Biogeochemical Cycles Quiz

Process through which which carbon can enter the atmosphere as CO2 during the carbon cycle

• Consumption

• Cellular respiration

• Photosynthesis

• Dissolving in water

Nitrogen fixing bacteria enable which of the following

• Decreased plant growth

• Protein production in plants

• Carbohydrate production in plants

• Increased energy in plants

Nitrogen accounts nearly for approximately 78% of the air we breathe. Still nitrogen in the most limiting nutrient for plant growth because

• High energy is required to break nitrogen triple bond

• Nitrogen has a high specific heat capacity

• Nitrogen is only acquired during volcanic eruption

• N2 cannot be directly utilized by plants

Which of the following macromolecule(s) require Nitrogen?

• Lipids (Fats)
  

• Nucleic Acid (DNA)

• Carbohydrates

• Proteins and Nucleic Acids (DNA)

Nitrogen fixation is the process of

• Formation usable nitrogen from atmospheric nitrogen by nitrogen-fixing bacteria

• Formation of ammonia from amino acids by decomposers.

• Formation of ammonia from nitrates by nitrogen fixers.

• Formation of ammonia from nitrates by decomposers.

Which of the following processes sequesters Carbon?

• Combustion

• Photosynthesis

• Decay/Decomposition

• Cellular Respiration