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This all goes back to ecology. Some fit into each level of pH. They have found a space (niche) to grow and thrive in.
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How do microorganisms change the pH of their own environment?
they produce metabolic acids
Explain the effects of pH on enzyme reaction rates?
A change in pH can denature an enzyme, meaning the reaction would stop.
Does the optimum pH of salivary amylase differ from plant amylase?
Yes. Some plants are found to have amylase as well, such as those plants with high levels of starch, and they are the same types of amylase.
Why is it difficult or possible identify microorganism in mixed culture?
It can be difficult to identify microorganisms in a mixed culture because of the complexity of the environment and the presence of multiple organisms. Many microorganisms are difficult to identify and differentiate from one another especially in a complex microbial community. In addition the same species of microorganism may exist in different varieties which can further complicate the process of identification. Furthermore environmental factors such as temperature pH nutrient availability and the presence of other organisms can affect the growth and composition of the microbial community making it difficult to accurately identify individual species.In order to identify microorganisms in a mixed culture several techniques can be used: Growth on specific media Morphological characterization Biochemical tests Molecular characterization Genetic fingerprintingThese techniques can be used to accurately identify microorganisms in a mixed culture although the process can be time consuming and expensive. As such it is important to consider the costs and benefits of identifying microorganisms in a mixed culture before attempting to do so.
Explain what happens to catechol oxidase when the pH is on either side of the optimum?
When the pH is not at its optimum, then the differing pHs will disrupt the bonding between the R groups of the amino acid. This will change its shape, altering the shape of the activation site. Within an acceptable pH range, the enzyme will continue to function but since the shape of the activation site has been slightly altered, the reactions won't be able to proceed as quickly as they could at the optimum pH. The further away from the optimum pH, the more the shape of the activation site will change. Eventually, the substrate won't fit into the activation site and the reaction will stop.
Do microorganisms differ in pH requirement for growth?
No, all microorganisms will not grow optimally at a neutral pH. Several types of fungi, for example, grow better in an acidic environment.
Why do microorganisms differ in their pH requirements for growth?
Microorganisms also prefer a certain pH level in the substance or environment in which they grow--that is, they prefer to have particular acidic qualities in their surroundings. Most microorganisms, including most human pathogens, are neutriphils, organisms that prefer a neutral pH level. Some like high pH levels, but most often, if conditions are too acidic, then the organism's enzymes break down.
How do microorganisms change the pH of their own environment?
they produce metabolic acids
What Four factors which affect the growth of microorganisms?
Four factors which affect the growth of microorganisms are: temperature food source for microorganisms (ie. sugar, protein, fat) the amount of microorganisms introduced to the food source ph of the food source
How does the pH values of an acid and base differ?
Acids have a pH under 7 and bases a pH over 7.
What is the pH of saurkraut?
the decrease of the pH in sauerkraut is due to the succession of lactic and acetic acid microorganisms that grow on the brine solution making it acidic.
Does the pH of compost ingredients affect the populations of microorganisms during composting?
yes, it should be 5.5
Why the pH of a river sample differ after standing 1 week?
pullution change the pH of water
List the various requirements needed for culturing bacteria?
The requirements in culturing bacteria is the right temperature, gas, pH and moisture to assure proper growth of bacteria.
Why do people associate microorganisms with diseases?
You may be able to stop disease by drinking ph balanced water. There is a water filter machine that can ph balance the water and it runs about 4,000.
What is the benefit of having hydrochloric acid in your stomach?
Hydrochloric acid reduces the pH of the stomach fluids to 1.5-2. At such a low pH, most microorganisms are unable to survive. So, when we ingest microorganisms with our food, they are killed by the acidic conditions in our stomach. That is why, people don't fall sick all the time.
What is the pH of dish soap?
The pH of dish soap would be a base, but depending on the type of soap one is using, the actual pH number would differ.
