Question

Task1. Fill in the gaps using the words in the box. tissues; average; decrease; animals; molecules; proteins; building; nitrogen; body 1. All our foodstuffs - fats, starches, sugars, and_ contain the elements of carbon, hydrogen, and oxygen in varying proportions. 2. Most plants make their own protein by combining the _from nitrogen-containing materials in the the proteins. 4. We must get our proteins soil with carbon dioxide from the air and with water. 3. Animals and people cannot use such simple raw materials for from plants and other_ 5. Next to water, protein is the most plentiful sub- stance in the 6. The proteins in the body_ are not there as fixed, unchanging substances deposited for a life-time. 7. Some or parts of molecules always are breaking down and others are being built as replacements. 8. The total daily protein needs increase steadily from birth to adolescence and then_ ____________to a maintenance level for adulthood. 9. The recommended daily protein allowances for adults are 70 grams for the average man who weighs about 154 pounds, and 58 grams for the_ woman who weighs 128 pounds.

Answer 1

1. All our foodstuffs - fats, starches, sugars, and proteins contain the elements of carbon, hydrogen, and oxygen in varying proportions.
2. Most plants make their own protein by combining the nitrogen from nitrogen-containing materials in the soil with carbon dioxide from the air and with water.
3. Animals and people cannot use such simple raw materials for building tissues; they must get their proteins from plants and other animals.
4. We must get our proteins from plants and other animals.
5. Next to water, protein is the most plentiful substance in the body.
6. The proteins in the body are not there as fixed, unchanging substances deposited for a lifetime.
7. Some molecules or parts of molecules always are breaking down and others are being built as replacements.
8. The total daily protein needs increase steadily from birth to adolescence and then decrease to a maintenance level for adulthood.
9. The recommended daily protein allowances for adults are 70 grams for the average man who weighs about 154 pounds, and 58 grams for the average woman who weighs 128 pounds.

Answer 2

1. All our foodstuffs - fats, starches, sugars, and proteins contain the elements of carbon, hydrogen, and oxygen in varying proportions. 2. Most plants make their own protein by combining the nitrogen from nitrogen-containing materials in the soil with carbon dioxide from the air and with water. 3. Animals and people cannot use such simple raw materials for building proteins from plants and other animals. 4. We must get our proteins from the food we eat, as our bodies cannot produce them on their own. 5. Next to water, protein is the most plentiful substance in the body. 6. The proteins in the body are not there as fixed, unchanging substances deposited for a lifetime. 7. Some parts of molecules always are breaking down and others are being built as replacements. 8. The total daily protein needs increase steadily from birth to adolescence and then decrease to a maintenance level for adulthood. 9. The recommended daily protein allowances for adults are 70 grams for the average man who weighs about 154 pounds, and 58 grams for the average woman who weighs 128 pounds.