Biology: The Core chapter 1-3 exam study
guide ACTUAL QUESTIONS AND
CORRECT ANSWERS
Protons - CORRECT ANSWERS A subatomic particle with a single unit
of positive electrical charge.
Found in the nucleus of an atom. (Positive Charge)
Neutrons - CORRECT ANSWERS Electrically neutral particle found in
the nucleus of an atom. (Neutral charge)
Electrons - CORRECT ANSWERS Subatomic particle with a single unit
of negative electrical charge. (Negative Charge)
Atomic Number - CORRECT ANSWERS Number of protons in each
atom of a particular element.(Equal to # of protons)
Ions - CORRECT ANSWERS Atom or molecule that has gained or lost
one or more electrons, thus acquiring an electrical charge. (Gaining or losing
electrons)
Isotopes - CORRECT ANSWERS Variant form of an atom. Isotopes of
an element have the same number of protons and electrons but different number
of neutrons.
Molecular Formula - CORRECT ANSWERS a chemical formula that
indicates the kinds of atoms and the number of each kind in a molecule of a
compound.
, Ionic Bonds - CORRECT ANSWERS Attraction btw two ions with
opposite electrical charges. The electrical attraction of the opposite charges
holds the ions together.
Hydrogen Bonds - CORRECT ANSWERS Weak chemical bond formed
when a partially positive hydrogen atom from one polar molecule is attracted to
the partially negative atom in another molecule.
Polar covalent Bonds - CORRECT ANSWERS Covalent bond btw
atoms that differ in their attraction to electrons. The shared electrons are pulled
closer to one atom, making it slightly negative and the other atom slightly
positive.
Isomers - CORRECT ANSWERS One of two or more molecules with
the same molecular formula but different structures and this different properties.
Condensation Synthesis Reactions - CORRECT ANSWERS Put two or
more molecule together by removing a water molecule.
Hydrolysis Reactions - CORRECT ANSWERS Breaking two or more
molecules apart by adding water.
Oxidation - CORRECT ANSWERS Loss of electrons
Reduction - CORRECT ANSWERS Gain of electrons
Catabolism - CORRECT ANSWERS Releasing energy by breaking
down molecules.
guide ACTUAL QUESTIONS AND
CORRECT ANSWERS
Protons - CORRECT ANSWERS A subatomic particle with a single unit
of positive electrical charge.
Found in the nucleus of an atom. (Positive Charge)
Neutrons - CORRECT ANSWERS Electrically neutral particle found in
the nucleus of an atom. (Neutral charge)
Electrons - CORRECT ANSWERS Subatomic particle with a single unit
of negative electrical charge. (Negative Charge)
Atomic Number - CORRECT ANSWERS Number of protons in each
atom of a particular element.(Equal to # of protons)
Ions - CORRECT ANSWERS Atom or molecule that has gained or lost
one or more electrons, thus acquiring an electrical charge. (Gaining or losing
electrons)
Isotopes - CORRECT ANSWERS Variant form of an atom. Isotopes of
an element have the same number of protons and electrons but different number
of neutrons.
Molecular Formula - CORRECT ANSWERS a chemical formula that
indicates the kinds of atoms and the number of each kind in a molecule of a
compound.
, Ionic Bonds - CORRECT ANSWERS Attraction btw two ions with
opposite electrical charges. The electrical attraction of the opposite charges
holds the ions together.
Hydrogen Bonds - CORRECT ANSWERS Weak chemical bond formed
when a partially positive hydrogen atom from one polar molecule is attracted to
the partially negative atom in another molecule.
Polar covalent Bonds - CORRECT ANSWERS Covalent bond btw
atoms that differ in their attraction to electrons. The shared electrons are pulled
closer to one atom, making it slightly negative and the other atom slightly
positive.
Isomers - CORRECT ANSWERS One of two or more molecules with
the same molecular formula but different structures and this different properties.
Condensation Synthesis Reactions - CORRECT ANSWERS Put two or
more molecule together by removing a water molecule.
Hydrolysis Reactions - CORRECT ANSWERS Breaking two or more
molecules apart by adding water.
Oxidation - CORRECT ANSWERS Loss of electrons
Reduction - CORRECT ANSWERS Gain of electrons
Catabolism - CORRECT ANSWERS Releasing energy by breaking
down molecules.
