Question 1

Trichloroethylene (TCE)is toxic to humans because it

Accepted Answer

A) depletes nitrogen from soils. 
B) is carcinogenic. 
C) contains heavy metals. 
D) prevents CO2 production by plants. 
E) causes a decrease in the yield of crop plants. 
A) depletes nitrogen from soils. 
B) is carcinogenic. 
C) contains heavy metals. 
D) prevents CO2 production by plants. 
E) causes a decrease in the yield of crop plants.

Question 2

Inserting a cloned gene for a plasma membrane transporter into crop plants could lead to

Accepted Answer

A) the ability of a plant to produce its own micronutrients. 
B) extra uptake of minerals that would fortify the crop for human consumption. 
C) the evolution of nodule-formation on the crop plant. 
D) elevated CO2 levels in the atmosphere. 
E) plants taking up enough minerals that they no longer need to photosynthesize. 
A) the ability of a plant to produce its own micronutrients. 
B) extra uptake of minerals that would fortify the crop for human consumption. 
C) the evolution of nodule-formation on the crop plant. 
D) elevated CO2 levels in the atmosphere. 
E) plants taking up enough minerals that they no longer need to photosynthesize.

Question 3

When legumes with nitrogen-fixation nodules are given chemical fertilizers with high nitrogen concentrations,they abandon support of the nodules and end the symbiosis.Why?

Accepted Answer

A) The mineral nutrients inhibit nitrogenase activity. 
B) Nitrogen gas is no longer available in the soil. 
C) The plant can conserve valuable energy sources by terminating the symbiotic relationship. 
D) The dissolved chemical nutrients are toxic to Rhizobium bacteria. 
E) Dissolved nitrogen uncurls the root hairs,releasing the nodule. 
A) The mineral nutrients inhibit nitrogenase activity. 
B) Nitrogen gas is no longer available in the soil. 
C) The plant can conserve valuable energy sources by terminating the symbiotic relationship. 
D) The dissolved chemical nutrients are toxic to Rhizobium bacteria. 
E) Dissolved nitrogen uncurls the root hairs,releasing the nodule.

Question 4

In lab,you are studying the long term effects of elevated carbon dioxide levels on photosynthesis in C3 and C4 plants.The C3 and C4 plants are growing in separate closed chambers.Both chambers are constantly given elevated but equal amounts of carbon dioixde.Which of the following are likely results of this experiment? Check all that apply.

Accepted Answer

A) There would be a decrease in O2 levels in both chambers. 
B) There would be an increase in O2 levels in both containers. 
C) Both the C3 and the C4 plants would show equal gains in biomass. 
D) The C4 plants would gain more biomass relative to the C3 plants. 
E) The C3 plants would gain more biomass relative to the C4 plants. 
A) There would be a decrease in O2 levels in both chambers. 
B) There would be an increase in O2 levels in both containers. 
C) Both the C3 and the C4 plants would show equal gains in biomass. 
D) The C4 plants would gain more biomass relative to the C3 plants. 
E) The C3 plants would gain more biomass relative to the C4 plants.

Question 5

As global temperatures increase,evidence suggests that ribulose 1,5-biphosphate carboxylase/oxygenase (rubisco)is likely to denature and photosynthesis rates will decrease.

Accepted Answer

A) True 
 B)False

Question 6

The effects of elevated atmospheric CO2 concentrations

Accepted Answer

A) have the potential to alter the nutritional status of plants. 
B) have the potential to allow herbivores to eat less plant matter. 
C) have no effect on nutrient levels found in plant leaves. 
D) allow the plant to use O2 more efficiently in photosynthesis. 
E) cause an increase in rubisco production. 
A) have the potential to alter the nutritional status of plants. 
B) have the potential to allow herbivores to eat less plant matter. 
C) have no effect on nutrient levels found in plant leaves. 
D) allow the plant to use O2 more efficiently in photosynthesis. 
E) cause an increase in rubisco production.

Question 7

A deficiency of ammonia would inhibit the production of which of the following molecules?

Accepted Answer

A) proline and alanine 
B) starch 
C) short chain fatty acids 
D) glucose and fructose 
E) long chain fatty acids 
A) proline and alanine 
B) starch 
C) short chain fatty acids 
D) glucose and fructose 
E) long chain fatty acids

Exam 37: Plant Nutrition and Soils

Trichloroethylene (TCE)is toxic to humans because it

Inserting a cloned gene for a plasma membrane transporter into crop plants could lead to

When legumes with nitrogen-fixation nodules are given chemical fertilizers with high nitrogen concentrations,they abandon support of the nodules and end the symbiosis.Why?

As global temperatures increase,evidence suggests that ribulose 1,5-biphosphate carboxylase/oxygenase (rubisco)is likely to denature and photosynthesis rates will decrease.

The effects of elevated atmospheric CO2 concentrations

A deficiency of ammonia would inhibit the production of which of the following molecules?

The Science of Biology

The Nature of Molecules and the Properties of Water

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes, mapping, and the Meiosisinheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics,phylogenies,and Comparative Biology

Genome Evolution

The Origin and Diversity of Life

Viruses

Prokaryotes

Protists

Seedless Plants

Seed Plants

Fungi

Animal Diversity and the Evolution of Body Plans

Protostomes

Deuterostomes

Plant Form

Transport in Plants

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

The Nervous System

Sensory Systems

The Endocrine System

The Musculoskeletal System

The Digestive System

The Respiratory System

The Circulatory System

Osmotic Regulation and the Urinary System

The Immune System

The Reproductive System

Animal Development

Behavioral Biology

Ecology of Individuals and Populations

Community Ecology

Dynamics of Ecosystems

The Biosphere and Human Impacts

Conservation Biology

Filters

The effects of elevated atmospheric CO₂ concentrations