Photosynthesis

Jacque Alvidrez

Introduction

Photosynthesis and respiration go hand in hand. The result of photosynthesis is glucose, which is stored as chemical energy in the plant cells. Producers are vitally important to all life on earth. They produce food for themselves and to feed the consumers that cannot make their own food for themselves. Plants and other photoautotrophs generate carbohydrates and oxygen from carbon dioxide, water, and light energy in chloroplasts. It is the only biological process that captures energy from sunlight.

What is Photosynthesis?

The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. It is the driving force behind most of the life on earth. Photosynthesis occurs in plants, algae, and many species of bacteria, but not archaea.


Energy from sunlight, water absorbed by the roots, and carbon dioxide from the atmosphere produce glucose and oxygen by photosynthesis. Photosynthesis is the process by which plants and other things make food. It is a chemical process that uses sunlight to turn carbon dioxide into sugars the cell can use as energy.

How does Photosynthesis Work?

Photosynthesis can happen in plants because they have chlorophyll. Chlorophyll is the pigment that makes plants green. Chlorophyll captures the Sun's energy and uses it to make sugars out of carbon dioxide from the air and water. The sugars fuel a plant's roots, stems, and leaves so the plant can grow.

3 Main Parts of Photosynthesis

Light dependent (Absorption)- chlorophyll and carotenoids absorb water is split into oxygen and hydrogen

ETC- movement of Hydrogen across the thylakoids, makes energy to create ATP and NADPH

Light independent (Calvin cycle)- in the stroma using electrons carbon enters as CO2 and leaves as sugar

Chloroplasts

An organelle unique to plant cells that contains chlorophyll (which is what makes plants green) and is responsible for enabling photosynthesis to occur, so that plants can convert sunlight into chemical energy.