Water is a very polar substance that will not interact well with nonpolar macromolecules. Enzymes (proteins), oligosaccharides (carbohydrates), and nucleic acids all contain polar regions that make them soluble in aqueous environments. Lipids, however, are hydrocarbons and generally lack a polar region. Lipids would not be soluble in water, but would be soluble in nonpolar organic solvents, like chloroform. We can conclude that cholesterol is a lipid.

Water is a very polar substance that will not interact well with nonpolar macromolecules. Enzymes (proteins), oligosaccharides (carbohydrates), and nucleic acids all contain polar regions that make them soluble in aqueous environments. Lipids, however, are hydrocarbons and generally lack a polar region. Lipids would not be soluble in water, but would be soluble in nonpolar organic solvents, like chloroform. We can conclude that cholesterol is a lipid.

ATP stands for adenosine triphosphate and GTP stands for guanosine triphosphate. Both of them are nucleic acids, meaning that they must contain a pentose sugar, a nitrogenous base, and phosphate groups. Both ATP and GTP contain three phosphate groups. The only difference between ATP and GTP is their nitrogenous base. ATP contains adenine whereas GTP contains guanine. Recall that adenine and guanine are both purines.

ATP and GTP do not contain any pyrimidines (cytosine, thymine, and uracil).

ATP stands for adenosine triphosphate and GTP stands for guanosine triphosphate. Both of them are nucleic acids, meaning that they must contain a pentose sugar, a nitrogenous base, and phosphate groups. Both ATP and GTP contain three phosphate groups. The only difference between ATP and GTP is their nitrogenous base. ATP contains adenine whereas GTP contains guanine. Recall that adenine and guanine are both purines.

ATP and GTP do not contain any pyrimidines (cytosine, thymine, and uracil).

A phospholipid has a hydrophobic tail and a hydrophillic head. The hydrocarbon section composes the hydrophobic tail and dislikes water. The phosphate group composes of the hydrophillic head and likes water. The combination makes a semi-permeable membrane that we know as the lipid bilayer.

Amphipathic molecules have both a polar and nonpolar region. This amphipathic quality allows phospholipids to create the plasma membrane in eukaryotic cells. The polar region is the phosphate head, which interacts with the aqueous cytosol and extracellular environment. The nonpolar region is the fatty acid tail, which is sequestered in the bilayer of the membrane and helps reduce the permeability to certain molecules.

is the base molecular formula for carbohydrates. Carbohydrates vary based on multiples of this formula (i.e. is the formula for glucose).

A phospholipid has a hydrophobic tail and a hydrophillic head. The hydrocarbon section composes the hydrophobic tail and dislikes water. The phosphate group composes of the hydrophillic head and likes water. The combination makes a semi-permeable membrane that we know as the lipid bilayer.

Amphipathic molecules have both a polar and nonpolar region. This amphipathic quality allows phospholipids to create the plasma membrane in eukaryotic cells. The polar region is the phosphate head, which interacts with the aqueous cytosol and extracellular environment. The nonpolar region is the fatty acid tail, which is sequestered in the bilayer of the membrane and helps reduce the permeability to certain molecules.

is the base molecular formula for carbohydrates. Carbohydrates vary based on multiples of this formula (i.e. is the formula for glucose).