Photosynthesis and Cellular Respiration

How do organisms (living things) move carbon through the carbon cycle?

• Respiration only

• Decomposition only

• Photosynthesis, respiration, and decomposition

• Decomposition and sedimentation

• Respiration, decomposition, sedimentation, and photosynthesis

Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?

• The carbon cycle

• The water cycle

• The nitrogen cycle

• The phosphorous cycle

How does the human body return carbon to the atmosphere in the carbon cycle?

• Waste products

• Photosynthesis

• Cellular respiration

• Formation of glucose

Which of the following removes carbon from the atmosphere?

• Combustion

• Respiration

• Photosynthesis

• Death

The diagram above shows the exchange of carbon on Earth. Which biological processes are represented at X and Y in the diagram?

• X: decomposition; Y: fermentation

• X: cellular respiration Y: decomposition

• X: photosynthesis; Y: cellular respiration

• X: fermentation; Y: photosynthesis

What term describes a process in which plants absorb carbon from the atmosphere?

• evaporation

• photosynthesis

• respiration

• transpiration

Which process is primarily responsible for converting solar energy into chemical energy in plants?

• A) Cellular respiration

• B) Photosynthesis

• C) Fermentation

• D) Glycolysis

What is the main byproduct of photosynthesis that is essential for human survival?

• A) Carbon dioxide

• B) Oxygen

• C) Nitrogen

• D) Methane

In which organelle does photosynthesis primarily occur?

• A) Mitochondria

• B) Chloroplast

• C) Nucleus

• D) Ribosome

Which of the following processes releases energy by breaking down glucose in the presence of oxygen?

• A) Photosynthesis

• B) Cellular respiration

• C) Fermentation

• D) Transpiration