Pre-AP Biology STAAR UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Biomolecules - CORRECT ANSWER - Organic molecules which combine to form living
organisms; includes carbohydrates, lipids, proteins, and nucleic acids.
Carbohydrates - CORRECT ANSWER - Biomolecule of carbon, hydrogen, and oxygen
combined in 1:2:1 ratio; include simple and complex sugars; molecules which store energy, add
structure, & provide sugars for DNA and RNA; monomer - monosaccharaide ; polymer -
polysaccharide.
Lipids - CORRECT ANSWER - Biomolecule composed of carbon, hydrogen, and oxygen;
includes fats, oils, waxes, and sterols; important component of cell membranes.
Proteins - CORRECT ANSWER - Biomolecule composed of nitrogen, carbon, hydrogen,
and oxygen; made up of monomer amino acids; enzyme is an example.
Nucleic Acids - CORRECT ANSWER - Biomolecule made up of nucleotides; nucleotides
contain a phosphate sugar and nitrogen base; examples include DNA and RNA.
Monomer - CORRECT ANSWER - Single unit ; small piece of biomolecule.
Polymer - CORRECT ANSWER - Multi piece unit; made up of smaller monomers.
Condensation - CORRECT ANSWER - A chemical reaction in which water or another
simple substance is released by the combination of two or more molecules, aka dehydration
synthesis.
Dehydration Synthesis - CORRECT ANSWER - A chemical reaction that builds up
molecules by losing water molecules.
ACTUAL Exam Questions and CORRECT
Answers
Biomolecules - CORRECT ANSWER - Organic molecules which combine to form living
organisms; includes carbohydrates, lipids, proteins, and nucleic acids.
Carbohydrates - CORRECT ANSWER - Biomolecule of carbon, hydrogen, and oxygen
combined in 1:2:1 ratio; include simple and complex sugars; molecules which store energy, add
structure, & provide sugars for DNA and RNA; monomer - monosaccharaide ; polymer -
polysaccharide.
Lipids - CORRECT ANSWER - Biomolecule composed of carbon, hydrogen, and oxygen;
includes fats, oils, waxes, and sterols; important component of cell membranes.
Proteins - CORRECT ANSWER - Biomolecule composed of nitrogen, carbon, hydrogen,
and oxygen; made up of monomer amino acids; enzyme is an example.
Nucleic Acids - CORRECT ANSWER - Biomolecule made up of nucleotides; nucleotides
contain a phosphate sugar and nitrogen base; examples include DNA and RNA.
Monomer - CORRECT ANSWER - Single unit ; small piece of biomolecule.
Polymer - CORRECT ANSWER - Multi piece unit; made up of smaller monomers.
Condensation - CORRECT ANSWER - A chemical reaction in which water or another
simple substance is released by the combination of two or more molecules, aka dehydration
synthesis.
Dehydration Synthesis - CORRECT ANSWER - A chemical reaction that builds up
molecules by losing water molecules.
