Question

  

Energy for Metabolic Processes

Energy for Metabolic Processes

Photosynthesis uses stored chemical energy, carbon dioxide, and water to produce glucose. Glucose is a sugar that is necessary to create energy in plants and animals. Plants create their own glucose, while animals must consume food to get glucose.

To start the energy conversion process, glucose is broken down into molecules called pyruvate. Pyruvate is used to make energy, in the form of adenosine triphosphate (ATP), during cellular respiration. ATP is used to power metabolic processes in both plants and animals. The diagram shows the cycle of matter and energy between photosynthesis and cellular respiration to produce energy.



Multiple Choice Question

How do plants obtain the chemical energy that is stored and later used during photosynthesis?

A. 

light energy from the Sun

B. 

chemical energy from oxygen

C. 

energy released from glucose

D. 

energy released from pyruvate

Answer 1

The correct answer is:

A. light energy from the Sun

Plants obtain chemical energy through the process of photosynthesis, which converts light energy from the Sun into chemical energy stored in glucose.