How ph affects the break down of starch by the enzyme amylase hypothesis: the optimum ph for the reaction of starch with amylase is ph 7 ph values lower or higher than this value will result in a slower rate of reaction. Start studying chemical aspects of digestion lab learn vocabulary, terms, and more with flashcards, games, and other study tools search which has a low ph, meaning pepsin works in an acidic environment test tube that goes through all the steps of the experiment and does contain all the substance being tested therefore, positive. The pepsin is most effective in ph levels of 15-25 though can still work up to about ph 6 and is ineffective when gastric acids have been neutralised the temperature at which it is efficient ranges between 30 oc end 40 oc but can work at temperature between 15 oc and 48 oc.
Pepsin experiment essay by essayswap contributor, high school, 12th grade, february 2008 download word file, 5 pages, 30 downloaded 11 times keywords carbon dioxide, ph, experiment, chemical reaction, concentrates 0 like 0 tweet aim: to see how effectively the enzyme (pepsin) will work in different concentrates of acid also to. Ph 0 2 4 6 8 10 12 pepsin salivary amylase (ptylalin) trypsin fig 112 effect of ph on catalytic activity in three digestive enzymes from different segments of the experiments to fill out your datasheet, and will need to understand why all three experiments had the results they did. The optimal ph for pepsin is around 2 0 because it showed a higher optimal density showing that more bpna has been hydrolyzed also the stomach is very acidic adding to the reasoning that pepsin will work well in acidic environments. Enzyme activity can be affected by the change of ph, temperature and the concentration of substrate or enzyme in the solution the focal aim of this experiment is to see what ph our protease works at best to determine where it is made in the body.
Effect of ph on protein digestion essay sample categories free essays tags we will write a custom essay sample on effect of ph on protein digestion test tubing # 1 # 3 # 5 were all controlled trial tubing in the experiment 2 pepsin works best at a ph of 2 4 an alkalic metal in the tummy would finally decelerate down the. Free essays 2665 words experiment at 37ºc with 5ml of pepsin i did the experiment with no drops of acid and then from 1-4 drops of acid i found that 4 drops of adding drops of acid changes the ph of the pepsin mixture, it makes it more acidic as different enzymes work best at different phs, it is. (a) the ph condition in test tube p (ph 3) is optimum for the function of pepsin (b) this is because the contents of test tube p become clear at the end of the experiment all the test tubes are immersed in a water bath maintained at 37 c for 20 minutes.
In my experiment lower ph water made plants grow much faster than high ph, at the end the one with a water ph of 6 grew to 6 inches and the plant watered at a ph of 8 only grew to 475 in this is because flowering plants grow at a much higher rate when they absorb certain nutrients, and these nutrients are easiest to absorb when the ph is lower. Investigating enzymes - effects of ph on enzyme activity experiment user description: had to plan and experiment, to later perform in class, showing the effects of ph on enzyme activity. The effects of pepsin vs trypsin in the digestion of protein introduction as food is mechanically and chemically digested through our oral cavity then passes through our pharynx and down our esophagus, our food then enters the stomach.
The pepsin concentration was at a constant so there is another test which could be explored, whether different concentrations of the enzyme would have an effect although it would be expected that an increase in enzyme concentration would result in an increase in the rate of reaction we will write a custom essay sample on pepsin ph. The experiment was carried out at a number of ph levels to show that pepsin (and all other enzymes) have an optimal ph range in which they perform most effectively, in order to model the effect the changing ph has on the activity of the enzyme. These are the sources and citations used to research the effect of temperature on pepsin this bibliography was generated on cite this for me on sunday, march 13, under what ph and temperature does the enzyme pepsin work under 2016 in-text: (auanswersyahoocom, effect of temperature on the digestive enzyme pepsin biology essay. Essay lab report kimmi dodia- biomedical science- 1019971 lab partner- kim harcourt lab report- experiment 1: microbial genetics abstract the objective of this experiment was to introduce the study of bacterial genetics in order to identify the potency of different mutagenic agents.
In experiment three, stability of intrinsic phytase of these feed ingredients was determined after incubation in different concentrations of pepsin (0, 5 and 10 mg/ml) at ph 20 intrinsic phytases of wheat and rye were resistant to pepsin, but barley phytase was susceptible to pepsin and its stability decreased to 057 after pre-incubation for. Essay # 1 definition of enzymes: enzymes are soluble, colloidal organic catalysts formed by living cells, specific in action, protein in nature, inactive at 0°c and destroyed by moist heat at 100°c. Investigation on the effect of ph on enzymes essay sample investigation on the effect of ph on enzymes essay sample design experiment this means that enzymes found in a stomach are adapted to work best at very low ph and therefore cannot work in a ph that is higher, example: pepsin, produced in the pyloric glands in the stomach walls.