When the sample size is greater than 30
Kruskal-Wallis H test.
In ANOVA, what does F=1 mean? What are the differences between a two sample t-test and ANOVA hypothesis testing? When would you use ANOVA at your place of employment, in your education, or in politics?
You can use the z test for two proportions. The link below will do this test for you.
You use the t-test when the population standard deviation is not known and estimated by the sample standard deviation. (1) To test hypothesis about the population mean (2) To test whether the means of two independent samples are different. (3) To test whether the means of two dependent samples are different. (4) To construct a confidence interval for the population mean.
You would test the leaves of the plant for starch. Starch is produced through photosynthesis in the leaves, so they are the best part of the plant to test for the presence of this carbohydrate.
If you mean to test for starch then Iodine
You can use iodine solution to test for the presence of starch in food. When iodine comes into contact with starch, it changes color from brown to blue-black.
I think you mean starch and to test for it you have to use iodine and this turns black if there is starch in your food if nothing happens then there is no starch in the food.
To test for the presence of starch in cells.
They test for carbohydrates. The Iodine reagent tests for starch. The Benedict's reagent tests for small sugars. Most carbohydrates are are made of sugar, and starch is a type of carbohydrate.
put a few drops of iodine on the subject, if it turns purple theres starch.
Hydrolysed starch would test negative in iodine testing because hydrolysis breaks down the starch into smaller sugar molecules like glucose, which no longer have the characteristic branching structure of starch that allows iodine to bind and form a blue-black complex. Therefore, with hydrolysed starch, there would be no starch molecules left to react with iodine and show a color change.
You can test for starch in food by dropping iodine on food on an agar plate, if it turns black, it contains starch.
Alcohol is not heated in the starch test because heating can denature the enzymes involved in the reaction, leading to inaccurate results. The purpose of the starch test is to detect the presence of starch by forming a blue-black color complex with iodine, which does not require heating.
You would use potato starch and water
Testing for the presence of starch is commonly done in biology and food science to detect the presence of carbohydrates. Iodine solution is typically used for this test, as it turns blue-black in the presence of starch. This test can be useful in identifying starch in foods or in plant tissues.