What are the end products of the light-independent reaction?
There are two end products of the light reaction of photosynthesis, ATP and NADPH. These molecules are produced during the cyclic and the non-cyclic photophosphorylation reactions. These are the products which are used in the dark reactions.
Does light-independent reaction produce oxygen?
Plants, algae, and cyanobacteria are known as oxygenic photoautotrophs because they synthesize organic molecules from inorganic materials, convert light energy into chemical energy, use water as an electron source, and generate oxygen as an end product of photosynthesis.
What is another name for the light-independent reaction?
Calvin-Benson cycle
Why do you need to add carbon dioxide with the 3 sodium bicarbonate solution?
Why do you need to add carbon dioxide with the 3% sodium bicarbonate (NaHCO3) solution? Carbon dioxide can be used by plants to make glucose during photosynthesis.
What are light and dark reactions?
The light reaction is the initial stage of photosynthesis which traps light energy to produce ATP and NADPH, whereas dark reaction is the second step of photosynthesis which utilizes the energy from ATP and NADPH to produce glucose.
Where do light and dark 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.
Do dark reaction of photosynthesis need light explain?
Dark reaction of photosynthesis does not require light. Both the light and dark reactions occur in the day. As dark reaction does not require light it doesn’t meant it occurs at night it only requires products of light reaction like ATP and NADPH.
What is meant by dark reaction?
dark reaction. Any of the chemical reactions that take place during the second stage of photosynthesis and do not require light. During the dark reactions, energy released from ATP (created by the light reactions) drives the fixation of carbon from carbon dioxide in organic molecules.
What is the importance of dark reaction?
They provide the energy that enable the plant to combine carbon dioxide with other compounds to make sugar. This activity occurs in the stroma of the chloroplast and does not require light. It is therefore known as the dark reaction of photosynthesis.
What is the role of nadph2 in dark reaction?
During these light-dependent reactions of photosynthesis, a chemical called NADP (nicotinamide adenine dinucleotide phosphate) picks up two hydrogen atoms from water molecules forming NADPH2, a powerful reducing agent that is used to convert carbon dioxide into glucose during the dark reactions of photosynthesis (also …
Why are light reactions important?
The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem.
What are the important events and products of light reaction?
Answer: The important events of light reaction are (i) Excitation of chlorophyll molecule to emit a pair of electrons and use of their energy in the formation of ATP from ADP + Pi. This process is called photophosphorylation. Splitting of water molecule (a) (b) End products of light reaction are NADPH and ATP.
What is the importance of the light and dark reactions in photosynthesis quizlet?
What is the importance of the light and dark reactions in photosynthesis? When light reactions take place during photosynthesis, light energy is absorbed from the sun and is used to produce ATP and NADPH. During dark reactions, carbon dioxide, ATP, and NADPH combine to produce glucose.