0
Crushing the food sample before performing a Biuret test increases the surface area, allowing for better exposure of proteins to the Biuret reagent. This enhances the reaction between the copper ions in the reagent and the peptide bonds in the proteins, leading to a more accurate color change that indicates the presence of proteins. Additionally, it helps to homogenize the sample, ensuring consistent results.
What else can I help you with?
What is the purpose of doing the biuret test with water?
Performing the biuret test with water serves as a negative control. It helps to ensure that any color change observed in the test sample is indeed due to the presence of proteins and not from other factors such as contamination or a reaction with water itself.
Why should the concentration of sample be low in spectrophotometer readings?
When doing reading on a spectrophotometer, the sample being studied is either a color change or a precipitated compound, depending on the wavelength that it is being read. If it is a precipitated compound and it has a very high concentration, then you run the risk of the light being used to measure the absorbance not going through. In which case you have total absorbance but it is inaccurate in helping you determine the concentration of your sample because you are unsure where the concentration limit is for that wavelength, and your sample could possibly be able to absorb more. In which case you still can't calculate the concentration of the sample.
What is the general procedures for making a serial dilution?
The clue is in the question - you dilute the sample serially - i.e. over and over until you get the required concentration.Typically you take 1 unit of the sample and make it up to 10 units with a suitable solvent (de-ionised water, saline, buffer, really depends on what you are doing) - this is a 1 in 10 solution - do it three more times and you get 1 in 10,000 solution.Extra CreditIf you keep going then eventually less than one molecule of the sample will remain in the solution and you're heading in to homeopathy territory.If you're working with biological samples then remember to practice aseptic technique otherwise you risk contaminating your more dilute samples.
Why dilute the blood when doing red blood cell count?
Diluting the blood before a red blood cell count helps ensure accurate results by providing a standardized sample volume for counting. This allows for a more precise calculation of the number of red blood cells present per unit volume of blood. Dilution also helps prevent clumping of cells, which can interfere with accurate counting.
How does a glucose test strip work?
I found this question while I was doing research on a project for a class on this exact topic. I had to create a website to present my research, so here is the link to my website. Hopefully, it will answer your question. http://www.wou.edu/~hpowells06/diabetes/glucose_meters.htm
What is the purpose of doing the biuret test with water?
Performing the biuret test with water serves as a negative control. It helps to ensure that any color change observed in the test sample is indeed due to the presence of proteins and not from other factors such as contamination or a reaction with water itself.
Why were you instructed to keep swirling the flask?
To mix the reactants. Assuming you have been doing a titration experiment and I am doing your homework its so as you add the acid/alkali you can accuratly close the biuret when the indicator changes colour.
Why is it important to have a representative sample when doing surveys?
Because without representative sample, your results will not be valid.
If your 10 and you have a crush what would you do?
Firstly, I am pleased you know it is just a crush. Most people have them and it is perfectly normal. As long as it is someone about your own age then maybe a first move would be to gently flirt with them. That way you can find out how they think before doing anything further.
Should you talk to the friend of the guy that you like?
Sure by doing so you can find out more about your crush and it could give you ideas about what to talk to your crush about.
Should I text my crush when he always responds and see how he's doing and how work is doing for him?
To text your crush and ask how his day is going allows him to know that you are thinking of him. That you care and like to know he is having a good day.
Why would having a larger sample size be a better idea than having a samll sample size when doing an experiment?
less bias and error occur when sample size is larger
Why is having a larger sample size be a better idea than having a small sample size when doing a experiment?
1. Better chance of uniform sample. 2. Material for confirmations if needed.
Will nuerontin dilute a urine sample?
Why do you wanna know? You shouldn't be doing drugs!
How did Harry develop a crush on Ginny?
When he was doing his sixth year in Hogwarts, one day Harry saw Ginny and Dean Thomas snogging. After seeing that he felt doing the same with Ginny. He tried to control himself, but couldn't. This is how he developed a crush for Ginny.
You're always doing these crazy things and whenever your crush is around and sees these things he keeps looking at you so does that mean something important or does he just think you're weird?
Maybe but that's because your crush doesn't know that your doing these crazing things because your crush is there. You should just Calm down and just talk about daily stuff. Like how you hate doing homework or your pet did an amazing thing. Just chat about normal things when the crush is around. Then you should take the oppertunity to chat a lot with the crush and get to know him/her. Good things will come out of it. Maybe they will become your friend....or even more
How is Daniel Radcliffe doing?
he is hot cute funny brave and i sooo have a crush on him he hee ! lol
