Which of the following features of phospholipids allows for the phospholipid to interact with the aqueous environment in the extracellular media and the intracellular cytosolic environment?
1. the three-carbon glycenal backbone
2. fatty acids, attached to the three-carbon glycerol backbone of the phospholipid through ester linkages
3. phospholipids do not interact with aqueous environments, such as the extracellular between the cell and the aqueous extracellular and intracellular environments o medium or the cytosolic medium. phospholipids provide a purely hydrophobic barrier
4. the presence of a polar or charged head group attached to the phosphate

The correct answer is 4. The presence of a polar or charged head group attached to the phosphate.

Explanation:

Lipids have a hydrophilic head and a hydrophobic tail. This allows them to form structures where the tails are hidden on the inside, and the heads interact with the water molecules. This conformation is the best energetically and allows the lipids to interact with aqueous environments.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.