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What test would you perform to find out if food sample contains starch?
Wiki User
∙ 14y ago
Although this may seem annoyingly obvious, it is called the starch test: add several drops of iodine solution to a sample, and any starch present will cause a dark blue/purple/black coolour to form.
Wiki User
∙ 14y ago
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What cell contains certain structures that perform functions for the cell?
that would be the organelles
A scientist has analyzed the chemicals that make of a sample of an unknown substance. Which chemicals would be the best indicator that the unknown substance is a plant?
cellulose and starch
A scientist has analyzed the chemicals that make of a sample of an unknown substance Which chemicals would be the best indicator that the unknown substance is a plant?
Cellulose and starch
How can you test a substance to see if its water?
What is the enzyme that digests starch? Amylase digests starch into the disaccharide, maltose. What is the starch test? Grind the food up and add a few drops of iodine to the substance. If it contains starch then it will turn blue, black What colour dose the tests turn in the presence of starch? For the starch iodine test is performed in which the starch reacts with iodine to produce dark blue colour which confirms the presence of starch. for glucose benedict's and fehling's test is performed. benedict's test: 1 ml sample is mixed with 1 ml of benedicts solution and the heated upto boiling if the colur changes to brick red then it confirms the presence of glucose fehling's test: similarly 1 ml fehling's solution I & fehling's solution II each in taken together and to it 1 ml of the sample is takenon then heated uptill boiling. if the colour changes to brick red the it confirms the presence of glucose. Where is the enzyme found in the body? The enzyme breaks down starch into glucose? Like all enzymes, amylase is a catalyst, so it only speeds up reactions which would happen anyway. However, without the enzyme many reactions would be extremely slow. So starch could break down into glucose in the absence of amylase (provided water was present), but only very slowly.
What condition should use the standard addition method?
The standard addition would be used when determining the concentration of a sample because of matrix effect problems (matrix effect occurs when unknown sample contains many impurities).
How would you distinguish a sample of peat from a sample of mudstone that contains fossil plant fragments?
Peat would remain largely unconsolidated. Mudstone is a rock.
How would you test afood sample to see if it contained starch & fat?
Eat it then see if it gave me reflux, if it did then gaviscon is the only option
Which food source would provide a quick source of energy for the cells of the body?
I think a Banana would because it contains starch.
What cell contains certain structures that perform functions for the cell?
that would be the organelles
Why would icing sugar test positive for starch?
Icing sugar contains cornflour or wheat flour sometimes to make it lighter and to make it flow easier. The starch content would come from either of those.
A scientist has analyzed the chemicals that make of sample of an unknown substance Which chemicals would be the best indicator that the unknown substance is a plant?
Cellulose and starch
A scientist has analyzed the chemicals that make of a sample of an unknown substance. Which chemicals would be the best indicator that the unknown substance is a plant?
cellulose and starch
A scientist has analyzed the chemicals that make of a sample of an unknown substance Which chemicals would be the best indicator that the unknown substance is a plant?
Cellulose and starch
What approximate mass would a sample of naturally occurring boron B that contains?
10.81x10^6amu
Which part of the plant cell has starch?
Iodine binds to starch and would be primarily used to stain plant cells. The organelles that would be stained darkest would be the nucleus, amyloplast, which store starches, and chloroplasts which produce it.
What happens to bread when you put iodine on it?
When you pore iodine on a piece of bread, the bread will turn black. Why? Because, the iodine has a chemical reaction with the starch in the bread. This method is great to find out if a food contains starch (I suggest a potato to try next!).
In what sport would you perform a 'Curveball'?
You can perform a curveball in many sports, Soccer, Cricket, Tennis, Baseball, almost every sport that contains a ball
