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PHAR 100 FINAL EXAM 2026
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Which one of the statements regarding use of food additives is
correct?
a) Food additives are substances added to food to improve only
appearance or texture
b) Food additives which are obtained as natural products are
invariably less toxic than synthetic additives
c) Antibiotics are widely used in Canada to preserve food as they
are highly effective
d) Smoke is both a food preservative and flavouring agent -
correct answer -d) Smoke is both a food preservative and
flavouring agent
Which is an example an anthropogenic air pollutant?
a) Automobile exhaust
b) Bisphenol A
c) Ash from volcanic eruptions
d) Chelating agents - correct answer -a) Automobile exhaust
, Page | 2
Which statement regarding pesticides is correct?
a) Pesticides are used to intentionally kill bacteria
b) Organophosphorus and organochloride insecticides cause
toxicity by the same mechanism
c) Pestides are not toxic to humans
d) The manufacturing of Agent Orange is associated with TCDD
contamination - correct answer -d) The manufacturing of Agent
Orange is associated with TCDD contamination
Which organism is at the greatest risk from pharmaceuticals in the
environment?
a) Humans
b) Fish
c) Birds
d) Large land mammals - correct answer -b) Fish
Which one of the statements regarding pharmaceuticals in the
environment is correct?
a) The minimum effective therapeutic dose is used for human risk
assessment
b) Sewage treatment plans are able to successfully remove all
pharmaceuticals from wastewater
, Page | 3
c) Antibiotics in environment are not able to contribute to the
development of human antibiotic resistance - correct answer -a)
The minimum effective therapeutic dose is used for human risk
assessment
Which environmental exposure increases cancer risk?
a) Increased alcohol intake
b) Decreased sun exposure
c) Diet high in fruits and vegetables
d) HPV vaccination - correct answer -a) Increased alcohol intake
Which modifiable factor causes the most cancer deaths?
a) Tobacco and nutrition
b) Infections and alcohol drinking
c) Food additives and medicinal drugs
d) Sedentary lifestyle - correct answer -a) Tobacco and nutrition
Which one of the following statements regarding a phase 3
clinical trial is correct?
a) The drug under investigation is compared to a placebo or an
established drug.
, Page | 4
b) Random allocation of patients to treatment or control is not
recommended.
c) Patients selected always represent a wide diversity of the
disease state.
d) The measured outcome or endpoint is different for every
patient. - correct answer -a) The drug under investigation is
compared to a placebo or an established drug.
What is the most common method by which drugs cross
membranes?
a) Simple diffusions through aqueous channels
b) Simple diffusion through lipid
c) Active transport
d) Filtration through pores - correct answer -b) Simple diffusion
through lipids
The appearance of symptoms that are generally opposite to the
drug's effect after cessation of use of said drug, signifies:
a) Addiction
b) Tolerance
c) Withdrawal
d) Cross tolerance - correct answer -c) Withdrawal
PHAR 100 FINAL EXAM 2026
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Which one of the statements regarding use of food additives is
correct?
a) Food additives are substances added to food to improve only
appearance or texture
b) Food additives which are obtained as natural products are
invariably less toxic than synthetic additives
c) Antibiotics are widely used in Canada to preserve food as they
are highly effective
d) Smoke is both a food preservative and flavouring agent -
correct answer -d) Smoke is both a food preservative and
flavouring agent
Which is an example an anthropogenic air pollutant?
a) Automobile exhaust
b) Bisphenol A
c) Ash from volcanic eruptions
d) Chelating agents - correct answer -a) Automobile exhaust
, Page | 2
Which statement regarding pesticides is correct?
a) Pesticides are used to intentionally kill bacteria
b) Organophosphorus and organochloride insecticides cause
toxicity by the same mechanism
c) Pestides are not toxic to humans
d) The manufacturing of Agent Orange is associated with TCDD
contamination - correct answer -d) The manufacturing of Agent
Orange is associated with TCDD contamination
Which organism is at the greatest risk from pharmaceuticals in the
environment?
a) Humans
b) Fish
c) Birds
d) Large land mammals - correct answer -b) Fish
Which one of the statements regarding pharmaceuticals in the
environment is correct?
a) The minimum effective therapeutic dose is used for human risk
assessment
b) Sewage treatment plans are able to successfully remove all
pharmaceuticals from wastewater
, Page | 3
c) Antibiotics in environment are not able to contribute to the
development of human antibiotic resistance - correct answer -a)
The minimum effective therapeutic dose is used for human risk
assessment
Which environmental exposure increases cancer risk?
a) Increased alcohol intake
b) Decreased sun exposure
c) Diet high in fruits and vegetables
d) HPV vaccination - correct answer -a) Increased alcohol intake
Which modifiable factor causes the most cancer deaths?
a) Tobacco and nutrition
b) Infections and alcohol drinking
c) Food additives and medicinal drugs
d) Sedentary lifestyle - correct answer -a) Tobacco and nutrition
Which one of the following statements regarding a phase 3
clinical trial is correct?
a) The drug under investigation is compared to a placebo or an
established drug.
, Page | 4
b) Random allocation of patients to treatment or control is not
recommended.
c) Patients selected always represent a wide diversity of the
disease state.
d) The measured outcome or endpoint is different for every
patient. - correct answer -a) The drug under investigation is
compared to a placebo or an established drug.
What is the most common method by which drugs cross
membranes?
a) Simple diffusions through aqueous channels
b) Simple diffusion through lipid
c) Active transport
d) Filtration through pores - correct answer -b) Simple diffusion
through lipids
The appearance of symptoms that are generally opposite to the
drug's effect after cessation of use of said drug, signifies:
a) Addiction
b) Tolerance
c) Withdrawal
d) Cross tolerance - correct answer -c) Withdrawal
