Question 1

Nitrogenase catalyzes the reactions that produce ammonia from atmospheric nitrogen.

Accepted Answer

Nitrogenase is an enzyme complex that catalyzes the reduction of atmospheric nitrogen (N₂) to ammonia (NH₃), which can be used by plants as a source of nitrogen. Therefore, the statement is true.

Question 2

Use the following terms to complete the given statements.
transgenic
IPM
sustainable agriculture
organic farming
genetic engineering
agrichemical
pesticide resistant
shallow-rooted
-__________ has decreased energy costs but increased labor costs.

Accepted Answer

The answer of Use the following terms to complete the...

Question 3

Use the following terms to complete the given statements.
transgenic
IPM
sustainable agriculture
organic farming
genetic engineering
agrichemical
pesticide resistant
shallow-rooted
-The Flavr Savr tomato is an early example of ______crop.

Accepted Answer

The answer of Use the following terms to complete the...

Question 4

Reactions involving nitrogenase and the Haber process share which of the following?

Accepted Answer

Both nitrogenase reactions in biological systems and the Haber process in industrial settings produce ammonia (NH3) as their product.

Question 5

Nitrogenase is found in the leaves and stems of alfalfa, soybeans, and legumes.

Accepted Answer

Nitrogenase is actually found in specialized cells within the roots of these plants, called nodules.

Question 6

Carbon is classified as a mineral nutrient while nitrogen is classified as a nonmineral secondary nutrient.

Accepted Answer

Carbon is not classified as a mineral nutrient, it is actually considered a nonmineral element. Nitrogen, on the other hand, is classified as a mineral nutrient as it is required for plant growth and development in larger quantities than other nonmineral elements such as carbon.

Question 7

Use the following terms to complete the given statements.
transgenic
IPM
sustainable agriculture
organic farming
genetic engineering
agrichemical
pesticide resistant
shallow-rooted
-Crop rotation would be an example of ___________________.

Accepted Answer

The answer of Use the following terms to complete the...

Question 8

Use the following terms to complete the given statements.
transgenic
IPM
sustainable agriculture
organic farming
genetic engineering
agrichemical
pesticide resistant
shallow-rooted
-_____________can produce new breeds of plants ten times faster than natural breeding methods.

Accepted Answer

The answer of Use the following terms to complete the...

Question 9

The following substance is a pesticide and based on its structure would be classified as a organophosphate derivative.

Accepted Answer

The substance is classified as an organophosphate derivative based on its structure, which is commonly used as a pesticide.

Question 10

The following substance is a pesticide and based on its structure would be classified as a persistent pesticide.

Accepted Answer

The answer of The following substance is a pesticide and...

Question 11

Use the following terms to complete the given statements.
transgenic
IPM
sustainable agriculture
organic farming
genetic engineering
agrichemical
pesticide resistant
shallow-rooted
-______is a broad approach to limiting the use of pesticides.

Accepted Answer

The answer of Use the following terms to complete the...

Question 12

DDT has an LD₅₀ of 100 mg/kg and malathion has an LD₅₀ of 1000 mg/kg. This means that malathion has a higher toxicity.

Accepted Answer

The LD₅₀ of malathion is 10 times that of DDT, indicating lower toxicity.

Question 13

The air in soil tends to have more carbon dioxide and less oxygen that the air we breathe.

Accepted Answer

Soil respiration releases carbon dioxide from the soil and uses up oxygen, leading to a difference in gas concentrations compared to the air we breathe.

Question 14

Chlorosis (evidenced by green plants turning yellow) results from too much iron in the soil.

Accepted Answer

Chlorosis actually results from a lack of iron in the soil, which affects the ability of plants to produce chlorophyll.

Quiz 19: Feeding the World

Nitrogenase catalyzes the reactions that produce ammonia from atmospheric nitrogen.

Use the following terms to complete the given statements. transgenic IPM sustainable agriculture organic farming genetic engineering agrichemical pesticide resistant shallow-rooted -__________ has decreased energy costs but increased labor costs.

Use the following terms to complete the given statements. transgenic IPM sustainable agriculture organic farming genetic engineering agrichemical pesticide resistant shallow-rooted -The Flavr Savr tomato is an early example of ______crop.

Reactions involving nitrogenase and the Haber process share which of the following?

Nitrogenase is found in the leaves and stems of alfalfa, soybeans, and legumes.

Carbon is classified as a mineral nutrient while nitrogen is classified as a nonmineral secondary nutrient.

Use the following terms to complete the given statements. transgenic IPM sustainable agriculture organic farming genetic engineering agrichemical pesticide resistant shallow-rooted -Crop rotation would be an example of ___________________.

Use the following terms to complete the given statements. transgenic IPM sustainable agriculture organic farming genetic engineering agrichemical pesticide resistant shallow-rooted -_____________can produce new breeds of plants ten times faster than natural breeding methods.

The following substance is a pesticide and based on its structure would be classified as a organophosphate derivative.

The following substance is a pesticide and based on its structure would be classified as a persistent pesticide.

Use the following terms to complete the given statements. transgenic IPM sustainable agriculture organic farming genetic engineering agrichemical pesticide resistant shallow-rooted -______is a broad approach to limiting the use of pesticides.

DDT has an LD50 of 100 mg/kg and malathion has an LD50 of 1000 mg/kg. This means that malathion has a higher toxicity.

The air in soil tends to have more carbon dioxide and less oxygen that the air we breathe.

Chlorosis (evidenced by green plants turning yellow) results from too much iron in the soil.

DDT has an LD₅₀ of 100 mg/kg and malathion has an LD₅₀ of 1000 mg/kg. This means that malathion has a higher toxicity.