WorksheetsBiochemical Cycles
Total questions: 15
Worksheet time: 15mins
How do living organisms return carbon to the atmosphere in the carbon cycle?
respiration and photosynthesis
decomposition and respiration
Organisms that play a role in the nitrogen cycle
only plants
only animals
only bacteria
plants, animals, & bacteria
Organism that breaks down dead plants & animals and releases nitrogen back into atmosphere
bacteria
plants
animals
producers
Which of the following statements is true of the phosphorus cycle?
Phosphorus enters the atmosphere as phosphates.
The phosphorus cycle utilizes the processes of erosion, and weathering.
Phosphates are used in carbohydrate and glucose storage.
The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.
What role do decomposers play in the phosphorous cycle?
absorb phosphorous
release phosphorous into atmosphere
return phosphorous into the soil
combustion
What are formed when water vapor condenses and come together?
Clouds
Mountains
Transpiration
Valleys
_____ brings phosphorous into our waterways. .
precipitation
runoff
transpiration
condensation
Which process in the water cycle involves the conversion of water vapor into liquid water?
Evaporation
Condensation
Precipitation
Transpiration
In the nitrogen cycle, which organisms are primarily responsible for nitrogen fixation?
Fungi
Bacteria
Plants
Animals
What is the main source of energy that drives the water cycle?
Wind
Sunlight
Geothermal heat
Tidal forces
Which of the following is a key component of the carbon cycle that removes carbon dioxide from the atmosphere?
Respiration
Photosynthesis
Combustion
Decomposition
In the phosphorus cycle, phosphorus is primarily found in which part of the ecosystem?
Atmosphere
Soil and rocks
Oceans
Living organisms
Which process in the carbon cycle is responsible for the release of carbon dioxide into the atmosphere from burning fossil fuels?
Photosynthesis
Respiration
Combustion
Decomposition
What role do plants play in the nitrogen cycle?
Fix nitrogen from the atmosphere
Convert nitrates to nitrogen gas
Absorb nitrates from the soil
Release nitrogen gas into the atmosphere
Which of the following processes is not part of the nitrogen cycle?
Nitrification
Denitrification
Ammonification
Photosynthesis
