Question

Cellular Respiration > Laboratory Review Questions and Problems What other independent variables might be used when working with fermentation retina 2 Which substance is used as a control in the fermentation experiments? 3. Glucose, sucrose, and starch were used in the fermentation experiment. These are what types of car: bohydrates? Glucose Sucrose Starch 4. What influence might small increases in temperature have on respiration rates? Large increases in temperature? 5. Why was it necessary to provide insulation around the germinating seeds in Exercise B? 6. Energy is stored in several types of molecules: list as many different energy storage molecules as you can think of. 7. 224 kilocalones The heat production you have measured shows that respiration is not 100 percent efficient. When I mole of glucose (the molecular weight in grams) is oxidized in a respiring cell, approximately 434 kilocalories of useful energy are generated in the form of ATP. In contrast, the complete oxidation of glucose yields 687 kilocalories of energy measured as heat. Using these figures, calculate the efficiency of respiration as a percent. 119

Answer 1

1. The independent variable is the volume of the microbial suspension which doesn't affect the rate of the fermentation process.

2. The control of the physical and chemical processes of fermentation is usually straightforward. The most important sensors for reliable fermentation control are used for chemical process control like pH and DO2 Probe.feed back control is used to measure the metabolic rate. The online sensors in situ are used for simple physiochemical measurements.

3.Types of carbohydrates,

Glucose- Monosaccharides

sucrose - Disaccharides

starch - Polysaccharides.

4. With a small increase in temperature, the cell respiration also increases but this has a limit. When the Temperature increases beyond the limit the motion of the particles also increases with results in the collision of substrates and the enzymes. The too high temperature will lead to the denaturing of the enzyme responsible for cell respiration and The reaction will become slower and stops.

5. Excercise B is not available. Data not available.

6. In general, the energy-storing molecules are Glucose, Fat and ATP which is Adenosine triphosphate.

7.The figure is not available to solve the question.