Most life on Earth depends on photosynthesis. The process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar).
Where does photosynthesis capture energy?
In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll. Chlorophyll absorbs certain portions of the visible spectrum and captures energy from sunlight.
Does photosynthesis consume energy?
During photosynthesis, photoautotrophs use energy from the sun, along with carbon dioxide and water, to form glucose and oxygen. In photosynthesis, solar energy is harvested and converted to chemical energy in the form of glucose using water and carbon dioxide.
Does photosynthesis release or take in energy?
In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. Oxygen is released as a byproduct. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process.
What pigment traps the energy in photosynthesis?
Most plants contain a special colored chemical or pigment called chlorophyll that is used in photosynthesis. Chlorophyll is what absorbs the sun’s energy and turns it into chemical energy.
Does photosynthesis produce ATP?
The ATP is produced during the light reaction of photosynthesis by photophosphorylation. ATPs are produced towards the stromal side of the thylakoid membrane. In the formation of one glucose molecule, 18 ATP and 12 NADPH molecules are utilised in the six turns of the Calvin cycle. …
What energy is needed by photosynthetic organisms?
Photosynthetic cells contain chlorophyll and other light-sensitive pigments that capture solar energy. In the presence of carbon dioxide, such cells are able to convert this solar energy into energy-rich organic molecules, such as glucose.
How much energy does photosynthesis produce?
Therefore, the estimated maximum energy efficiency of photosynthesis is the energy stored per mole of oxygen evolved, 117 kcal, divided by 450—that is, 117/450, or 26 percent. The actual percentage of solar energy stored by plants is much less than the maximum energy efficiency of photosynthesis.
How does a plant cell produce energy?
In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose. In mitochondria, through the process of cellular respiration breaks down sugar into energy that plant cells can use to live and grow.