Photosynthesis is
an endothermic reaction
. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.
Is photosynthesis is a chemical reaction?
Photosynthesis is a series of
chemical reactions
that convert carbon dioxide and water into glucose (sugar) and oxygen in the presence of sunlight.
Is photosynthesis a combustion reaction?
� Combustion is
a chain reaction chemically similar to photosynthesis in reverse
. Photosynthesis requires a large amount of heat which is furnished by the sun. The Combustion process releases this heat. … Heat is necessary to begin the combustion process.
What happens during the chemical reaction of photosynthesis?
Photosynthesis reactions are naturally occurring processes that take place in all green plants and most algae. During this process the plant uses
light energy, carbon dioxide, and water to make food and then releases oxygen which all living organisms require to the atmosphere
.
What are the two types of reaction in photosynthesis?
Photosynthesis takes place in two sequential stages: The
light-dependent reactions; The light-independent reactions
, or Calvin Cycle.
What is photosynthesis formula?
The process of photosynthesis is commonly written as:
6CO
2
+ 6H
2
O → C
6
H
12
O
6
+ 6O
2
. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
Is carbon a cycle?
Carbon is the chemical backbone of all life on Earth. … It's also found in our atmosphere in the form of carbon dioxide or CO2. The carbon cycle
is nature's way of reusing carbon atoms
, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again.
Why photosynthesis is not reversible?
The reverse reaction of photosynthesis does not take place because
the activation energy is too high in the absence of a suitable enzyme
.
What occurs in photosynthesis?
During the process of photosynthesis, cells use
carbon dioxide and energy from the Sun to make sugar molecules and oxygen
. … Then, via respiration processes, cells use oxygen and glucose to synthesize energy-rich carrier molecules, such as ATP, and carbon dioxide is produced as a waste product.
Is a rainbow a chemical reaction?
A rainbow
is not a chemical reaction
, but is an optical illusion due to sunlight passing through water droplets in the atmosphere.
Does photosynthesis produce ATP?
The Light Reactions of Photosynthesis. Light is absorbed and the energy is used to drive electrons from water to generate NADPH and to drive protons across a membrane. These protons
return through ATP synthase
to make ATP.
What are the 2 types of reactions?
- Synthesis reactions. Two or more reactants combine to make 1 new product. …
- Decomposition reactions. A single reactant breaks down to form 2 or more products. …
- Single-replacement reactions. …
- Double-replacement reactions. …
- Combustion reactions.
What three factors affect photosynthesis?
- Light intensity. Without enough light, a plant cannot photosynthesise very quickly – even if there is plenty of water and carbon dioxide. …
- Carbon dioxide concentration. …
- Temperature.
What is photosynthesis with example?
An example of photosynthesis is
how plants convert sugar and energy from water, air and sunlight into energy to grow
. … The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and a source of hydrogen (usually water), using light as an energy source.
What is the importance photosynthesis?
The primary function of photosynthesis is
to convert solar energy into chemical energy and then store that chemical energy for future use
. For the most part, the planet's living systems are powered by this process.
What is photosynthesis for kids?
Photosynthesis is the process in which green plants
use sunlight
to make their own food. … Green plants use this light energy to change water and carbon dioxide into oxygen and nutrients called sugars. The plants use some of the sugars and store the rest. The oxygen is released into the air.
