Question 1

How would Si depletion in the photic zone of the open ocean affect the biological pump and the C cycle?

Accepted Answer

Si is required for diatoms to fix carbon

Question 2

Greenhouse gases

Accepted Answer

A)  such as CO₂, CH₄, and N₂O trap infrared radiation and heat the Earth. 
B)  such as CO₂ increase plant and animal growth, resulting in more heat production on Earth. 
C)  such as CO₂ and O₃ (ozone) interact with UV light and heat the Earth. 
D)  such as CO₂, CH₄, and N₂O destroy O₃ (ozone) and allow more UV light to enter the atmosphere, thus increasing the temperature of the Earth's surface. 
A)  such as CO₂, CH₄, and N₂O trap infrared radiation and heat the Earth. 
B)  such as CO₂ increase plant and animal growth, resulting in more heat production on Earth. 
C)  such as CO₂ and O₃ (ozone) interact with UV light and heat the Earth. 
D)  such as CO₂, CH₄, and N₂O destroy O₃ (ozone) and allow more UV light to enter the atmosphere, thus increasing the temperature of the Earth's surface.

Question 3

The burning of fossil fuels produces significant amounts of

Accepted Answer

A)  sulfate. 
B)  sulfite. 
C)  sulfonate. 
D)  sulfur dioxide. 
A)  sulfate. 
B)  sulfite. 
C)  sulfonate. 
D)  sulfur dioxide.

Question 4

Nitrous oxide (N₂O)is a

Accepted Answer

A)  product of denitrification. 
B)  product of nitrification. 
C)  potent greenhouse gas. 
D)  potent greenhouse gas that is a product of denitrification. 
A)  product of denitrification. 
B)  product of nitrification. 
C)  potent greenhouse gas. 
D)  potent greenhouse gas that is a product of denitrification.

Question 5

Increasing atmospheric carbon dioxide is

Accepted Answer

A)  increasing sedimentation of C, Ca, and Si. 
B)  increasing the effect of the biological pump. 
C)  fueling increased primary production in ocean waters. 
D)  acidifying the ocean and decreasing the rate of formation of calcareous shells. 
A)  increasing sedimentation of C, Ca, and Si. 
B)  increasing the effect of the biological pump. 
C)  fueling increased primary production in ocean waters. 
D)  acidifying the ocean and decreasing the rate of formation of calcareous shells.

How would Si depletion in the photic zone of the open ocean affect the biological pump and the C cycle?

Greenhouse gases

The burning of fossil fuels produces significant amounts of

Nitrous oxide (N₂O)is a

Increasing atmospheric carbon dioxide is

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

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Exam 20: Nutrient Cycles

How would Si depletion in the photic zone of the open ocean affect the biological pump and the C cycle?

Greenhouse gases

The burning of fossil fuels produces significant amounts of

Nitrous oxide (N₂O)is a

Increasing atmospheric carbon dioxide is

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

Filters