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Biology 101 Midterm Exam 1 2026 |
Certified Exam Questions And Answers
Evolution - correct-answer -common characteristics found throughout diverse
species, the descent with gradual modifications of ancestral species to modern-
day ones.
Chemistry - correct-answer -the scientific study of matter
Matter - correct-answer -anything that occupies space and has mass (substance).
can be in the form of gas, liquid, or solid. referred as the three phases of matter.
Atoms - correct-answer -all matter has this, the smallest unites that retain all of
the properties of their type of matter/element.
Molecules - correct-answer -atoms are usually bonded to each other to form this.
a group of two or more atoms held together by covalent bonds.
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Elements - correct-answer -a substance that cannot be broken down into other
substances by chemical means. scientists recognize 92 occurring in nature.
Compounds - correct-answer -a substance containing two or more elements in a
fixed ratio.
Chemical reactions - correct-answer -a process leading to chemical changes in
matter, involving the making and/or breaking of chemical bonds.
Reactants - correct-answer -a starting material in a chemical reaction
Products - correct-answer -an ending material in a chemical reaction.
subatomic particles - correct-answer -protons, neutrons, and electrons; particles
smaller then an atom.
Neutrons - correct-answer -an electrically neutral particle. does not have an
electrical charge. found in the nucleus of an atom.
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Protons - correct-answer -a subatomic particle with a single unit of positive
electrical charge, found in the nucleus of an atom.
Nucleus (plural; nuclei) - correct-answer -an atom's central core, containing
protons and neutrons. the genetic control center of a eukaryotic cell.
Electrons - correct-answer -a subatomic particle with a single unit of negative
electrical charge. one or more electrons move around the nucleus of an atom.
Isotope - correct-answer -a variant form of an atom. isotopes of an element have
the same number of protons and electrons but different number of neutrons.
Ions - correct-answer -an atom or molecule that has gained or lost one or more
electron, thus acquiring an electrical charge.
Chemical bonds - correct-answer -an attraction between two atoms resulting from
a sharing of outer-shell electrons or the presence of opposite charges on the
atoms. the bonded atoms gain complete outer electron shells.
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Ionic Bonds - correct-answer -an attraction between two ions with opposite
electrical charges. the electrical attraction of the opposite charges holds the ions
together.
Covalent Bonds - correct-answer -an attraction between atoms that share one or
more pairs of outer-shell electrons
Nonpolar Bond - correct-answer -the electrons are shared equally between the
two atoms in the bond
Polar bond - correct-answer -unequal sharing of electrons. electrons are more
strongly attracted to one atom than the other. making it slightly negative and the
other atom slightly positive.
Hydrogen Bonds - correct-answer -a type of weak chemical bond formed when a
partially positive hydrogen atom from one polar molecule is attracted to the
partially negative atom in another molecule.
Biology 101 Midterm Exam 1 2026 |
Certified Exam Questions And Answers
Evolution - correct-answer -common characteristics found throughout diverse
species, the descent with gradual modifications of ancestral species to modern-
day ones.
Chemistry - correct-answer -the scientific study of matter
Matter - correct-answer -anything that occupies space and has mass (substance).
can be in the form of gas, liquid, or solid. referred as the three phases of matter.
Atoms - correct-answer -all matter has this, the smallest unites that retain all of
the properties of their type of matter/element.
Molecules - correct-answer -atoms are usually bonded to each other to form this.
a group of two or more atoms held together by covalent bonds.
,2|Page
Elements - correct-answer -a substance that cannot be broken down into other
substances by chemical means. scientists recognize 92 occurring in nature.
Compounds - correct-answer -a substance containing two or more elements in a
fixed ratio.
Chemical reactions - correct-answer -a process leading to chemical changes in
matter, involving the making and/or breaking of chemical bonds.
Reactants - correct-answer -a starting material in a chemical reaction
Products - correct-answer -an ending material in a chemical reaction.
subatomic particles - correct-answer -protons, neutrons, and electrons; particles
smaller then an atom.
Neutrons - correct-answer -an electrically neutral particle. does not have an
electrical charge. found in the nucleus of an atom.
,3|Page
Protons - correct-answer -a subatomic particle with a single unit of positive
electrical charge, found in the nucleus of an atom.
Nucleus (plural; nuclei) - correct-answer -an atom's central core, containing
protons and neutrons. the genetic control center of a eukaryotic cell.
Electrons - correct-answer -a subatomic particle with a single unit of negative
electrical charge. one or more electrons move around the nucleus of an atom.
Isotope - correct-answer -a variant form of an atom. isotopes of an element have
the same number of protons and electrons but different number of neutrons.
Ions - correct-answer -an atom or molecule that has gained or lost one or more
electron, thus acquiring an electrical charge.
Chemical bonds - correct-answer -an attraction between two atoms resulting from
a sharing of outer-shell electrons or the presence of opposite charges on the
atoms. the bonded atoms gain complete outer electron shells.
, 4|Page
Ionic Bonds - correct-answer -an attraction between two ions with opposite
electrical charges. the electrical attraction of the opposite charges holds the ions
together.
Covalent Bonds - correct-answer -an attraction between atoms that share one or
more pairs of outer-shell electrons
Nonpolar Bond - correct-answer -the electrons are shared equally between the
two atoms in the bond
Polar bond - correct-answer -unequal sharing of electrons. electrons are more
strongly attracted to one atom than the other. making it slightly negative and the
other atom slightly positive.
Hydrogen Bonds - correct-answer -a type of weak chemical bond formed when a
partially positive hydrogen atom from one polar molecule is attracted to the
partially negative atom in another molecule.
