TEST 2026 PRACTICE QUESTIONS AND
ACCURATE ANSWERS GRADED A+
◉ Acids: Answer: substances that provide hydrogen ions (H+) and
lower pH.
◉ Bases: Answer: Substances that provide hydroxide ions (OH-) and
raise pH.
◉ Buffers and how they work to maintain homeostasis: Answer:
Readily absorb excess H+ or OH-, keeping the pH of the body
carefully maintained within the proper range.
◉ Understand what functional groups are (look at picture on
phone): Answer: Groups of atoms within a molecule that confer
consistent specific properties to these molecules.
-Each of the four types of macromolecules has its own set
of characteristic functional groups.
, -Functional groups often interact with other functional groups via
hydrogen bonds.
◉ Biological Macromolecules: Answer: Large molecules, necessary
for life, that are built from smaller organic molecules.
◉ Organic Molecules: Answer: Smaller molecules that make up
larger ones, all contain carbon, and may also contain hydrogen,
oxygen, nitrogen, and some other minor elements.
◉ Monomers: Answer: The individual subunits that macromolecules
consist of, monomers are the building blocks of macromolecules.
◉ Polymers: Answer: Monomers that are linked together by covalent
bonds.
◉ Hydrophilic: Answer: Interacts well with water (water-loving).
◉ Hydrophobic: Answer: Does not interact well with water (water-
fearing).
◉ Denaturation: Answer: Changes in protein structure that leads to
changes in function (protein structure and shape can be changed if
chemical interactions are broken, and the protein unfolds).