Question 1

Which of the following types of compounds are narrow-spectrum insecticides?

Accepted Answer

A) carbamates 
B) chlorinated hydrocarbons 
C) organic phosphorus compounds 
D) None of the above is a narrow-spectrum insecticide. 
A) carbamates 
B) chlorinated hydrocarbons 
C) organic phosphorus compounds 
D) None of the above is a narrow-spectrum insecticide. A

Question 2

Herbicides are chemicals that are used to kill weeds.

Accepted Answer

A) True 
 B)False  True

Question 3

Plants incorporate phosphorus into

Accepted Answer

A) amylopectin. 
B) RNA. 
C) bacteria. 
D) phosphoric acid. 
A) amylopectin. 
B) RNA. 
C) bacteria. 
D) phosphoric acid. B

Question 4

A very successful approach to limiting insects is to breed insect-resistant plants.

Accepted Answer

A) True 
 B)False

Question 5

Over 10% of the earth's population is seriously malnourished.

Accepted Answer

A) True 
 B)False

Question 6

Atrazine disrupts normal estrogen function and has been linked to sexual abnormalities in frogs.

Accepted Answer

A) True 
 B)False

Question 7

The new spinosad pesticides utilize an active ingredient which is derived from naturally occurring bacteria and is harmful to the nervous system of targeted insects.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following does NOT involve using a biological insect control method?

Accepted Answer

A) releasing sterile males into the wild 
B) treating insects with juvenile hormones 
C) using organic phosphorus compounds 
D) attracting insects with pheromones 
A) releasing sterile males into the wild 
B) treating insects with juvenile hormones 
C) using organic phosphorus compounds 
D) attracting insects with pheromones

Question 9

Dioxin is a chemical contaminant produced during the manufacture of

Accepted Answer

A) 2,4,5 -T. 
B) aldicarb. 
C) atrazine. 
D) diazinon. 
A) 2,4,5 -T. 
B) aldicarb. 
C) atrazine. 
D) diazinon.

Question 10

In 1957,Clear Lake in California was sprayed with DDT such that the water contained 0.02 ppm of DDT.After a period of time,large fish in the lake were found to have DDT levels as high as 2000 ppm.Which of the following animals would be predicted to have DDT levels > 2000 ppm?

Accepted Answer

A) algae 
B) hummingbirds 
C) small fish 
D) eagles 
A) algae 
B) hummingbirds 
C) small fish 
D) eagles

Question 11

An early source of phosphorus for agriculture was

Accepted Answer

A) urea. 
B) bird droppings. 
C) superphosphate. 
D) all of the above 
A) urea. 
B) bird droppings. 
C) superphosphate. 
D) all of the above

Question 12

As the LD₅₀ of a substance decreases,the toxicity of the substance ________.

Accepted Answer

The answer of As the LD₅₀ of a substance decreases,the...

Question 13

More nitrogen is fixed by lightning than by bacteria.

Accepted Answer

A) True 
 B)False

Question 14

Uptake of potassium ions from the soil by a plant requires the loss of a hydronium ion from the plant.The soil,therefore,becomes

Accepted Answer

A) more acidic. 
B) more basic. 
C) neutral. 
D) nitrogen rich. 
A) more acidic. 
B) more basic. 
C) neutral. 
D) nitrogen rich.

Question 15

As the LD₅₀ of a substance decreases,the toxicity of the substance decreases.

Accepted Answer

A) True 
 B)False

Question 16

All of the following are natural organic herbicides EXCEPT

Accepted Answer

A) acetic acid. 
B) gluten meal. 
C) bone meal. 
D) eugenol, an ingredient in oil of cloves. 
A) acetic acid. 
B) gluten meal. 
C) bone meal. 
D) eugenol, an ingredient in oil of cloves.

Question 17

Which of the following would be a characteristic of a green chemistry pesticide?

Accepted Answer

A) biodegradable 
B) minimal effect on the environment 
C) toxic only to a specific pest 
D) all of the above 
A) biodegradable 
B) minimal effect on the environment 
C) toxic only to a specific pest 
D) all of the above

Question 18

An early source of phosphorus for agriculture was ________.

Accepted Answer

The answer of An early source of phosphorus for agriculture...

Question 19

Which is classified as a narrow spectrum pesticide?

Accepted Answer

A) DDT 
B) an organophosphorus pesticide 
C) a carbamate 
D) lead arsenate 
A) DDT 
B) an organophosphorus pesticide 
C) a carbamate 
D) lead arsenate

Question 20

Which of the following is an herbicide?

Accepted Answer

A) 2,4-D 
B) parathion 
C) carbaryl 
D) diazinon 
A) 2,4-D 
B) parathion 
C) carbaryl 
D) diazinon

Exam 20: Chemistry Down on the Farm

Which of the following types of compounds are narrow-spectrum insecticides?

Herbicides are chemicals that are used to kill weeds.

Plants incorporate phosphorus into

A very successful approach to limiting insects is to breed insect-resistant plants.

Over 10% of the earth's population is seriously malnourished.

Atrazine disrupts normal estrogen function and has been linked to sexual abnormalities in frogs.

The new spinosad pesticides utilize an active ingredient which is derived from naturally occurring bacteria and is harmful to the nervous system of targeted insects.

Which of the following does NOT involve using a biological insect control method?

Dioxin is a chemical contaminant produced during the manufacture of

In 1957,Clear Lake in California was sprayed with DDT such that the water contained 0.02 ppm of DDT.After a period of time,large fish in the lake were found to have DDT levels as high as 2000 ppm.Which of the following animals would be predicted to have DDT levels > 2000 ppm?

An early source of phosphorus for agriculture was

As the LD₅₀ of a substance decreases,the toxicity of the substance ________.

More nitrogen is fixed by lightning than by bacteria.

Uptake of potassium ions from the soil by a plant requires the loss of a hydronium ion from the plant.The soil,therefore,becomes

As the LD₅₀ of a substance decreases,the toxicity of the substance decreases.

All of the following are natural organic herbicides EXCEPT

Which of the following would be a characteristic of a green chemistry pesticide?

An early source of phosphorus for agriculture was ________.

Which is classified as a narrow spectrum pesticide?

Which of the following is an herbicide?

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