food tests testlet

which of these refers to a step in the method for testing for protein

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a brick red precipitate

• you may see a green or orange colour if there is a less weak (but still positive response)

• none of the above

which of these refers to a step in the method for testing for reducing sugars

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a brick red precipitate

• you may see a green or orange colour if there is a less weak (but still positive response)

• none of the above

which of these refers to a step in the method for testing for glucose

• add a couple of drops of iodine

• add the first test tube to a test tube with an equal volume of water in it

• look for a brick red precipitate

• you may see a green or orange colour if there is a less weak (but still positive response)

• none of the above

which of these refers to a step in the method for testing for protein

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a colour change to blue/black

• you may see a green or orange colour if there is a less weak (but still positive response)

• Add Biuret's reagent

which of these refers to a step in the method for testing for starch

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a colour change to blue/black

• you may see a green or orange colour if there is a less weak (but still positive response)

• Add Biuret's reagent

which of these refers to a step in the method for testing for lipids

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a colour change to blue/black

• you may see a green or orange colour if there is a less weak (but still positive response)

• look for a colour change to a milky white emulsion

which of these refers to a step in the method for testing for reducing sugars

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a colour change to blue/black

• you may see a green or orange colour if there is a less weak (but still positive response)

• look for a colour change to a milky white emulsion

when you add Benedict's solution to a solution, which of these might be your next step when testing for glucose?

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a colour change to blue/black

• you may see a green or orange colour if there is a less weak (but still positive response)

• look for a colour change to a milky white emulsion

which of these is not a step in the test for starch?

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a colour change to blue/black

• you may see a green or orange colour if there is a less weak (but still positive response)

• look for a colour change to a milky white emulsion

which of these is not a step in the test for lipids?

• place in a water bath and heat for a few minutes

• add the first test tube to a test tube with an equal volume of water in it

• look for a colour change to blue/black

• you may see a green or orange colour if there is a less weak (but still positive response)

• look for a colour change to a milky white emulsion