PHYS 261 ACTUAL EXAM SCRIPT 2026
EXAMINATION TEST QUESTIONS AND
CORRECT ANSWERS
◍ Cell Answer: The basic unit of structure and function in living
things
◍ Level of organization Answer: atom, molecule, cell, tissue, organ,
organ system, organism, population of one species, eco system of diff
species, biosphere
◍ Homeostasis Answer: a constant state of natural balance within
the body
◍ placebo effect Answer: a positive result from a healing method
due to a symbolic or otherwise nonmaterial factor
◍ nocebo effect Answer: a negative placebo effect due to the
expectation of adverse consequences from receiving treatment
◍ dependent variable Answer: WHAT YOU MEASURE- ON Y
AXIS
◍ independent variable Answer: variable that is manipulated
, ◍ control group Answer: the group that does not receive the
experimental treatment.
◍ Atom Answer: Basic unit of matter
◍ 3 subatomic particles Answer: protons, neutrons, electrons
◍ Protons Answer: an atom that gains/loses protons becomes
different element
◍ Electron Answer: becomes ion in same element
◍ Neutron Answer: becomes isotope of same element
◍ atomic number Answer: number on top
◍ atomic mass Answer: (at the bottom)Number of protons and
neutrons
◍ free radicals Answer: unpaired electrons- normally pairs. will try
to steal an electron from another mol
◍ covalent bond Answer: a strong chemical bond resulting from the
sharing of a pair of electrons between two atoms
, ◍ ionic bond Answer: A chemical bond resulting from the attraction
between oppositely charged(cation and anions) ions
-opposites attract
◍ Ions Answer: positively and negatively charged atoms
(Na+ = lost one electron)
◍ hydrogen bond Answer: weak/partial
Flourine, Nitrogen, Oxygen
water surface tension, boiling, and freezing
◍ van der Waals forces Answer: weak, nonspecific forces between
molecules.
◍ CHO Answer: most abundant
Carbon, Hydrogen, Oxygen
mono/disacch - simple sugar
poly- complex
◍ Lipids Answer: C & H little O
nonpolar
triglyceride- most abundant/important
phospholipids-eicosanoids/steroids
EXAMINATION TEST QUESTIONS AND
CORRECT ANSWERS
◍ Cell Answer: The basic unit of structure and function in living
things
◍ Level of organization Answer: atom, molecule, cell, tissue, organ,
organ system, organism, population of one species, eco system of diff
species, biosphere
◍ Homeostasis Answer: a constant state of natural balance within
the body
◍ placebo effect Answer: a positive result from a healing method
due to a symbolic or otherwise nonmaterial factor
◍ nocebo effect Answer: a negative placebo effect due to the
expectation of adverse consequences from receiving treatment
◍ dependent variable Answer: WHAT YOU MEASURE- ON Y
AXIS
◍ independent variable Answer: variable that is manipulated
, ◍ control group Answer: the group that does not receive the
experimental treatment.
◍ Atom Answer: Basic unit of matter
◍ 3 subatomic particles Answer: protons, neutrons, electrons
◍ Protons Answer: an atom that gains/loses protons becomes
different element
◍ Electron Answer: becomes ion in same element
◍ Neutron Answer: becomes isotope of same element
◍ atomic number Answer: number on top
◍ atomic mass Answer: (at the bottom)Number of protons and
neutrons
◍ free radicals Answer: unpaired electrons- normally pairs. will try
to steal an electron from another mol
◍ covalent bond Answer: a strong chemical bond resulting from the
sharing of a pair of electrons between two atoms
, ◍ ionic bond Answer: A chemical bond resulting from the attraction
between oppositely charged(cation and anions) ions
-opposites attract
◍ Ions Answer: positively and negatively charged atoms
(Na+ = lost one electron)
◍ hydrogen bond Answer: weak/partial
Flourine, Nitrogen, Oxygen
water surface tension, boiling, and freezing
◍ van der Waals forces Answer: weak, nonspecific forces between
molecules.
◍ CHO Answer: most abundant
Carbon, Hydrogen, Oxygen
mono/disacch - simple sugar
poly- complex
◍ Lipids Answer: C & H little O
nonpolar
triglyceride- most abundant/important
phospholipids-eicosanoids/steroids
