WCU PHYS 261 - MIDTERM EXAM QUESTIONS AND
CORRECT ANSWERS |ALREADY GRADED A+|| BRAND
NEW VERSION!!! 2026
What is physiology? - CORRECT ANSWER -the study of function of the body - how the body
parts work and carry out their life sustaining activities
Cell - CORRECT ANSWER -The basic unit of structure and function in living things
Level of organization - CORRECT ANSWER -atom, molecule, cell, tissue, organ, organ system,
organism, population of one species, eco system of diff species, biosphere
Homeostasis - CORRECT ANSWER -a constant state of natural balance within the body
placebo effect - CORRECT ANSWER -a positive result from a healing method due to a
symbolic or otherwise nonmaterial factor
nocebo effect - CORRECT ANSWER -a negative placebo effect due to the expectation of
adverse consequences from receiving treatment
dependent variable - CORRECT ANSWER -WHAT YOU MEASURE- ON Y AXIS
independent variable - CORRECT ANSWER -variable that is manipulated
control group - CORRECT ANSWER -the group that does not receive the experimental
treatment.
Atom - CORRECT ANSWER -Basic unit of matter
,3 subatomic particles - CORRECT ANSWER -protons, neutrons, electrons
Protons - CORRECT ANSWER -an atom that gains/loses protons becomes different element
Electron - CORRECT ANSWER -becomes ion in same element
Neutron - CORRECT ANSWER -becomes isotope of same element
atomic number - CORRECT ANSWER -number on top
atomic mass - CORRECT ANSWER -(at the bottom)Number of protons and neutrons
free radicals - CORRECT ANSWER -unpaired electrons- normally pairs. will try to steal an
electron from another mol
covalent bond - CORRECT ANSWER -a strong chemical bond resulting from the sharing of a
pair of electrons between two atoms
ionic bond - CORRECT ANSWER -A chemical bond resulting from the attraction between
oppositely charged(cation and anions) ions
-opposites attract
Ions - CORRECT ANSWER -positively and negatively charged atoms
(Na+ = lost one electron)
hydrogen bond - CORRECT ANSWER -weak/partial
Flourine, Nitrogen, Oxygen
, water surface tension, boiling, and freezing
van der Waals forces - CORRECT ANSWER -weak, nonspecific forces between molecules.
CHO - CORRECT ANSWER -most abundant
Carbon, Hydrogen, Oxygen
mono/disacch - simple sugar
poly- complex
Lipids - CORRECT ANSWER -C & H little O
nonpolar
triglyceride- most abundant/important
phospholipids-eicosanoids/steroids
PRO - CORRECT ANSWER -made up of AA(20 in total- obtained in diet)
most versatile biomol
Nucleotide - CORRECT ANSWER -energy + info transfer
ATP, ADP, cAMP
nucleic acids - CORRECT ANSWER -DNA and RNA store + transmit genetic info
Hydrophobic - CORRECT ANSWER -do not dissolve in water
nonpolar
Hydrophilic - CORRECT ANSWER -dissolves easily in water
polar
CORRECT ANSWERS |ALREADY GRADED A+|| BRAND
NEW VERSION!!! 2026
What is physiology? - CORRECT ANSWER -the study of function of the body - how the body
parts work and carry out their life sustaining activities
Cell - CORRECT ANSWER -The basic unit of structure and function in living things
Level of organization - CORRECT ANSWER -atom, molecule, cell, tissue, organ, organ system,
organism, population of one species, eco system of diff species, biosphere
Homeostasis - CORRECT ANSWER -a constant state of natural balance within the body
placebo effect - CORRECT ANSWER -a positive result from a healing method due to a
symbolic or otherwise nonmaterial factor
nocebo effect - CORRECT ANSWER -a negative placebo effect due to the expectation of
adverse consequences from receiving treatment
dependent variable - CORRECT ANSWER -WHAT YOU MEASURE- ON Y AXIS
independent variable - CORRECT ANSWER -variable that is manipulated
control group - CORRECT ANSWER -the group that does not receive the experimental
treatment.
Atom - CORRECT ANSWER -Basic unit of matter
,3 subatomic particles - CORRECT ANSWER -protons, neutrons, electrons
Protons - CORRECT ANSWER -an atom that gains/loses protons becomes different element
Electron - CORRECT ANSWER -becomes ion in same element
Neutron - CORRECT ANSWER -becomes isotope of same element
atomic number - CORRECT ANSWER -number on top
atomic mass - CORRECT ANSWER -(at the bottom)Number of protons and neutrons
free radicals - CORRECT ANSWER -unpaired electrons- normally pairs. will try to steal an
electron from another mol
covalent bond - CORRECT ANSWER -a strong chemical bond resulting from the sharing of a
pair of electrons between two atoms
ionic bond - CORRECT ANSWER -A chemical bond resulting from the attraction between
oppositely charged(cation and anions) ions
-opposites attract
Ions - CORRECT ANSWER -positively and negatively charged atoms
(Na+ = lost one electron)
hydrogen bond - CORRECT ANSWER -weak/partial
Flourine, Nitrogen, Oxygen
, water surface tension, boiling, and freezing
van der Waals forces - CORRECT ANSWER -weak, nonspecific forces between molecules.
CHO - CORRECT ANSWER -most abundant
Carbon, Hydrogen, Oxygen
mono/disacch - simple sugar
poly- complex
Lipids - CORRECT ANSWER -C & H little O
nonpolar
triglyceride- most abundant/important
phospholipids-eicosanoids/steroids
PRO - CORRECT ANSWER -made up of AA(20 in total- obtained in diet)
most versatile biomol
Nucleotide - CORRECT ANSWER -energy + info transfer
ATP, ADP, cAMP
nucleic acids - CORRECT ANSWER -DNA and RNA store + transmit genetic info
Hydrophobic - CORRECT ANSWER -do not dissolve in water
nonpolar
Hydrophilic - CORRECT ANSWER -dissolves easily in water
polar
