Biogeochemical Cycles M/C

What is the main focus of biogeochemical cycles?

• Movement of nutrients between living and nonliving factors

• Movement of nutrients within living organisms

• Movement of nutrients within nonliving factors

• Movement of nutrients between living organisms

What does the term 'biogeochemical' refer to?

• Biosphere and geological components

• Geological components and chemical elements

• Biosphere and chemical elements

• Biosphere, geological components, and chemical elements

Which of the following is not a biogeochemical cycle important to living organisms?

• Hydrogen cycle

• Oxygen cycle

• Carbon cycle

• Water cycle

What is the process by which carbon enters the biosphere?

• Transpiration

• Decomposition

• Photosynthesis

• Cellular respiration

What is the most abundant gas in the atmosphere?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

What is the source of phosphorus in the phosphorus cycle?

• Water bodies

• Soil

• Atmosphere

• Rock

What is the main component of the sulfur cycle?

• Hydrogen

• Oxygen

• Protein

• Carbon dioxide

Which of the following is not a source of oxygen in the oxygen cycle?

• Photosynthesis and respiration

• Volcanic eruptions

• Gas exchange at ocean surfaces

• Decomposition

What is the main role of nitrogen in living organisms?

• Protein synthesis

• Photosynthesis

• Energy production

• Cellular respiration

What is the form in which phosphorus is taken up by plant roots?

• Phosphate

• Carbonate

• Sulfate

• Nitrate