Question

which gas is released during cellular respiration? *
oxygen
nitrogen
carbon dioxide
hydrogen

cellular respiration is best described as: *
a process that stores energy
a process that releases energy from food molecules
a process that produces glucose
a process that absorbs sunlight

Explanation:

Cellular respiration is a metabolic process. In this process, glucose and oxygen are used to produce energy (in the form of ATP), carbon dioxide, and water. So, carbon dioxide is released. Also, cellular respiration breaks down food molecules (like glucose) to release energy, not store it. Photosynthesis is the process that produces glucose and absorbs sunlight.

Answer:

For the first question: Carbon dioxide.
For the second question: A process that releases energy from food molecules.