What are the 5 steps of light dependent reactions?

Terms in this set (7)

  • (1st Time) Energy is absorbed from the sun.
  • Water is broken down.
  • Hydrogen ions are transported across the thylakoid membrane.
  • (2nd Time) Energy is absorbed from the sun.
  • NADPH is produced from NADP+.
  • Hydrogen ions diffuse through the protein channel.
  • ADP becomes ATP.

What are the 5 steps of photosynthesis?

Terms in this set (7)

  • Step 1-Light Dependent. CO2 and H2O enter the leaf.
  • Step 2- Light Dependent. Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2.
  • Step 3- Light Dependent. The electrons move down to enzymes.
  • Step 4-Light Dependent. …
  • Step 5-Light independent. …
  • Step 6-Light independent. …
  • calvin cycle.

What are the steps of the 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 are the 4 steps of photosynthesis?

The overall process of photosynthesis can be objectively divided into four steps/ process:

  • Absorption of light. The first step in photosynthesis is the absorption of light by chlorophylls that are attached to the proteins in the thylakoids of chloroplasts. …
  • Electron Transfer. …
  • Generation of ATP. …
  • Carbon Fixation.

What are the steps in photosynthesis explain each step?

The stages of photosynthesis

Stage Location Events
Light-dependent reactions Thylakoid membrane Light energy is captured by chloroplasts and stored as ATP
Calvin cycle Stroma ATP is used to create sugars that the plant will use to grow and live

What are the 4 steps of the Calvin cycle?

The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.

What are the 3 major steps in photosynthesis?

The three events that occur during the process of photosynthesis are: (i) Absorption of light energy by chlorophyll. (ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (iii) Reduction of carbon dioxide to carbohydrates.

What are the 10 steps of photosynthesis?

Terms in this set (10)

  • Step One (Light Reaction) Three ingredients are needed: water, sunlight, and carbon dioxide. …
  • Step Two (Light Reaction) …
  • Step Three (Light Reaction) …
  • Step Four (Light Reaction) …
  • Step Five (Light Reaction) …
  • Step Six (Light Reaction) …
  • Step Seven (Light Reaction) …
  • Step Eight (Dark Reaction)

What are the 5 steps of the Calvin cycle?

The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.

What are the 3 major steps of the Calvin cycle?

The Calvin cycle is organized into three basic stages: fixation, reduction, and regeneration.

What are the 3 steps in the Calvin cycle?

The Calvin cycle reactions can be divided into three main stages: carbon fixation, reduction, and regeneration of the starting molecule.

What are the five environmental factors that affect photosynthesis?

The environmental factors which can affect the rate of photosynthesis are carbon dioxide, light, temperature, water, oxygen, minerals, pollutants and inhibitors.

How many stages are there in photosynthesis?

While there are many steps behind the process of photosynthesis, it can be broken down into two major stages: light-dependent reactions and light-independent reactions.

What is first step in photosynthesis?

Due to the photon of light, electrons of chlorophyll get excited. These electrons are picked up by an electron acceptor which passes them to an electron transport system of cytochromes. The excitement of electrons of chlorophyll b photon of light is the first step of photosynthesis.

What are the steps of the Calvin cycle quizlet?

What are the three phases or steps of the Calvin Cycle? Fixation, reduction, and regeneration.

What does light-dependent reaction use?

The light-dependent reaction is a photochemical reaction taking place in the thylakoid membranes of chloroplasts, where light energy is transformed into adenosine triphosphate (ATP) and nicotinamide adenine dinucleotide phosphate (NADPH).

What are the main steps during Calvin cycle Class 11?

The Calvin cycle can be described under three stages: carboxylation, reduction and regeneration.

Why is the process of Chemiosmosis also called the light-dependent reactions?

Powered by the gradient, H+ ions pass through ATP synthase and force it to rotate. As it rotates, ATP synthase binds ADP and a phosphate group together to produce ATP. This process, called chemiosmosis, enables light-dependent electron transport to produce not only NADPH (at the end of the ETC), but ATP as well.

What is ADP and NADP?

ATP – Adenosine triphosphate. ADP – Adenosine diphosphate. NADP – Nicotinamide adenine dinucleotide phosphate. NADPH – The reduced form of NADP. In the Light Dependent Processes i.e Light Reactions, the light strikes chlorophyll a in such a way as to excite electrons to a higher energy state.

How does the Calvin cycle differ from the light-dependent reactions?

Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. The Calvin cycle, which takes place in the stroma, uses energy derived from these compounds to make GA3P from CO2.

Which of the following is the second step of the Calvin cycle?

1) Carbon fixation – method plants use to attach carbon dioxide from the atmosphere to a chemical (RuBP) in order to start the process of photosynthesis. 2) Reduction phase – second step in the Calvin cycle of photosynthesis, where energy reacts with chemicals to create the simple sugar G3P.

Where do light reactions occur?

The light reaction takes place in the thylakoid discs. There, water (H20) is oxidized, and oxygen (O2) is released. The electrons freed up from water are transfered to ATP and NADPH. The dark reaction occurs outside of the thylakoids.

What are the major products of light dependent stage of photosynthesis?

(c)(i) Major products of light-dependent stage of photosynthesis: – ATP (Adenosine triophosphate)/energy, -H+ (Hydrogen ion), – OH- (Hydroxyl ion), – NADPH2 (reduced nicotinamide adenine dinucleotide phosphate), – 0² (oxygen gas).

How does light affect photosynthesis?

Increasing the light intensity increases the rate of photosynthesis, until some other factor – a limiting factor – becomes in short supply. At very high light intensities, photosynthesis is slowed and then inhibited, but these light intensities do not occur in nature.

What are the 4 limiting factors of photosynthesis?

The major limiting factors for photosynthesis are light intensity, temperature, and carbon dioxide levels.

  • Light Intensity. Since photosynthesis cannot begin without light, it is the first limiting factor. …
  • Temperature. …
  • Carbon Dioxide Concentration.

What is light stage in photosynthesis?

During the light-dependent stage (“light” reactions), chlorophyll absorbs light energy, which excites some electrons in the pigment molecules to higher energy levels, these leave the chlorophyll and pass along a series of molecules, generating formation of NADPH (an enzyme) and high-energy ATP molecules.

What is the second step in photosynthesis?

The Calvin Cycle

The second stage of photosynthesis is the production of glucose from carbon dioxide. This process occurs in a continuous cycle, named after its discoverer, Melvin Calvin. The Calvin cycle uses CO2 and the energy temporarily stored in ATP and NADPH to make the sugar glucose.

What is Stage 2 of photosynthesis called?

The second stage of photosynthesis is called the Calvin cycle. Photosynthesis takes place in two stages – the first phase is where the light reactions or the light-dependant reactions occur. In the second stage, the light-independent reaction takes place, the Calvin cycle.

What is the green pigment in plants called?

Green plants have the ability to make their own food. They do this through a process called photosynthesis, which uses a green pigment called chlorophyll. A pigment is a molecule that has a particular color and can absorb light at different wavelengths, depending on the color.

What is dependent reaction?

Light-dependent Reactions Definition

Those reactions which occur in the presence of light (photons) are known as light-dependent reactions. … The molecules of chlorophyll actively take part in the reaction. They transfer sunlight (solar energy) into potential energy and store it as chemical energy in sugars.

What do light-independent reactions need?

The light-independent reaction uses the electrons from the light-dependent reactions to energize the process, particularly during the conversion of inorganic compounds into organic compounds, such as carbohydrates. They do not require light or energy from the sun to initiate the reaction.

How do light-dependent and light-independent reactions provide food for a plant?

How do light-dependeor and light-independent reactions provide food for a planc? … Through photosynthesis a plane is able to convert electromagnetic (light) energy into chemical energy. This energy is used not only to keep the plant alive, buc also to sustain all creatures that rely on the plant for food and shelter.

What are the reactants of light dependent reaction?

Light dependent reactions convert solar energy to chemical energy (in the form of ATP and NADPH). Sunlight and H2O are the reactant of the light dependent reaction. The sunlight is captured by photosystem II, and is used to excite electrons.

What are the end product of light dependent reaction?

The end products of the light reaction are ATP and NADPH, also known as assimilatory powers.

What are the difference between light dependent reaction and 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.