each phase. How is each linked to specific organelles within the eukaryotic cell? What has been the importance and

Photosynthesis And Cellular Respiration Essay

791 words - 3 pages of RuBP. The third part is the regeneration of CO2 acceptor(RuBP). In a series of reactions, the five molecules of G3P are rearranged in the last steps of the Calvin cycle into three molecules of RuBP. To do this, the cycle uses three molecules of ATP and now the RuBP is once again ready to receive CO2 again so that the cycle can continue.part two, Cellular RespirationCellular respiration is sort of the opposite of photosynthesis. There are

The Effect Of Temperature On Beetroot Membranes

1448 words - 6 pages Usman Omid Biology IB 1A The Effect of Temperature on Beetroot MembranesAimThis practical will test the effect of temperature on the integrity of the membranes,IntroductionThe cells of beetroot contain a pigment called betalain in their vacuoles. It is kept inside the cells by the membranes. If these membranes are damaged, then the betalain leaks out. The amount that leaks out can be assessed, as the leaked out pigment will color the water
Mehr anzeigen | Akıllı Aksesuarları | Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb