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Why are specimens are to be stained suspended in sterile water?
Specimens are stained in sterile water to prevent contamination of the sample, which could affect the staining process and lead to inaccurate results. Staining in sterile water helps maintain the integrity of the sample and ensures that the staining procedure is carried out under controlled conditions.
How is water potential measured and what methods are commonly used for this measurement?
Water potential is measured using a device called a pressure chamber, which applies pressure to a plant sample to determine its water potential. Another common method is the use of a psychrometer, which measures the water potential by comparing the humidity of a sample to the surrounding air. These methods are commonly used in research and agriculture to understand water availability in plants.
How do you put a sample in a microscope slide?
To put a sample on a microscope slide, place a small drop of liquid or a thin slice of solid sample on the center of the slide. Gently lower a coverslip over the sample to prevent movement or contamination. Press down gently to remove air bubbles and ensure the sample is spread evenly.
How do you test for lipids using emulsion test?
The procedure is for the sample to be suspended in ethanol, allowing lipids present to dissolve. The ethanolic solution is then decanted into water. Since lipids do not dissolve in water, when the ethanol is diluted, it falls out of solution to give an emulsion. b8d7e385-e2f2-47f5-8c06-26f0aee337b6 Y2:b8d7e385-e2f2-47f5-8c06-26f0aee337b6
What is the correct order by size of the following molecules water sucrose glucose and protein?
The correct order by size of the molecules listed would be protein > sucrose > glucose > water. Proteins are the largest molecules, followed by sucrose (a disaccharide), glucose (a monosaccharide), and then water.
What is the Correct procedure for handling sample of pond water?
place the sample on the microscope slide and observe it.
What is the correct emergency procedure for a mild cut?
immuerse it in cold water
Why are specimens are to be stained suspended in sterile water?
Specimens are stained in sterile water to prevent contamination of the sample, which could affect the staining process and lead to inaccurate results. Staining in sterile water helps maintain the integrity of the sample and ensures that the staining procedure is carried out under controlled conditions.
Why would it not be correct to blank the spectrophotometer with deionized water?
It would not be correct to blank the spectrophotometer with deionized water because deionized water does not contain any solutes that would contribute to the absorbance reading. The purpose of blanking the spectrophotometer is to zero the instrument by measuring the absorbance of a solution that only contains the solvent used in the sample. Using deionized water would not effectively remove any background interference from the sample, leading to inaccurate results. It is recommended to use a blank solution that closely matches the solvent and conditions of the sample being measured.
What is the correct procedure when the underground cold water supply to a disused outside WC is no longer required?
Disconnect the pipe at source and cap
Is a water is a sample is a sample of matter?
Yes!
What does procedure mean in science fair projects mean?
"Procedure" is basically a description of what you actually did ... not why, not what it means, just what you physically did. For example, something like "Water samples were obtained from local rivers. Each sample was filtered to remove large debris and a 25 ml aliquot from the sample was taken" followed by further description of what you then did to obtain the results (which you will list in a separate section).
What is the procedure for ash content determination in food samples?
The procedure for ash content determination in food samples begins with the selection of a sample that is believed to be representative of the entire portion. Then, the food is vaporized by dry ashing causing all minerals and water to be burned off.
How would you obtain clear water from a sample of muddy water?
we can get clear water from a given sample of a muddy water by the method of decantation.
What is the cleanest water sample?
rain water
The volume of a sample of water is 20cm3 the mass of?
In order to determine the mass of the water sample, you would need to know the density of water. The density of water is approximately 1 g/cm3. Therefore, the mass of a 20 cm3 sample of water would be 20 grams (20 cm3 * 1 g/cm3 = 20 grams).
A sample of zinc is placed in a graduated cylinder. The initial volume of water= 15.0mL and final volume of water and sample= 24.0mL. Determine the mass of the sample of zinc?
what?
