However, consider lipids. These molecules do not have any associated charges due to their charged particles being perfectly balanced in the molecules. Therefore, when a lipid is put in water, it will not form an attractive relationship with water, as the polar water has nothing to be attracted to. Lipids are essential for cellular structure and life processes, so there must be a means to transport them in the water-based blood. To achieve this, the liver will remove a fatty acid from a "F" and replace it with a "G" group. Now, one part of the molecules with dissolve in water, but the other part will not. The part that does dissolve in water is said to be "H" . Since oil and water do not mix, when put together they will separate, forming an oil-water interface. If phospholipids are added to this "system", the charged heads will face the "I" , and the tail will be in the "J". "F" "G" "H" "I" "J"

Based on the context provided, here are the likely terms that fit into the blanks: - **"F"**: Fatty acid (or triglyceride) - **"G"**: Polar group (or hydrophilic group) - **"H"**: Hydrophilic (or water-soluble) - **"I"**: Water (or aqueous environment) - **"J"**: Oil (or hydrophobic region) So the completed passage would read: "However, consider lipids. These molecules do not have any associated charges due to their charged particles being perfectly balanced in the molecules. Therefore, when a lipid is put in water, it will not form an attractive relationship with water, as the polar water has nothing to be attracted to. Lipids are essential for cellular structure and life processes, so there must be a means to transport them in the water-based blood. To achieve this, the liver will remove a fatty acid from a fatty acid and replace it with a polar group. Now, one part of the molecules will dissolve in water, but the other part will not. The part that does dissolve in water is said to be hydrophilic. Since oil and water do not mix, when put together they will separate, forming an oil-water interface. If phospholipids are added to this system, the charged heads will face the water, and the tail will be in the oil."