BIO 156 EXAM 1 QUESTIONS AND
ANSWERS GRADED A+ 2026
Hierarchy of organization -Correct Answer ✔--atoms, molecules, cell, tissue, organs,
organ system, organism
-organism, population, community, ecosystem, biosphere
characteristics of living things -Correct Answer ✔-organized, need nutrients and energy,
respond to stimuli, reproduce and develop, adapt
Scientific process -Correct Answer ✔-observation, hypothesis, experiment/further
observation, data, conclusion
homeostasis -Correct Answer ✔-internal balance, process by which organisms maintain
a relatively stable internal environment
element -Correct Answer ✔-92 natural occurring, Carbon hydrogen, nitrogen, oxygen,
phosphorus, sulfur
CHNOPS -Correct Answer ✔-Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
atom -Correct Answer ✔-smallest particle of elements
atomic number -Correct Answer ✔-number of neutrons in the atom
atomic mass -Correct Answer ✔-neutrons + protons
, periodic table -Correct Answer ✔-vertical- groups, chemically similar
horizontal- periods, larger and larger
isotopes -Correct Answer ✔-atoms of the same element that have different numbers of
neutrons
electron shells -Correct Answer ✔-different energy levels referred to as electron shells
oclet rule -Correct Answer ✔-inner shell has 2 orbitals, others have 8, or multiples of 8
if 3 or less -Correct Answer ✔-tends to donate
if 5 or more -Correct Answer ✔-tends to recieve
molecule -Correct Answer ✔-two or more atoms bonded together
compound -Correct Answer ✔-group of atoms where at least one is different
chemical bonding -Correct Answer ✔-bonds between atoms caused by electrons in
outer most shells, bond formation is called reaction
ionic bond -Correct Answer ✔-chemical attraction between ions of opposite charge
ex: sodium and chloride.
ANSWERS GRADED A+ 2026
Hierarchy of organization -Correct Answer ✔--atoms, molecules, cell, tissue, organs,
organ system, organism
-organism, population, community, ecosystem, biosphere
characteristics of living things -Correct Answer ✔-organized, need nutrients and energy,
respond to stimuli, reproduce and develop, adapt
Scientific process -Correct Answer ✔-observation, hypothesis, experiment/further
observation, data, conclusion
homeostasis -Correct Answer ✔-internal balance, process by which organisms maintain
a relatively stable internal environment
element -Correct Answer ✔-92 natural occurring, Carbon hydrogen, nitrogen, oxygen,
phosphorus, sulfur
CHNOPS -Correct Answer ✔-Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
atom -Correct Answer ✔-smallest particle of elements
atomic number -Correct Answer ✔-number of neutrons in the atom
atomic mass -Correct Answer ✔-neutrons + protons
, periodic table -Correct Answer ✔-vertical- groups, chemically similar
horizontal- periods, larger and larger
isotopes -Correct Answer ✔-atoms of the same element that have different numbers of
neutrons
electron shells -Correct Answer ✔-different energy levels referred to as electron shells
oclet rule -Correct Answer ✔-inner shell has 2 orbitals, others have 8, or multiples of 8
if 3 or less -Correct Answer ✔-tends to donate
if 5 or more -Correct Answer ✔-tends to recieve
molecule -Correct Answer ✔-two or more atoms bonded together
compound -Correct Answer ✔-group of atoms where at least one is different
chemical bonding -Correct Answer ✔-bonds between atoms caused by electrons in
outer most shells, bond formation is called reaction
ionic bond -Correct Answer ✔-chemical attraction between ions of opposite charge
ex: sodium and chloride.
