Biogeochemical Cycles Video Quiz

What are the six most common elements found in organic molecules?

• Carbon, nitrogen, hydrogen, oxygen, potassium, and iron

• Carbon, nitrogen, hydrogen, oxygen, phosphorus, and sulfur

• Carbon, nitrogen, hydrogen, oxygen, calcium, and magnesium

• Carbon, nitrogen, hydrogen, oxygen, sodium, and chlorine

What is a biogeochemical cycle?

• The movement of energy between living organisms only

• The process of cellular respiration in plants

• The movement of elements or compounds between biotic and abiotic factors

• The breakdown of rocks through weathering only

Which mnemonic device is used to remember the main elements in biogeochemical cycles?

• CHOPS

• CHNOPS

• CNHOPS
  

• CHONPS

Why is carbon considered important to life?

• It is only found in plant cells

• It helps in waste elimination

• It is present in all organic molecules in the body

• It is only necessary for respiration

What is the primary role of hydrogen in living organisms?

• It is only used in photosynthesis

• It is present in body fluids and helps eliminate toxins

• It only functions in cellular respiration

• It is exclusively used for energy production

Which process requires oxygen for energy production in cells?

• Photosynthesis

• Osmosis

• Diffusion

• Cellular respiration

What is the main function of phosphorus in organisms?

• It regulates body temperature

• It is a component of DNA and RNA

• It only functions in cellular respiration

• It maintains acid-base balance

How is sulfur released into the atmosphere?

• Through plant respiration

• Through photosynthesis

• Through burning of fossil fuels

• Through water evaporation

Which of the following best describes the importance of water in living organisms?

• It only helps in temperature regulation

• It is needed for respiration and metabolism regulation

• It only transports minerals

• It is exclusively used for photosynthesis

What type of factors are non-living components in biogeochemical cycles called?

• Biotic factors

• Chemical factors

• Abiotic factors

• Geological factors