BIOL 212 EXAM 1 EXAM PREP 2026 Q AND
A COMPLETE REVIEW WITH ACCURATE
ANSWERS
◉ Organism
Answer: a living entity made up of one or more cells
◉ 5 fundamental characteristics of life
Answer: cells, replication, evolution, information, energy
◉ Cell theory
Answer: all organisms are made of cells, all existing cells are
produced by other living cells, the cell is the most basic unit of life
◉ Two hypotheses of the cell theory
Answer: -cells come from preexisting cells
-spontaneous generation
◉ Basic atomic structure
Answer: protons (+), neutrons (0), electrons(-)
, ◉ Isotopes
Answer: Any of several forms of an element that differ in the number
of neutrons contained in their nuclei
◉ Radioactive isotope
Answer: A version of an element that has an unstable nucleus, which
will release radiation energy as it decays to a more stable form.
Decay often results in the radioisotope becoming a different
element.
◉ Electron orbital
Answer: hold up to 2 electrons, grouped into levels called shells
◉ Valence shell
Answer: an electron in the outermost shell- involved in chemical
bonding
◉ Covalent bond
Answer: A chemical bond that involves sharing a pair of electrons
between atoms in a molecule
◉ nonpolar covalent bond
Answer: A type of covalent bond in which electrons are shared
equally between two atoms of similar electronegativity.
A COMPLETE REVIEW WITH ACCURATE
ANSWERS
◉ Organism
Answer: a living entity made up of one or more cells
◉ 5 fundamental characteristics of life
Answer: cells, replication, evolution, information, energy
◉ Cell theory
Answer: all organisms are made of cells, all existing cells are
produced by other living cells, the cell is the most basic unit of life
◉ Two hypotheses of the cell theory
Answer: -cells come from preexisting cells
-spontaneous generation
◉ Basic atomic structure
Answer: protons (+), neutrons (0), electrons(-)
, ◉ Isotopes
Answer: Any of several forms of an element that differ in the number
of neutrons contained in their nuclei
◉ Radioactive isotope
Answer: A version of an element that has an unstable nucleus, which
will release radiation energy as it decays to a more stable form.
Decay often results in the radioisotope becoming a different
element.
◉ Electron orbital
Answer: hold up to 2 electrons, grouped into levels called shells
◉ Valence shell
Answer: an electron in the outermost shell- involved in chemical
bonding
◉ Covalent bond
Answer: A chemical bond that involves sharing a pair of electrons
between atoms in a molecule
◉ nonpolar covalent bond
Answer: A type of covalent bond in which electrons are shared
equally between two atoms of similar electronegativity.
