What are the two stages of photosynthesis?

What are the two stages of photosynthesis?

Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.

What are the light and dark stages of photosynthesis?

What is the difference between light and dark reaction? 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.

What is the dark reaction of photosynthesis called?

The Calvin cycle, light-independent reactions, bio synthetic phase, dark reactions, or photosynthetic carbon reduction (PCR) cycle of photosynthesis are the chemical reactions that convert carbon dioxide and other compounds into glucose.

What is dark reaction explain?

: any of a series of chemical reactions in photosynthesis not requiring the presence of light and involving the reduction of carbon dioxide to form carbohydrate especially : calvin cycle.

Is oxygen released in light or dark reactions?

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.

How do light and dark reactions work together?

Light and dark reactions in photosynthesis Light-independent reactions (dark reactions). Light reactions need light to produce organic energy molecules (ATP and NADPH). They are initiated by colored pigments, mainly green colored chlorophylls. Dark reactions make use of these organic energy molecules (ATP and NADPH).

Why are light and dark reactions important in photosynthesis?

What is the importance of the light and dark reactions in photosynthesis? During the light reactions of photosynthesis, light energy from the sun is captured and used to make ATP and NADPH. During the dark reactions, ATP, NADPH, and carbon dioxide combine to make glucose and other compounds.

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.

What is the importance of dark reactions in photosynthesis?

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 materials are needed for light reactions?

The reactants of photosynthesis are carbon dioxide and water. These are the molecules necessary to begin the process. But one more item is necessary, and that is sunlight. All three components, carbon dioxide, water, and the sun’s energy are necessary for photosynthesis to occur.

What are the raw materials of dark reactions?

In the dark reaction, carbon and oxygen from the carbon dioxide molecule, along with the hydrogen left over from the light reaction, combine (in a series of complex reactions) to form glucose, a simple sugar.

What are the 7 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 3 products of light-dependent reactions?

The products of the light-dependent reactions, ATP and NADPH, have lifespans in the range of millionths of seconds, whereas the products of the light-independent reactions (carbohydrates and other forms of reduced carbon) can survive for hundreds of millions of years.

Does light-dependent reaction produce oxygen?

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 is another name for the light independent reactions?

Calvin-Benson cycle

What reactants are used in light-dependent reactions?

The reactants in the light-dependent chemical reaction are adenosine diphosphate (ADP), oxydized nicotinamide adenine dinucleotide phosphate (NADP+) and the hydrogen in water.

What are the reactants and products for both light and dark reactions?

Both light dependant and dark reactions are types of photosynthetic reactions. Dark reactions occur in the grana of chlorophyll,and get energy from ATP and NADPH. The reactants are water and carbon dioxide.

What is the end product of Calvin cycle?


Which is the best description of Photophosphorylation?

Answer Expert Verified. Photophosphorylation is a process that occurs during photosynthesis in plants. It is the conversion of ADP (Adenosine Diphosphate) into ATP (Adenosine Triphosphate) using light energy. ATP (Adenosine Triphosphate) is the energy currency of life of all living organisms.

Which is the best description of the light reaction of photosynthesis?

34 Cards in this Set

What was the goal behind the creation of golden rice? To develop rice that contained vitamin A
Which is the best description of the light reaction of photosynthesis? Chlorophyll absorbs solar energy and shoots off an electron, which is transferred through a series of compounds

Which best lists the end products of the light-dependent reactions?

The answer to this question is ATP and NADPH.

How is ADP converted to ATP?

ADP is combined with a phosphate to form ATP in the reaction ADP+Pi+free energy→ATP+H2O. The energy released from the hydrolysis of ATP into ADP is used to perform cellular work, usually by coupling the exergonic reaction of ATP hydrolysis with endergonic reactions.

What is the net charge of ATP?

Here’s what it looks like chemically. Each phosphate is a PO4 (oxygen has a charge of -2 and there are 4 of them, for a total of -8, and P has a charge of +5, so the net charge on the phosphate group is -3.

What is it called when ADP becomes ATP?

The conversion of ADP to ATP in the inner membranes of mitochondria is technically known as chemiosmotic phosphorylation.

What does ATP look like?

Its Structure The ATP molecule is composed of three components. At the centre is a sugar molecule, ribose (the same sugar that forms the basis of RNA). These phosphates are the key to the activity of ATP. ATP consists of a base, in this case adenine (red), a ribose (magenta) and a phosphate chain (blue).

What is the basic structure of ATP?

ATP is a nucleotide that consists of three main structures: the nitrogenous base, adenine; the sugar, ribose; and a chain of three phosphate groups bound to ribose. The phosphate tail of ATP is the actual power source which the cell taps.

Where is energy stored in ATP?

Adenosine Triphosphate Energy is stored in the bonds joining the phosphate groups (yellow). The covalent bond holding the third phosphate group carries about 7,300 calories of energy.

What foods are high in ATP?

Boost your ATP with fatty acids and protein from lean meats like chicken and turkey, fatty fish like salmon and tuna, and nuts. While eating large amounts can feed your body more material for ATP, it also increases your risk for weight gain, which can lower energy levels.