Question

Questions
1.what are the nutrients needed for our body?

2.write the function of carbohydrate.

3.plenty of carbohydrate are present in_______
4.write the procedure for iodine test?

5.what is your findings for iodine test?
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Answer 1

Answer:

1. 6 Essential Nutrients and Why Your Body Needs Them

Protein.

Carbs.

Fats.

Vitamins.

Minerals.

Water.

Fibers

2. The four primary functions of carbohydrates in the body are to provide energy, store energy, build macromolecules, and spare protein and fat for other uses. Glucose energy is stored as glycogen, with the majority of it in the muscle and liver.

3. Vegetables: like potato

4. Peel off the skin of any vegetables e.g. potato and fruits as these are often impermeable. Use a clean spatula to remove samples of powdered food. ...

Add a few ( 2-3) drops of bench iodine solution potassium to a piece of solid food on a white tile.

Make observations.

5. A test for the presence of starch in which the sample turns blue-black in color when a few drops of potassium iodide solution is placed on the sample. The reaction is due to the formation of polyiodide chains from the reaction of starch and iodine.

Answer 2

Explanation:

1. The six essential nutrients are vitamins, minerals, protein, fats, water, and carbohydrate.

2. a)Providing energy and regulation of blood glucose.

b)Sparing the use of proteins for energy.

c)Breakdown of fatty acids and preventing ketosis.

d)Biological recognition processes.

e)Flavor and Sweeteners.

f)Dietary fiber.

3. Foods high in carbohydrates include breads, fruits and vegetables, as well as milk products. Carbohydrates are the sugars, starches and fibers found in fruits, grains, vegetables and milk products.

4. SOLID SAMPLE

Peel off the skin of any vegetables e.g. potato and fruits as these are often impermeable. Use a clean spatula to remove samples of powdered food. Avoid cross contamination with other foods.

Add a few ( 2-3) drops of bench iodine solution potassium to a piece of solid food on a white tile.

Make observations.

LIQUID SAMPLE

Add 10 cm3 of the liquid food sample to a clean, dry test tube.

Add about 5 drops of iodine solution to the test tube.

Note any colour changes.

To prepare a control, perform steps 1 -3 for de-ionized water.

5. The appearance of a blue-black or purple color represents a positive test, indicating the presence of starch. If there is no change in color, the result is negative and indicates the absence of starch

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