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What are the uses of starch and iodine solutions in the determination of amylase activity?
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What solutions make a purple precipitate?
Iodine and starch.
What is the non-metallic element present in antiseptic solutions?
Iodine (or a iodide) can be used in antiseptic solutions.
What is iodine solubility?
Iodine is highly soluble in water. It is also soluble in iodine solutions, chloroform, carbon tetrachloride and carbon disulphide among others.
Is the non metal iodine strongly reactive?
Iodine is the least reactive of the halogens. In fact, iodine is so stable that it can be purchased in solutions for disinfectant use. However, iodine is far from inert, and can be very reactive when exposed to certain chemicals.
What is the color of iodine?
It is a violet-dark grey As a gas iodine is violet, as solid is very brown. The color in solutions depends on the solvent - the ethanolic solution is brown. The melted iodine is also brown.
Why the activity of the enzyme amylase changes as the temperature changes?
the time is related to enzymatic activity of amylase because as the sol'n or substance has been added to the iodine sol'n, the soln' will change color and its time gives you an idea w/c of the sol'n react faster than the other. the time is related to enzymatic activity of amylase because as the sol'n or substance has been added to the iodine sol'n, the soln' will change color and its time gives you an idea w/c of the sol'n react faster than the other. the time is related to enzymatic activity of amylase because as the sol'n or substance has been added to the iodine sol'n, the soln' will change color and its time gives you an idea w/c of the sol'n react faster than the other.
Is it necessary to determine iodine vlue in oil?
Yes, determination of iodine value is necessary in oil.
What happens when iodine reacts with starch that has been digested with amylase?
When iodine is added to an amylaze enzyme activity in an experiment such as a agar plate with wells, it does two things. When tested with starch, the color of the liquid will turn a brownish-yellowish color meaning that enzyme reactions had occured. Also on a well agar plate the idione will repel in a circle around the well. most of the time around 2 cm in diameter.
How starch can give a negative iodine test?
Starch can give a negative iodine test when starch is mixed with iodine in water. The iodine gets stuck in the coils of beta amylase molecules and the starch forces the iodine atoms into a linear arrangement in the central groove of the coil.
Why would a negative iodine test for starch indicate a positive result for the enzymatic degradation of starch by amylase?
Perhaps the iodine solution was old and gave a false negative.
What does iodine do to the activity inside the cell?
It stops the activity within the cell.
What solutions make a purple precipitate?
Iodine and starch.
What is the non-metallic element present in antiseptic solutions?
Iodine (or a iodide) can be used in antiseptic solutions.
What does lugol's iodine stain do to the activity of the cell?
I just did a lab in biology called "How Plant and Animal Cells Differ" and in the packet it had that question. The answer is: Lugol's iodine stain stops the activity of the cell. It kills whatever specimen it is staining.
What is iodine soluble in?
Iodine is highly soluble in water. It is also soluble in iodine solutions, chloroform, carbon tetrachloride and carbon disulphide among others.
What is iodine solubility?
Iodine is highly soluble in water. It is also soluble in iodine solutions, chloroform, carbon tetrachloride and carbon disulphide among others.
What is the theoretical achromatic point of salivary amylase?
If we add salivary amylase to any solution ( eg:iodine solution) the colour of solution changes to blue.THE TIME TAKEN BY THE SALIVARY AMYLASE TO CHANGE ITS(iodine solution) COLOUR TO BLUE IS CALLED ACROMATIC POINT OF SALIVARY AMYLASE. ie, the time upto which the solution is colourless and after that it gains blue colour.
