Glutamic acid is a hydrophilic amino acid. At physiological pH, it is negatively charged. Carboxylic acid group ( -COOH ) in its side chain is responsible for both, the hydrophilic nature as well as negative charge of the glutamic acid. Because of its hydrophilic nature it is found on the surface of protein facing aqueous solution i.e. it is an extrinsic amino acid.
Valine on the other hand is a hydrophobic amino acid. It is neutral at physiological pH. Valine has an aliphatic side chain which is responsible for both, it's hydrophobic nature as well as neutral charge. Since it is hydrophobic, it is found inside of protein molecules i.e. it is an intrinsic amino acid.
Answer:
Carbohydrates. Carbohydrates are the third major component of plasma membranes. They are always found on the exterior surface of cells and are bound either to proteins (forming glycoproteins) or to lipids
Answer:
It allows material to stay in and prevent outside material from entering
Explanation:
Answer is: p<span>olymerase chain reaction (PCR).
</span>Polymerase chain reaction<span> (</span>PCR<span>) is a technique used in </span>molecular biology<span> to </span>multiply<span> a one or more copies of a segment of </span>DNA,<span> developing thousands to millions of copies of a particular </span>DNA sequence. PRC was d<span>eveloped in 1983 by </span>Kary Mullis (<span>1944 - ).</span>
