Question 1

A teratogen is a cancer-causing substance.

Accepted Answer

A) True 
 B)False

Question 2

The study of the effects of poisons, their detection and identification and their antidotes is known as

Accepted Answer

A)   alkaloidism.
B)   carcinogenic testing.
C)   berylliosis.
D)   toxicology.E) C) and D)
F) A) and B)

Question 3

If a compound is a carcinogen in rats, it will also be a carcinogen for mice.

Accepted Answer

A) True 
 B)False

Question 4

What type of damage do all corrosive poisons cause to living tissue?

Accepted Answer

Corrosives cause the...

Question 5

The LD50 value for a given compound and species is the same no matter how the substance is administered.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following amino acids undergoes oxidation in the presence of photochemical smog?

Accepted Answer

A)   tryptophan
B)   glycine
C)   leucine
D)   threonineE) A) and D)
F) All of the above

Question 7

The best way to handle hazardous wastes is

Accepted Answer

A)   to bury them.
B)   to incinerate them.
C)   to chemically modify them.
D)   to avoid producing them.E) All of the above
F) B) and D)

Question 8

Cyanides increase the ability of hemoglobin to carry oxygen.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following will make the most effective poison for rats and mice?

Accepted Answer

A)   ethyl alcohol, LD50 = 2.08 g/kg
B)   acetaminophen, LD50 = 0.340 g/kg
C)   ethylene glycol, LD50 = 0.00686 g/kg
D)   ricin, LD50 = 0.000005 mg/kgE) A) and B)
F) A) and C)

Question 10

Actylcholinesterase acts to change acetylcholine to

Accepted Answer

A)   acetic acid, water and choline.
B)   water and choline.
C)   water and acetic acid.
D)   acetic acid and choline.E) All of the above
F) A) and B)

Question 11

The Ames test is used to screen for

Accepted Answer

A)   all potential poisons.
B)   heavy metal poisons.
C)   mutagens.
D)   carcinogens.E) B) and C)
F) A) and D)

Question 12

The average fatal dose of hydrogen cyanide is

Accepted Answer

A)   5 to 10 mg.
B)   50 mg.
C)   5 to 20 g.
D)   200 to 300 g.E) C) and D)
F) All of the above

Question 13

Cyanide acts by blocking the oxidation of glucose in the cell.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following will have anticarcinogenic activity?

Accepted Answer

A)   aromatic amines, such as β-naphthylamine
B)   oncogenes
C)   vitamin C, vitamin E, and β-carotene
D)   polycyclic aromatic hydrocarbons, such as 3,4-benzopyreneE) C) and D)
F) A) and D)

Question 15

The antidote for mercury poisoning is

Accepted Answer

A)   atropine.
B)   nicotine.
C)   BAL.
D)   coniine.E) A) and D)
F) B) and C)

Question 16

An example of an alkaloid is

Accepted Answer

A)   estradiol.
B)   acetic acid.
C)   methionine.
D)   caffeine.E) B) and D)
F) All of the above

Question 17

In the body, ethanol goes through the following steps.

Accepted Answer

A)   ethanol  →\rightarrow→  acetic acid  →\rightarrow→ acetaldehyde  →\rightarrow→  carbon dioxide and water
B)   ethanol  →\rightarrow→  carbon dioxide and water  →\rightarrow→  acetaldehyde  →\rightarrow→  acetic acid
C)   ethanol  →\rightarrow→ acetic acid  →\rightarrow→  carbon dioxide and water  →\rightarrow→  acetaldehyde
D)   ethanol  →\rightarrow→  acetaldehyde  →\rightarrow→ acetic acid  →\rightarrow→  carbon dioxide and water E) B) and C)
F) A) and D)

Question 18

Which of the following is NOT used to gather evidence about whether a compound causes cancer in humans?

Accepted Answer

A)   bacterial screening for mutagenesis (the Ames test) 
B)   animal tests
C)   measurement of birth defects
D)   epidemiological studiesE) A) and B)
F) A) and C)

Question 19

Which of the following statements about the role of liver enzymes is most correct?

Accepted Answer

A)   Liver enzymes always change potential toxins to substances that can be easily excreted from the body.
B)   Liver enzymes may change an inert compound to a more reactive and harmful molecule.
C)   Liver enzymes can help the body to bring the four humors (blood, phlegm, black bile and yellow bile)  back into a healthy balance.
D)   Liver enzymes always convert potential toxins to substances that contain free radicals.E) B) and C)
F) All of the above

Question 20

Which of the following statements best describes the circumstances that lead to chemical tragedies?

Accepted Answer

A)   Hazardous and poisonous chemicals should be banned or destroyed so that accidents do not occur.
B)   Most tragedies occur because of misuse of hazardous or poisonous chemicals.
C)   Hazardous and poisonous chemicals cannot be made safe.
D)   The risks of using hazardous chemicals always outweigh the benefits.E) B) and C)
F) C) and D)

Exam 22: Poisons

The average fatal dose of hydrogen cyanide is

Correct AnswerverifiedShow Answer

Actylcholinesterase acts to change acetylcholine to

Correct AnswerverifiedShow Answer

Which of the following is NOT used to gather evidence about whether a compound causes cancer in humans?

Correct AnswerverifiedShow Answer

The Ames test is used to screen for

Correct AnswerverifiedShow Answer

Which of the following statements best describes the circumstances that lead to chemical tragedies?

Correct AnswerverifiedShow Answer

Which of the following amino acids undergoes oxidation in the presence of photochemical smog?

Correct AnswerverifiedShow Answer

Which of the following will make the most effective poison for rats and mice?

Correct AnswerverifiedShow Answer

Which of the following will have anticarcinogenic activity?

Correct AnswerverifiedShow Answer

What type of damage do all corrosive poisons cause to living tissue?

Correct AnswerverifiedCorrosives cause the...View AnswerShow Answer

The LD50 value for a given compound and species is the same no matter how the substance is administered.

Correct AnswerverifiedShow Answer

Cyanide acts by blocking the oxidation of glucose in the cell.

Correct AnswerverifiedShow Answer

A teratogen is a cancer-causing substance.

Correct AnswerverifiedShow Answer

The best way to handle hazardous wastes is

Correct AnswerverifiedShow Answer

The antidote for mercury poisoning is

Correct AnswerverifiedShow Answer

If a compound is a carcinogen in rats, it will also be a carcinogen for mice.

Correct AnswerverifiedShow Answer

Which of the following statements about the role of liver enzymes is most correct?

Correct AnswerverifiedShow Answer

Cyanides increase the ability of hemoglobin to carry oxygen.

Correct AnswerverifiedShow Answer

The study of the effects of poisons, their detection and identification and their antidotes is known as

Correct AnswerverifiedShow Answer

In the body, ethanol goes through the following steps.

Correct AnswerverifiedShow Answer

An example of an alkaloid is

Correct AnswerverifiedShow Answer

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Corrosives cause the...
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The LD₅₀ value for a given compound and species is the same no matter how the substance is administered.

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