BIO 156 EXAM 1 ACTUAL QUESTIONS AND
CORRECT ANSWER | GRADED A+ | NEW
UPDATE 2025
Hierarchy of organization - ANSWER -atoms, molecules, cell, tissue, organs,
organ system, organism
-organism, population, community, ecosystem, biosphere
characteristics of living things - ANSWER organized, need nutrients and energy,
respond to stimuli, reproduce and develop, adapt
Scientific process - ANSWER observation, hypothesis, experiment/further
observation, data, conclusion
homeostasis - ANSWER internal balance, process by which organisms maintain
a relatively stable internal environment
element - ANSWER 92 natural occurring, Carbon hydrogen, nitrogen, oxygen,
phosphorus, sulfur
CHNOPS - ANSWER Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
atom - ANSWER smallest particle of elements
atomic number - ANSWER number of neutrons in the atom
, atomic mass - ANSWER neutrons + protons
periodic table - ANSWER vertical- groups, chemically similar
horizontal- periods, larger and larger
isotopes - ANSWER atoms of the same element that have different numbers of
neutrons
electron shells - ANSWER different energy levels referred to as electron shells
oclet rule - ANSWER inner shell has 2 orbitals, others have 8, or multiples of 8
if 3 or less - ANSWER tends to donate
if 5 or more - ANSWER tends to recieve
molecule - ANSWER two or more atoms bonded together
compound - ANSWER group of atoms where at least one is different
chemical bonding - ANSWER bonds between atoms caused by electrons in
outer most shells, bond formation is called reaction
CORRECT ANSWER | GRADED A+ | NEW
UPDATE 2025
Hierarchy of organization - ANSWER -atoms, molecules, cell, tissue, organs,
organ system, organism
-organism, population, community, ecosystem, biosphere
characteristics of living things - ANSWER organized, need nutrients and energy,
respond to stimuli, reproduce and develop, adapt
Scientific process - ANSWER observation, hypothesis, experiment/further
observation, data, conclusion
homeostasis - ANSWER internal balance, process by which organisms maintain
a relatively stable internal environment
element - ANSWER 92 natural occurring, Carbon hydrogen, nitrogen, oxygen,
phosphorus, sulfur
CHNOPS - ANSWER Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
atom - ANSWER smallest particle of elements
atomic number - ANSWER number of neutrons in the atom
, atomic mass - ANSWER neutrons + protons
periodic table - ANSWER vertical- groups, chemically similar
horizontal- periods, larger and larger
isotopes - ANSWER atoms of the same element that have different numbers of
neutrons
electron shells - ANSWER different energy levels referred to as electron shells
oclet rule - ANSWER inner shell has 2 orbitals, others have 8, or multiples of 8
if 3 or less - ANSWER tends to donate
if 5 or more - ANSWER tends to recieve
molecule - ANSWER two or more atoms bonded together
compound - ANSWER group of atoms where at least one is different
chemical bonding - ANSWER bonds between atoms caused by electrons in
outer most shells, bond formation is called reaction
