The new value of the dependent variable is caused by and depends on the value of the independent variable for example, if you open a faucet (the independent variable), the quantity of water flowing (dependent variable) changes in response--you observe that the water flow increases. The variable in an experiment that has the potential to change in response to the experimental conditions altered by the researcher. We use this information to present the correct curriculum and to personalise content to better meet the needs of our users. Biuret reagents bottles 6 1 disposable transfer pipettes (droppers) 6 1 1 the independent variable in this experiment is concentration sm: the dependent variable in this experiment is absorbance 3 turn on the spectrophotometer 1 turn on the spectrophotometer, allow it to initialize.
Our independent variables will be benidict's reagent and biuret reagent our dependent variable will be starch and hcl the negative control of the experiment will be the mixture of starch, h20, and benedicts reagent. Chapter 01: biology and the scientific method 9 108: does one variable make a good experiment yes, keep the number of variables to one if possible here is an example imagine the car will not start and you have to develop an experiment to find. Lab 1 exercise 1 orientation equipment triple beam balance erlenmeyer flask independent variable dependent variable control group termite experiment pheromone independent, dependent, controlled variables colorimetric test = biuret presence of protein = violet color results of experiments.
Best answer: it seems like this question must be related to a lab experiment you are required to do, but there is not enough information provided to answer this question one thing that will help you is to research what macromolecule each of these reagents tests for once you know that, you could use that as a positive control. Bio 101 lab practical 1 revised spring2012 1 lab 1 exercise 1 orientation equipment colorimetric test = biuret presence of protein = violet color results of experiments standards (starch, albumin, glucose, oil) control group dependent variable independent variable controlled variables lab 4 exercise 6 enzymes properties of enzymes. Review guide for biol 150 lab exam 1 montgomery college rockville campus negative biuret assay answer q20 this substance gives a positive benedict's assay, a positive barfoed's assay, a negative iodine assay, and a what is the dependent variable _____ b) what is the independent variable. Describe the color of a positive reaction and a negative reaction for iodine, benedict, and biuret tests describe how an emulsifier changes the mixing of oil and water identify the independent, dependent, and control variables in your 6.
The independent and dependent variables in this experiment would be creatine and muscle mass the best way to test these variable would be the biuret test this will help test to see if any proteins are evident. Bio lab questions uncategorized no comments part 51 to explain the molecular composition of the unknown solution based on the results obtained during testing with the biuret solution and each sample solution what is the dependent variable. Biuret is a reagent that will change color from blue to violet when it detects peptide bonds between amino acids of a protein violet is a positive test, while blue is a negative test. Results of adding biuret reagent to potatoes record the results of the test return to potatoes.
Best answer: your independent variable is the part you are manipulating you are not changing the chemicals,they are just what you use to telk you what tyoe of food it is what you are changing is the type of food so the food is your independent variable your dependent variable is what you are mieasuring. Precipitate this will be the dependent variable and is a result of the manipulation of the independent variable method: 1- label all test tubes by covering with masking tape at the top and writing the test tube number accordingly 2- place 10 millilitres of the 10% solution in test tube number 1. Best answer: the independant variables are the variables that you control and the dependant variable are the variable that take place because of the independant variables the control group is a neutral group so you have a norm to base your experiement on for example if you're testing a pill that.
Purified bsa can be used with biuret solution in serial dilutions to generate a standard curve the standard curve will illustrate the relationship between concentration (the dependent variable ) and absorbance at 540 nm (the independent variable . Know independent vs dependent variable independent variabe: factors that the scientist varies during the experiment dependent variable: a feature that the scientist measures in response to the independent variables. Dependent variable the event studied and expected to change when the independent variable is changed if a scientist conducts an experiment to test the theory that a vitamin could extend a person's life-expectancy, then the independent variable is the amount of vitamin that is given to the subjects within the experiment.
Variable is the variable that changes as a result of the independent variable in this experiment, the dependent variable is the color/observations made with the positive and negative results. Biology201 lab lab 2 carbs, lipids, and proteins lab 3 & 4 cell types and histology the x-axis should be the independent variable and teh y axis should be the dependent variable this will be your standard curve biuret reagent was added to act as a dye so the spectrophotometer could measure absorbance values. Prepare a graph of the standards (the standard curve) with the dependent variable (mg/ml) on the x axis and the independent variable (abs 595 nm) on the y axis • calculate the protein concentration of your knowns using cv=cv. Biology 102_103 lab 1 introduction to science complete answer biology 102_103 lab 1 introduction to science complete answer biology 102/103 what would be the independent and dependent variables 5 what would be your control 6 what type of graph would be appropriate for this data set biuret solution experiment 3: what household.