USABO Exam Questions and Answers
100% score Latest update 2026
Hydroxyl Group -
correct answer ✅-OH, polar
Carbonyl Group -
correct answer ✅C=O, polar
Carboxyl Group -
correct answer ✅-COOH, polar
Amino Group -
correct answer ✅-NH2, polar
Phosphate Group -
correct answer ✅-OPO3^2-, polar
Methyl Group -
correct answer ✅-CH3, non-polar
Carbohydrates -
correct answer ✅Broken down to glucose to provide energy.
Hydrocarbon skeletons.
, USABO Exam Questions and Answers
100% score Latest update 2026
Starch -
correct answer ✅A storage polysaccharide in plants consisting
entirely of glucose.
Glycogen -
correct answer ✅An extensively branched glucose storage
polysaccharide found in the liver and muscle of animals; the animal
equivalent of starch.
Cellulose -
correct answer ✅A substance (made of sugars) that is common in
the cell walls of many organisms.
Chitin -
correct answer ✅A structural polysaccharide, consisting of amino
sugar monomers, found in many fungal cell walls and in the
exoskeletons of all arthropods.
Lipids -
correct answer ✅Energy-rich organic compounds that are
hydrophobic, such as fats, oils, and waxes, that are made of carbon,
hydrogen, and oxygen.
100% score Latest update 2026
Hydroxyl Group -
correct answer ✅-OH, polar
Carbonyl Group -
correct answer ✅C=O, polar
Carboxyl Group -
correct answer ✅-COOH, polar
Amino Group -
correct answer ✅-NH2, polar
Phosphate Group -
correct answer ✅-OPO3^2-, polar
Methyl Group -
correct answer ✅-CH3, non-polar
Carbohydrates -
correct answer ✅Broken down to glucose to provide energy.
Hydrocarbon skeletons.
, USABO Exam Questions and Answers
100% score Latest update 2026
Starch -
correct answer ✅A storage polysaccharide in plants consisting
entirely of glucose.
Glycogen -
correct answer ✅An extensively branched glucose storage
polysaccharide found in the liver and muscle of animals; the animal
equivalent of starch.
Cellulose -
correct answer ✅A substance (made of sugars) that is common in
the cell walls of many organisms.
Chitin -
correct answer ✅A structural polysaccharide, consisting of amino
sugar monomers, found in many fungal cell walls and in the
exoskeletons of all arthropods.
Lipids -
correct answer ✅Energy-rich organic compounds that are
hydrophobic, such as fats, oils, and waxes, that are made of carbon,
hydrogen, and oxygen.
