What is the definition of light independent reaction in biology?


What is the definition of light independent reaction in biology?

Key Terms. light-independent reaction: chemical reactions during photosynthesis that convert carbon dioxide and other compounds into glucose, taking place in the stroma.

What is the light dependent reaction function?

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.

What is light dependent and independent reactions?

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.

What is light dependent reaction for kids?

Light dependent reactions occur in the thylakoid membrane of the chloroplasts and take place only when light is available. During these reactions light energy is converted to chemical energy. Chlorophyll and other pigments absorb energy from sunlight.

What is light independent reaction quizlet?

The light-independent reaction: The second and final stage of photosynthesis. It uses the products of the light-dependent reaction (ATP and reduced NADP) to make organic substances for the plant. The Calvin Cycle. AKA the Light-Independent Reaction.

Which best describes light-independent reactions?

Which best describes light-independent reactions? They are the first stage of photosynthesis. They utilize the energy stored in ATP and NADPH. They use carbon dioxide to synthesize proteins.

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.

Where does the light-independent reaction occur?

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.

Where do light-dependent reactions occur Brainly?

Explanation: 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.

What is chlorophyll Kid definition?

Kids Definition of chlorophyll : the green coloring matter found mainly in the chloroplasts of plants that absorbs energy from sunlight to produce carbohydrates from carbon dioxide and water during photosynthesis.

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 does the light dependent reaction take place quizlet?

In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.

What are the major steps of light dependent reactions?

In light reaction of photosynthesis,a plant converts energy from one form to another from solar energy to potential energy to chemical energy.

  • The location of light reaction is in the thylakoid membranes.
  • A continual source of electrons to replenish the lost electrons from chlorophyll is required in light reactions.
  • What do the light independent reactions mean?

    Freebase (4.00 / 1 vote)Rate this definition: Light-independent reactions 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 does the word light dependent reactions mean?

    A light-dependent reaction or light reaction is a chemical reaction that takes place in the presence of light. It is also known as ‘photolysis,’ meaning occurring in the presence of light. For example, plants use sunlight to prepare their food through photosynthesis, which is discussed in this article.

    What are the characteristics of light dependent reactions?

    Light reactions of photosynthesis are light dependent reactions. They are light dependent because for the process to start, a light ray should impinge on the chlorophyll and only then the reactions of photosynthesis begin. Dark reactions of photosynthesis are light independent.

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