BIOLOGY
PROTEINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Protein with an insufficient amount of amino acids for good health.
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Protein that is not bio-available.
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All answers correct
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Protein that takes a lot of digesting.
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Detailed explanation-1: -Low biological value (LBV) Low biological value proteins are missing one. or more essential amino acids. The foods that provide these are mainly foods from plants, such as peas, beans, lentils, nuts, seeds and cereals. The exception is gelatine, which is an animal-based product, and is a LBV protein.
Detailed explanation-2: -LBV and HBV. The biological value relates to how many amino acids are present in a protein. If a food is missing one or more of the indispensable amino acids, it has a low biological value (LBV). For example, baked beans have an LBV. If a food has all the indispensable amino acids, it has a high biological value (HBV).
Detailed explanation-3: -LBV foods: peas, beans, nuts, lentils, cereals (rice, oats, barley, rye, millet, sorghum) and cereal products (bread, pasta), seeds and gelatine. Protein alternatives are manufactured food products, with a high protein content, e.g. mycoprotein (Quorn), tofu, TVP and tempeh. They are used instead of meat in meals.
Detailed explanation-4: -Biological value measures protein quality by calculating the nitrogen used for tissue formation divided by the nitrogen absorbed from food. This product is multiplied by 100 and expressed as a percentage of nitrogen utilized.