RIO BIO 156 COMPLETE MIDTERM STUDY
GUIDE 2026 ROBUST QUESTIONS AND
CAREFULLY ASSESSED WELL DEFINED
RESPONSES GRADED A+
⩥ 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
GUIDE 2026 ROBUST QUESTIONS AND
CAREFULLY ASSESSED WELL DEFINED
RESPONSES GRADED A+
⩥ 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
