Answer to Question 1
THIS IS ANOTHER KEY LEARNING POINTTHEY NEED TO
UNDERSTAND THAT ALL AMINO ACIDS ARE REQUIRED, THE BODY CAN
MAKE SOME AND NOT OTHERS. IF THE BODY CAN MAKE SOME, WHICH
ARE REALLY MORE IMPORTANT TO SURVIVALTHE ONES THEY CAN
MAKE OR THE ONES THEY CANNOT? HINT: WHAT HAPPENS WHEN WE
TAKE SOME ESSENTIAL AMINO ACIDS OUT OF THE DIETDO THE
ANIMALS SURVIVE (YES). BUT THEY DON'T THRIVE.
A critically important concept in nutrition is that of dietary essential amino acids (Figure 4.1, 50). An essential amino acid is one that the animal cannot make or cannot make enough of to live well or even survive for long periods. Therefore, essential amino acids must be consumed in the diet. If an animal can make enough of the amino acid in its own body, it is nonessential in the diet, which means the animal can make it from other amino
acids and glucose. Nonessential amino acids for most species include glycine, alanine, cystine, cysteine, serine, glutamate, aspartate, tyrosine, glutamine, asparagine, proline, ornithine and citrulline. There are species differences; for examples, birds need more glycine
Answer to Question 2
Probably the most important function of proteins is enzyme action. An enzyme is a chemical catalyst that allows a reaction to take place without a change in the catalyst itself.
Most metabolism proceeds because there is a protein enzyme that catalyzes it. Without protein enzymes, life as we know it' would not exist.
Species-rich floras of chalk grassland compared to species-poor floras of acid soils.
A closer look at the citric acid cycle
Saturated and Unsaturated Fatty Acid
Connections of a nitric acid plant, intermediate pressure type
Acid-Reactive Salts
The pH scale and relationship between bicarbonate and carbonic acid