VCE Biology Unit 1 Area of Study (AOS) 1 Practice Test

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards

From $12.50Unlock all

Session length

1 / 20

How do photosynthesis and respiration together support energy flow in organisms?

Respiration stores energy; photosynthesis releases energy for cellular work.

Energy from sunlight is captured by photosynthesis and stored as chemical energy in glucose. When organisms respire, that glucose is broken down with oxygen to release the stored energy, producing ATP that fuels cellular work. In short, photosynthesis acts as the energy storage step, while respiration releases that energy in a form cells can use. The cycle continues as the byproducts of respiration (carbon dioxide and water) can be reused by photosynthetic organisms to make more glucose. This interdependence keeps energy flowing through organisms.

Photosynthesis stores energy; respiration releases energy.

Both processes release energy for cellular work.

They occur in the same organelle.