Answer:
a tea bag in water
Explanation:
a tea bag place in a cup of hot water will defuse into the water
When nitrogen molecules that are found from lightnings dissolve in rain, forming nitrates, and are carried towards Earth, the plants can now use this as a source of energy for their photosynthetic capacity. The enormous amounts of energy produced by lightning enables the nitrogen molecules to combine with oxygen from the air forming nitrogen oxides that are water soluble and falls back to earth.
Answer: salivary glands
Explanation: i just remember from 4th grade health class
Answer:
1. Ser and Gln are polar amino acids.
2. The Leu side chain does not form hydrogen bonds with other amino acids.
3. Phe can undergo oxidation to form Tyr.
4. Lysine has one stereocenter (chiral center).
Explanation:
Serine and glutamine are the polar amino acids with uncharged side group. Serine has a "CH2OH" group as its side chain and the presence of hydroxyl group makes it a polar amino acid. Glutamine is one of the amides derived from other amino acids present in proteins.
Leucine is a nonpolar amino acid with an aliphatic side chain and tends to cluster within the proteins to stay away from the surrounding watery medium. Its aliphatic R group does not form any hydrogen bonds to other amino acids.
Phenylalanine is a nonpolar amino acid with an aromatic R group. Oxidation of aromatic R group of phenylalanine converts it into tyrosine which has an additional hydroxyl group in its side chain.
The chiral center is the carbon to which four different functional groups are bonded. The central alpha carbon atom of lysine is bonded to an amino group, carboxyl group, a hydrogen atom, and one positively charged R group which in turn makes it a chiral center.