OPENSTAX MICROBIOLOGY TEST BANK
PRACTICE TEST 2026 TESTED QUESTIONS
WITH VERIFIED ANSWERS GRADED A+
⩥ micronutrients. Answer: vitamins and minerals
⩥ trace elements. Answer: An element indispensable for life but required
in extremely minute amounts.
⩥ organic molecule. Answer: A molecule containing carbon that is a part
of or produced by living systems.
⩥ biomolecules. Answer: organic molecules which combine to form
living organisms; includes carbohydrates, lipids, proteins and nucleic
acids
⩥ carbon skeleton. Answer: The chain of carbon atoms that forms the
structural backbone of an organic molecule.
⩥ isomers. Answer: Two different molecules that have the same
chemical formula
, ⩥ structural formula. Answer: a formula that shows the arrangement of
atoms in the molecule of a compound.
⩥ structural isomers. Answer: differ in the covalent arrangements of
their atoms
⩥ stereoisomers. Answer: Compounds with the same structural formula
but with a different arrangement of the atoms in space.
⩥ enantiomers. Answer: isomers that are mirror images of each other
⩥ chirality. Answer: A property of a compound to exist in both left and
right forms; occurs whenever a compound contains an asymmetric
carbon
⩥ functional groups. Answer: the components of organic molecules that
are most commonly involved in chemical reactions
⩥ macromolecules. Answer: A very large organic molecule composed of
many smaller molecules
⩥ monomers. Answer: building blocks of polymers
PRACTICE TEST 2026 TESTED QUESTIONS
WITH VERIFIED ANSWERS GRADED A+
⩥ micronutrients. Answer: vitamins and minerals
⩥ trace elements. Answer: An element indispensable for life but required
in extremely minute amounts.
⩥ organic molecule. Answer: A molecule containing carbon that is a part
of or produced by living systems.
⩥ biomolecules. Answer: organic molecules which combine to form
living organisms; includes carbohydrates, lipids, proteins and nucleic
acids
⩥ carbon skeleton. Answer: The chain of carbon atoms that forms the
structural backbone of an organic molecule.
⩥ isomers. Answer: Two different molecules that have the same
chemical formula
, ⩥ structural formula. Answer: a formula that shows the arrangement of
atoms in the molecule of a compound.
⩥ structural isomers. Answer: differ in the covalent arrangements of
their atoms
⩥ stereoisomers. Answer: Compounds with the same structural formula
but with a different arrangement of the atoms in space.
⩥ enantiomers. Answer: isomers that are mirror images of each other
⩥ chirality. Answer: A property of a compound to exist in both left and
right forms; occurs whenever a compound contains an asymmetric
carbon
⩥ functional groups. Answer: the components of organic molecules that
are most commonly involved in chemical reactions
⩥ macromolecules. Answer: A very large organic molecule composed of
many smaller molecules
⩥ monomers. Answer: building blocks of polymers
