The requirements or ingredients for light-independent reactions are
carbon dioxide and energy in the form of ATP and NADPH
. The light-independent reactions take in these required ingredients and make glucose.
What reactant is needed in the light-independent reactions?
In photosynthesis,
chlorophyll, water, and carbon dioxide
are reactants. GA3P and oxygen are products.
What is needed for light-independent reactions of photosynthesis?
The ultimate goal of the light-independent reactions (or Calvin cycle) is to
assemble a molecule of glucose
. This is the part of photosynthesis that requires the CO
2
the plant gets from the air. Essentially, the plant needs the carbon from the CO
2
to create the building blocks for glucose.
Why is light needed for light-dependent reactions?
Light is required for the light dependent reactions
because it energizes electrons in the reaction centre
. … Photosynthesis involves light reaction and dark reaction. During light reaction, the chlorophyll present in the (1) _______________ gets activated by absorbing light energy.
What is required for both the light-dependent and light-independent reactions to proceed?
Light dependent reactions occur in Grana of Chloroplasts, Light Independent reactions occur in Stroma of Chloroplasts. Hence Chloroplasts are required for both the light-dependent and light-independent reactions to proceed. Elaine C. The answer is
energy
.
What are the products of light-dependent reactions of photosynthesis?
The exergonic light-dependent reactions of photosynthesis convert light energy into chemical energy, producing
ATP and NADPH
. These reactions occur in the thylakoids of the chloroplasts. The products of the light-dependent reactions, ATP and NADPH, are both required for the endergonic light-independent reactions.
What are the steps of light-dependent reactions?
- Light absorption in PSII. When light is absorbed by one of the many pigments in photosystem II, energy is passed inward from pigment to pigment until it reaches the reaction center. …
- ATP synthesis. …
- Light absorption in PSI. …
- NADPH formation.
Why is light needed?
Light, the essence of life itself. Without it we simply would have nothing. … Light is
the main source of energy for all living organisms
. Plants, main sustainers of life, are crucial in this conversion process and need light for photosynthesis that enables them to make their own food and food for others.
Why is there a need to go on with light-independent reactions Why not stop with the light-dependent reactions since ATP and NADPH are energy carrying molecules?
Why is there a need to go on with Light-Independent reactions? Why not stop with Light-Dependent Reactions since ATP and NADPH are energy carrying molecules? The
Light-Independent uses ATP and NADPH from the Light-Dependent reactions to produce high energy carbohydrates and oxygen
. Where does Carbon Dioxide come from?
Where do the light-independent reactions take place?
The light-independent reactions represent the known Calvin–Benson–Bassham (CBB) cycle which takes place in
the stroma of chloroplasts
and is the primary pathway of carbon fixation of C3 plants [119]. The CBB cycle proceeds in three main stages: carboxylation, reduction and regeneration.
What are the requirements of light-independent reactions quizlet?
The L-D reactions require
light energy and water
, and the L-IND reactions require ATP, NADPH and CO2.
How do you differentiate light-dependent reaction from light independent reaction?
In the light-dependent reactions,
energy from sunlight is absorbed by chlorophyll
and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.
Is light required in light-independent reactions?
The light-independent reactions are sometimes called the Calvin cycle because of the cyclical nature of the process. Although the light-independent reactions do not use light as a reactant (and as a result can take place at day or night), they
require the products of the light-dependent reactions to function
.
What product of light dependent reaction is causing this change?
In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The light-dependent reactions release
oxygen
as a byproduct as water is broken apart.
What reactants are needed for the Calvin cycle?
The reactants of the Calvin cycle are
CO2 from the air and NADPH and ATP from the light reactions
. Light reactions produce NADPH and ATP which is why the Calvin cycle is so dependent on the light reactions.
What are the requirements of light?
The requirements or ingredients for light-independent reactions are
carbon dioxide and energy in the form of ATP and NADPH
. The light-independent reactions take in these required ingredients and make glucose.
What material is needed to set up an experiment to show that light is necessary for photosynthesis?
To show experimentally that light is necessary for photosynthesis. A potted plant, black paper strips or Ganongs light screen, clips or cellotape, alcohol,
iodine solution
, water bath, beaker, burner, water, petri dish, dropper. Light is one of the requirements for photosynthesis.
Which of the following is not needed for light-independent reactions to occur?
Which of the following is not required for the light-independent reactions of photosynthesis? ATP, stroma, NADPH, and CO2 are required for the light-independent reactions of photosynthesis.
H2O
is not required for the Calvin cycle.
How do we use light?
- It helps us to see things.
- It helps plants to make food and grow.
- It is used in power satellites and space stations.
- It is used in many electronic appliances.
Why does Calvin cycle need products of light?
The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light, it is
indirectly dependent on light since the necessary energy carriers (ATP and NADPH)
are products of light-dependent reactions.
What are the two substances needed for photosynthesis?
Carbon dioxide, water and light
are all needed for photosynthesis to take place.
What are the three requirements of light dependent reaction?
These reactions occur within specialised membrane discs within the chloroplast called thylakoids and involve three steps:
Excitation of photosystems by light energy
.
Production of ATP via an electron transport chain
.
Reduction of NADP
+
and the photolysis of water
.
What is light-independent in photosynthesis?
Light-independent reaction is
a series of biochemical reactions in photosynthesis not requiring light to proceed
, and ultimately produce organic molecules from carbon dioxide. The energy released from ATP (produced during the light reactions) drives this metabolic pathway.
Where do light-independent reactions occur quizlet?
The light-independent reactions of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in
the stroma, the fluid-filled area of a chloroplast outside of the thylakoid membranes
.
What process occurs during the light-independent reactions of photosynthesis quizlet?
The light-dependent reactions require light and water, occur in the thylakoids, and produce ATP and NADPH. The light-independent reactions require
carbon dioxide
, occur in the stroma, and produce high-energy sugars.
Does light Reaction require CO2?
Explanation: The light dependent reaction of photosynthesis requires energy in the form of light so as to convert CO2 and H2O into glucose and other substrates. The
light independent reaction does not require light
but can also occur in the presence of light.
How many photons are required for photosynthesis?
–
Eight photons of light
are required to evolve one molecule of oxygen during photosynthesis. – As we already know, photosynthesis occurs in two stages- light-dependent reactions and light-independent reactions. – Light-dependent reactions require light as a source of energy.
