NAME : WAHYUNI NIM : F05112025 CLASS A (PGMIPA U) PHOTOSYNTHESIS : LIGHT REACTION , DARK REACTION (CALVIN CYCLE) AND C3 PLANT, C4 PLANT, AND CAM PLANT In plants, plants need water, carbon dioxide, and energy. It is in the need to perform a chemical process which would produce glucose and oxygen to build up a block at the plant, which is called photosynthesis. photosynthesis can also be interpreted as the formation of carbohydrates from carbon dioxide (CO 2 ) and water (H 2 O) with the help of sunlight. Able to perform photosynthesis because plants has cells that contain chlorophyll (green substance). In discovery photosynthesis, sunlight energy absorbed by chlorophyll and converted to chemical energy stored in the form of carbohydrates or other organic compounds. The reaction proceeds as follows: H 2 O + CO 2 sunlight C 6 H 12 O 6 +O 2 klorofil Light Reaction
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Photosynthesis Light Reaction , Dark Reaction (Calvin Cycle) and c3 Plant, c4 Plant, And Cam Plant
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NAME : WAHYUNI
NIM : F05112025
CLASS A (PGMIPA U)
PHOTOSYNTHESIS : LIGHT REACTION , DARK REACTION (CALVIN
CYCLE) AND C3 PLANT, C4 PLANT, AND CAM PLANT
In plants, plants need water, carbon dioxide, and energy. It is in the need to
perform a chemical process which would produce glucose and oxygen to build up
a block at the plant, which is called photosynthesis. photosynthesis can also be
interpreted as the formation of carbohydrates from carbon dioxide (CO2) and
water (H2O) with the help of sunlight. Able to perform photosynthesis because
plants has cells that contain chlorophyll (green substance). In discovery
photosynthesis, sunlight energy absorbed by chlorophyll and converted to
chemical energy stored in the form of carbohydrates or other organic compounds.
The reaction proceeds as follows:
H2O + CO2 sunlight C6H12O6 +O2
klorofil
Light Reaction
Sunlight has waves and smallest particle or photons. These photons has
wavelengths, spectrum has wavelength in the the spectrum called photosynthetic
electromagnetic . Organism only use a little bit of electronic magnetic. Who
wavelengths is called visible light. which is about 400 nm-740nm (blue-red).
photosynthetic pigment contained aided by the wavelength which is derived from
the visible light range. color pigment comes from the wavelengths are reflected by
light. plants usually shows its leaf color is green, it is in because green plants so
reflected leaf colors usually appear green. Wavelengths while red and blue are
absorbed in the form of energy used for photosynthesis.
Below is a description of the light reaction:
sumber : www. wikipedia.id
The chemical reaction for photosynthesis occur in the chloroplast.
photosynthesis occurs in two processes which are the light reactions, which need
light and involving breakdown of water and release of oxygen, and the dark
reaction or Calvin cycle, which converts carbon dioxide into sugar .. in the
chloroplast there is a very small structure resemble disc called thylakoids , and is
located between the stroma membranes, dark reactions occur in the stroma. While
the light reactions occur in the thylakoid .Thylakoid which is usually on many
plants, which have a pair of Photosystem . Photosystem 1 and photosystem II,
which work together to produce the energy that will be used by the stoma to make
sugar performance dark reaction. In the thylakoid has a pigment and chlorophyll
molecule device, the device used to absorb photons. then in photosystem II are
excited 2e incoming photons then undergo resonance and converge to the center
of the chlorophyll electrons then enter the center of the chlorophyll and
transported by the transport of electrons, photons works not only on photosystem
II but also in photosystem I. The electrons lost from photosystem II is replaced by
a process called photolysis. Where water is oxidized to break the H + ions and
electrons while oxygen has a higher voltage so that experience excitation. then
electrons from potosistem II entered into photosystem I that then went into center
chlorophyll then transported by the electron transport which produces NADPH in
this process because of NADP + and the ATP synthesis H + ions and ADP entry
will then result ATP. So overall this light reactions produce ATP and NADPH
which later will be used in the dark reaction or Calvin cycle.
Dark reaction
Dark reaction is a reaction in the continuation of the light reactions of
photosynthesis. This reaction does not need light. Dark reactions occur in the
chloroplast is called the stroma. The material is a dark reaction of ATP and
NADPH, which is generated from the light reaction, and CO2, which is derived
from the free air. From this dark reaction, resulting glucose (C6H12O6), which is
necessary for the reaction catabolism. It was discovered by Melvin Calvin and
Andrew Benson, as it is also called the dark reactions of the Calvin-Benson.Pada
reaction dark reaction consists of three stages: carbon fixation, reduction and