Question 1

The average fatal dose of hydrogen cyanide is

Accepted Answer

A) 5 to 10 mg. 
B) 50 mg. 
C) 5 to 10 g. 
D) 200 to 300 g. 
A) 5 to 10 mg. 
B) 50 mg. 
C) 5 to 10 g. 
D) 200 to 300 g. B

Question 2

The simplest and least expensive method for testing for possible carcinogenic activity is

Accepted Answer

A) the Ames test. 
B) animal testing. 
C) epidemiological studies. 
D) human testing. 
A) the Ames test. 
B) animal testing. 
C) epidemiological studies. 
D) human testing. A

Question 3

The Ames test assumes that most carcinogens will also be mutagens.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following is the most poisonous?

Accepted Answer

A) botulin 
B) strychnine 
C) nicotine 
D) coniine 
A) botulin 
B) strychnine 
C) nicotine 
D) coniine

Question 5

Nitrate acts as a poison by

Accepted Answer

A) oxidizing hemoglobin to methemoglobin, which cannot carry oxygen. 
B) reacting with enzymes that break down toxic wastes in the liver. 
C) interfering with oxidative enzymes. 
D) blocking cell protein synthesis. 
A) oxidizing hemoglobin to methemoglobin, which cannot carry oxygen. 
B) reacting with enzymes that break down toxic wastes in the liver. 
C) interfering with oxidative enzymes. 
D) blocking cell protein synthesis.

Question 6

Which is a corrosive poison?

Accepted Answer

A) carbon monoxide 
B) potassium nitrite 
C) methyl alcohol 
D) sulfuric acid 
A) carbon monoxide 
B) potassium nitrite 
C) methyl alcohol 
D) sulfuric acid

Question 7

Sodium fluoroacetate,also known as Compound 1080,is highly selective and poisonous only to snakes.

Accepted Answer

A) True 
 B)False

Question 8

What is the most effective way to dispose of organic wastes?

Accepted Answer

A) bury them in landfills 
B) incinerate them 
C) recycle them 
D) store them in special containers 
A) bury them in landfills 
B) incinerate them 
C) recycle them 
D) store them in special containers

Question 9

The cause of itai-itai,the "ouch-ouch" disease is

Accepted Answer

A) cadmium. 
B) mercury. 
C) lead. 
D) iridium. 
A) cadmium. 
B) mercury. 
C) lead. 
D) iridium.

Question 10

In the body,ethanol goes through the following steps.

Accepted Answer

A) ethanol → acetic acid → acetaldehyde → carbon dioxide and water 
B) ethanol → carbon dioxide and water → acetaldehyde → acetic acid 
C) ethanol → acetic acid → carbon dioxide and water → acetaldehyde 
D) ethanol → acetaldehyde → acetic acid → carbon dioxide and water 
A) ethanol → acetic acid → acetaldehyde → carbon dioxide and water 
B) ethanol → carbon dioxide and water → acetaldehyde → acetic acid 
C) ethanol → acetic acid → carbon dioxide and water → acetaldehyde 
D) ethanol → acetaldehyde → acetic acid → carbon dioxide and water

Question 11

Iron (as Fe²⁺)is

Accepted Answer

A) toxic at all concentrations. 
B) safe at all concentrations. 
C) toxic at high concentrations, essential at low concentration. 
D) toxic at high concentration, not known to be essential. 
A) toxic at all concentrations. 
B) safe at all concentrations. 
C) toxic at high concentrations, essential at low concentration. 
D) toxic at high concentration, not known to be essential.

Question 12

A teratogen is a cancer-causing substance.

Accepted Answer

A) True 
 B)False

Question 13

The average adult requires 45 to 50 mg of iron every day.

Accepted Answer

A) True 
 B)False

Question 14

Cyanide poisons by

Accepted Answer

A) blocking oxygen transport by hemoglobin. 
B) reacting with lung tissue. 
C) deactivating glucose oxidation enzymes. 
D) blocking cell protein synthesis. 
A) blocking oxygen transport by hemoglobin. 
B) reacting with lung tissue. 
C) deactivating glucose oxidation enzymes. 
D) blocking cell protein synthesis.

Question 15

The active ingredient in which of the following is a corrosive poison?

Accepted Answer

A) ammonia 
B) drain cleaner 
C) furniture wax 
D) laundry detergent 
A) ammonia 
B) drain cleaner 
C) furniture wax 
D) laundry detergent

Question 16

Acetylcholine is a chemical messenger that

Accepted Answer

A) activates the presynaptic membrane to make it permeable to ions that conduct an impulse. 
B) inactivates the presynaptic membrane to make it impermeable to certain ions that conduct an impulse. 
C) activates the postsynaptic nerve cell by fitting into a specific receptor and changing the permeability of the cell membrane to certain ions. 
D) inactivates the postsynaptic membrane to make it impermeable to certain ions that conduct an impulse. 
A) activates the presynaptic membrane to make it permeable to ions that conduct an impulse. 
B) inactivates the presynaptic membrane to make it impermeable to certain ions that conduct an impulse. 
C) activates the postsynaptic nerve cell by fitting into a specific receptor and changing the permeability of the cell membrane to certain ions. 
D) inactivates the postsynaptic membrane to make it impermeable to certain ions that conduct an impulse.

Question 17

Which of the following types of waste would be least hazardous?

Accepted Answer

A) corrosive waste 
B) flammable waste 
C) waste material from living plants 
D) reactive waste 
A) corrosive waste 
B) flammable waste 
C) waste material from living plants 
D) reactive waste

Question 18

P-450 enzymes,which can convert fat-soluble compounds into water-soluble compounds that can be excreted,are found in the

Accepted Answer

A) throat. 
B) liver. 
C) pancreas. 
D) blood. 
A) throat. 
B) liver. 
C) pancreas. 
D) blood.

Question 19

Which is a poison that acts by blocking the oxidation of glucose within cells?

Accepted Answer

A) nitrate 
B) cyanide 
C) nicotine 
D) sulfuric acid 
A) nitrate 
B) cyanide 
C) nicotine 
D) sulfuric acid

Question 20

The best way to dispose of a flammable waste is

Accepted Answer

A) process through a wastewater treatment plant. 
B) bury in a landfill. 
C) burn in an incinerator. 
D) store in a sealed barrel. 
A) process through a wastewater treatment plant. 
B) bury in a landfill. 
C) burn in an incinerator. 
D) store in a sealed barrel.

Exam 22: Poisons

The average fatal dose of hydrogen cyanide is

The simplest and least expensive method for testing for possible carcinogenic activity is

The Ames test assumes that most carcinogens will also be mutagens.

Which of the following is the most poisonous?

Nitrate acts as a poison by

Which is a corrosive poison?

Sodium fluoroacetate,also known as Compound 1080,is highly selective and poisonous only to snakes.

What is the most effective way to dispose of organic wastes?

The cause of itai-itai,the "ouch-ouch" disease is

In the body,ethanol goes through the following steps.

Iron (as Fe²⁺)is

A teratogen is a cancer-causing substance.

The average adult requires 45 to 50 mg of iron every day.

Cyanide poisons by

The active ingredient in which of the following is a corrosive poison?

Acetylcholine is a chemical messenger that

Which of the following types of waste would be least hazardous?

P-450 enzymes,which can convert fat-soluble compounds into water-soluble compounds that can be excreted,are found in the

Which is a poison that acts by blocking the oxidation of glucose within cells?

The best way to dispose of a flammable waste is

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