what is the second step of photosynthesis

What Is The Second Step Of 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. 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

Calvin cycle

The Calvin cycle, Calvin–Benson–Bassham (CBB) cycle, reductive pentose phosphate cycle (RPP cycle) or C3 cycle is a series of biochemical redox reactions that take place in the stroma of chloroplast in photosynthetic organisms. … This set of reactions is also called carbon fixation.

What are the 4 main 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 of photosynthesis in order?

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 3 stages of photosynthesis?

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 is photosynthesis step by step?

Where does the second step of photosynthesis occur?

The second stage of photosynthesis takes place in the stroma surrounding the thylakoid membranes of the chloroplast. The reactions of this stage can occur without light, so they are sometimes called light-independent or dark reactions.

What is the second step of photosynthesis Class 10?

In the second stage, the Calvin cycle takes place. Here, carbon dioxide is used to produce glucose. It is a continuously occurring cycle, hence the name. In addition to the carbon dioxide, the energy that is provisionally accumulated in the ATP and NADPH is also used to generate glucose – the sugar.

What are the two main stages of photosynthesis quizlet?

The two stages of photosynthesis are light reactions and the Calvin Cycle. Light reactions occur within the thylakoids and the Calvin Cycle takes place in the stroma. The light reactions create ATP and NADPH, which are used by the Calvin Cycle which also brings in carbon to produce sugar.

What are the two stage of photosynthesis Brainly?

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

What are the two stages of photosynthesis and what occurs in each stage?

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

What is the first step of photosynthesis?

Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.

Why does photosynthesis have two stages?

Photosynthesis represents the biological process by which plants convert light energy into sugar to fuel plant cells. Comprised of two stages, one stage converts the light energy into sugar, and then cellular respiration converts the sugar to Adenosine triphosphate, known as ATP, the fuel for all cellular life.

What occurs in the second phase of photosynthesis quizlet?

The second phase of photosynthesis is called the light independent reaction (or Calvin Cycle). … absorb light energy and make ATP and NADPH.

What are the two stages of cellular respiration?

Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.

Which is the first step in electron transport?

1) In the first step of the ETC, an NADH molecule arrives at protein Complex I, also called NADH dehydrogenase. Complex I receives two electrons from NADH, oxidizing it to NAD+. One hydrogen is pumped into the intermembrane space for each electron. This yields a total of two hydrogens per NADH molecule.

What is the final step of cellular respiration?

Oxidative phosphorylation is the final stage of aerobic cellular respiration. There are two substages of oxidative phosphorylation, Electron transport chain and Chemiosmosis. In these stages, energy from NADH and FADH2, which result from the previous stages of cellular respiration, is used to create ATP.

What are Thylakoid stacks called?

Chloroplasts contain a system of membrane sacs, the thylakoids, some of which are stacked to form grana (singular, granum), whereas others float freely in the stroma. It is on the thylakoid membranes that the electron carriers necessary for photosynthesis reside.

Which of the following is the second step in getting energy in the cell by breaking down glucose after the glycolysis?

In the second step of glycolysis, an isomerase converts glucose-6-phosphate into one of its isomers, fructose-6-phosphate. … This is a type of end product inhibition, since ATP is the end product of glucose catabolism. Step 4. The newly added high-energy phosphates further destabilize fructose-1,6-bisphosphate.

What are the two reactants that are used in the process of photosynthesis?

During photosynthesis, light energy converts carbon dioxide and water (the reactants) into glucose and oxygen (the products).

What are the three stages of glycolysis?

The glycolytic pathway can be divided into three stages: (1) glucose is trapped and destabilized; (2) two interconvertible three-carbon molecules are generated by cleavage of six-carbon fructose; (3) ATP is generated.

What are the 4 steps of the electron transport chain?

The key steps of this process, shown in simplified form in the diagram above, include:

  • Delivery of electrons by NADH and FADH 2​start subscript, 2, end subscript. …
  • Electron transfer and proton pumping. …
  • Splitting of oxygen to form water. …
  • Gradient-driven synthesis of ATP.

What is electron transport in photosynthesis?

Photosynthetic electron transport is the first stage of photosynthesis that produces chemically stored energy and uses solar photons to drive electron transport against a thermodynamic gradient.

In what order do the electrons move through the ETC?

The electrons must travel through special proteins stuck in the thylakoid membrane. They go through the first special protein (the photosystem II protein) and down the electron transport chain. Then they pass through a second special protein (photosystem I protein).

What is the second part of respiration?

The second step in cellular respiration is called the Krebs cycle. The Krebs cycle uses pyruvic acid to create ATP, along with additional molecules like NADH, FADH2, and CO2.

Where does the second stage of cellular respiration occur?

As you can see from Figure above, a mitochondrion has an inner and outer membrane. The space between the inner and outer membrane is called the intermembrane space. The space enclosed by the inner membrane is called the matrix. The second stage of cellular respiration, the Krebs cycle, takes place in the matrix.

What is the starting material of the second stage of cellular respiration?

What is the starting material of the second stage of cellular respiration? The second stage of cellular respiration is the transfer of the energy in pyruvate, which is the energy initially in glucose, into two energy carriers, NADH and FADH2. A small amount of ATP is also made during this process.

Which part is a granum?

A granum is a coin-shaped stack of thylakoids, which are the membrane-like structures found inside the chloroplasts of plant cells. Photosynthesis, or the process by which plants make their own food, occurs in the chloroplasts. … The grana act to increase the surface area of the thylakoids.

What do we call the second reaction in photosynthesis that does not rely on sunlight energy?

However, in environments where there is no sunlight and thus no plants, organisms instead rely on primary production through a process called chemosynthesis, which runs on chemical energy. Together, photosynthesis and chemosynthesis fuel all life on Earth.

What is lumen in chloroplast?

The aqueous lumen enclosed by the thylakoid membrane network of the chloroplast is the compartment where molecular oxygen is produced from water during photosynthetic light-dependent reactions.

What are the 4 stages of cellular respiration and where do they occur?

The cellular respiration process includes four basic stages or steps: Glycolysis, which occurs in all organisms, prokaryotic and eukaryotic; the bridge reaction, which stets the stage for aerobic respiration; and the Krebs cycle and the electron transport chain, oxygen-dependent pathways that occur in sequence in the …

What is the last step of glycolysis?

The last step in glycolysis is catalyzed by the enzyme pyruvate kinase. Conversion of the serendipitously named PEP into pyruvate results in the production of a second ATP molecule by substrate-level phosphorylation and the compound pyruvic acid (or its salt form, pyruvate).

What happens in step 5 of glycolysis?

Step 5: Triosephosphate isomerase

The enzyme triosephosphate isomerase rapidly inter- converts the molecules dihydroxyacetone phosphate (DHAP) and glyceraldehyde 3-phosphate (GAP). Glyceraldehyde phosphate is removed / used in next step of Glycolysis.

What is the end product of photosynthesis?

Though the final product of photosynthesis is glucose, the glucose is conveniently stored as starch. Starch is approximated as (C6H10O5)n, where n is in the thousands. Starch is formed by the condensation of thousands of glucose molecules.

What are the three reactants needed for photosynthesis?


what is the second step of photosynthesis



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