Question

what functional feature(s) does the phosphate group contribute to the structure of a phospholipid? select all that apply. place where bonds can form between adjoining phospholipids place to attach another small charged molecule place to attach fatty acids nonpolar group that avoids water negative charge to interact with water part c what holds phospholipids together in a bilayer formation? ionic interactions between phospholipid tails covalent bonds between polar heads hydrophilic and hydrophobic interactions with water

Explanation:

1. For the first question:

• The phosphate group in a phospholipid has a negative charge which allows it to interact with water (it is hydrophilic). It also can serve as a place to attach another small charged molecule. Bonds do not form between adjoining phospholipids at the phosphate - group location in the way described. Fatty acids attach to the glycerol part, not the phosphate group. The phosphate group is polar, not non - polar.

1. For the second question:

• Phospholipids in a bilayer are held together by hydrophilic and hydrophobic interactions with water. The polar (hydrophilic) heads interact with water, and the non - polar (hydrophobic) tails avoid water and interact with each other. There are no ionic interactions between phospholipid tails, and there are no covalent bonds between polar heads in the context of bilayer formation. The interaction of cis - double bonds in tails with polar heads is not what holds the bilayer together.

Answer:

1. For the first question: place to attach another small charged molecule, negative charge to interact with water
2. For the second question: hydrophilic and hydrophobic interactions with water