Phospholipids are major components of cell membranes which contain a (1) head and two hydrophobic tails. A different lipid class, the (2), consists of three fatty acids bonded to glycerol and is primarily used for long-term energy storage. In animal cell membranes, (3) helps to regulate membrane fluidity. This molecule also serves as a precursor for the synthesis of (4) hormones.
Which row shows the correct sequence of missing words?
1: hydrophilic | 2: triglycerides | 3: cholesterol | 4: steroid
1: hydrophobic | 2: glycolipids | 3: cholesterol | 4: peptide
1: hydrophilic | 2: glycolipids | 3: glycoproteins | 4: steroid
1: hydrophobic | 2: triglycerides | 3: cholesterol | 4: protein
