Question 1

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 acidsF) C) and D)
G) D) and E)

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.F) A) and B)
G) A) and C)

Question 3

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.F) B) and C)
G) A) and E)

Question 4

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 5

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.F) B) and D)
G) C) and D)

Question 6

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.F) A) and B)
G) A) and C)

Question 7

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.F) A) and B)
G) D) and E)

Exam 37: Plant Nutrition and Soils

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?

Correct Answer
verified

The effects of elevated atmospheric CO₂ concentrations

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Trichloroethylene (TCE) is toxic to humans because it

Correct Answer
verified

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

Correct Answer
verified

Exam 37: Plant Nutrition and Soils

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?

Correct AnswerverifiedShow Answer

The effects of elevated atmospheric CO2 concentrations

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Trichloroethylene (TCE) is toxic to humans because it

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

The effects of elevated atmospheric CO₂ concentrations

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified