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 is Stage 3 photosynthesis called?
Stage 3: Storing Radiant Energy
The last stage of the photosynthesis process is known as the Calvin-Benson cycle, in which the plant uses atmospheric carbon dioxide and water from soil to convert ATP and NADPH. The chemical reactions that make up the Calvin-Benson cycle occur in the stroma of the chloroplast.
What are the stages of photosynthesis?
- The light-dependent reactions;
- The light-independent reactions, or Calvin Cycle.
What is the 1st stage of photosynthesis?
In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the hydrogen carrier NADPH and the energy-storage molecule ATP. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
What are the 3 stages of Calvin cycle?
Reactions of 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 3 stages of cellular respiration?
Summary: the three stages of Aerobic Respiration
Carbohydrates are broken down using all three stages of respiration (glycolysis, citric acid cycle and the electron transport chain).
What are two stages in photosynthesis?
There are two main stages of photosynthesis: the light-dependent reactions and the Calvin cycle.
Why is it called C3 cycle?
The most common set of carbon fixation reactions is found in C3-type plants, which are so named because the major stable intermediate is the 3-carbon molecule, glyceraldehyde-3-phosphate. These reactions, best known as the Calvin cycle (Figure 6.2.
Why is the third stage of Calvin cycle called the regeneration stage?
Why is the 3rd stage of the Calvin Cycle called the regeneration Stage? Because RuBP, which starts the cycle is regenerated from G3P. … It catalyzes the reaction between carbon dioxide and RuBP at the start of the cycle.
What are the stages of the Calvin cycle quizlet?
What are the three phases or steps of the Calvin Cycle? Fixation, reduction, and regeneration.
What are the 3 main steps of the electron transport chain?
- Generation of a proton gradient across the mitochondrial membrane. Proton accumulation occurs in the intermembrane space of mitochondria.
- Reduction of molecular oxygen and formation of water. …
- ATP synthesis by chemiosmosis.
What are the 3 stages of anaerobic respiration?
This process occurs in three stages: glycolysis , the Krebs cycle , and electron transport .
What are the 3 stages of cellular respiration quizlet?
The cellular respiration process consists of three stages: glycolysis, the Krebs cycle, and the electron transport chain.
Why C4 cycle is called so?
Like all pumps, the C4 cycle requires an input of energy in the form of ATP. … C4 plants are so-called because the first product of CO2 fixation is a C4 organic acid, oxaloacetate, formed by the carboxylation of phosphoenolpyruvate (PEP) by PEP carboxylase.
What is difference between C3 and C4?
Character | C3 plants | C4 plants |
---|---|---|
Efficiency | C3 plants are less efficient in photosynthesis. | C4 plants are more efficient in photosynthesis. |
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.
What are the basic stages of the Calvin cycle?
The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase.
Why does it take 3 turns before producing a G3P?
Because the G3P exported from the chloroplast has three carbon atoms, it takes three “turns” of the Calvin cycle to fix enough net carbon to export one G3P. But each turn makes two G3Ps, thus three turns make six G3Ps.
Where does Calvin cycle take place in chloroplast describe the three phases of Calvin cycle?
These energy-carrying molecules travel into the stroma where the Calvin cycle reactions take place. In plants, carbon dioxide (CO2) enters the chloroplast through the stomata and diffuses into the stroma of the chloroplast—the site of the Calvin cycle reactions where sugar is synthesized.
What are the reactants of photosynthesis?
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
What are three environmental factors that affect photosynthesis?
Three factors can limit the rate of photosynthesis: light intensity, carbon dioxide concentration and temperature.
What does Rubisco mean?
Ribulose bisphosphate carboxylase/oxygenase (Rubisco) is a key enzyme in photosynthesis catalyzing corbondioxide fixation. … Therefore, plant Rubisco is expected to be a large source of food protein in the future.
What is the first stage of cellular respiration?
Glycolysis, the first step of cellular respiration, occurs in the cytoplasm of your cells. During this process, a glucose molecule is broken down into two molecules of pyruvate (pyruvic acid).
What is the third step in cellular respiration ?( 1 point?
The third and final stage of cellular respiration, called electron transport , takes place on the inner membrane of the mitochondrion. Electrons are transported from molecule to molecule down an electron-transport chain.
What are the steps of electron transport system?
The associated electron transport chain is NADH → Complex I → Q → Complex III → cytochrome c → Complex IV → O2 where Complexes I, III and IV are proton pumps, while Q and cytochrome c are mobile electron carriers. The electron acceptor providing the energy for this process is molecular oxygen.
What is the third stage of aerobic respiration?
Recognize that electron transport chain is the third and final stage of aerobic cellular respiration. Identify the products of the citric acid cycle.
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 are the 2 stages of anaerobic respiration?
The first step in both anaerobic and aerobic respiration is called glycolysis. This is the process of taking one glucose (sugar) molecule and breaking it down into pyruvate and energy (2 ATP). We will discuss this in depth during aerobic respiration. The second step in anaerobic respiration is called fermentation.
What are the stages of photosynthesis quizlet?
- 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 three parts of cellular respiration and where does each step occur?
Cellular respiration is the process in which cells break down glucose, release the stored energy, and use it to make ATP. The process begins in the cytoplasm and is completed in a mitochondrion. Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport.
What are the reactants and products of all three stages of respiration?
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
What is C2 cycle?
CYCLE OR C2 CYCLE. The light-dependent O2 uptake and CO2 release that occurs in photosynthetic organisms has been termed photorespiration. The metabolic pathway for photorespiration, in which sugars are oxidized to CO2 in the light, is known as the oxidative photosynthetic carbon cycle or C2 cycle.
Which is the first CO2 acceptor in C3 cycle?
Complete answer: In the C3 cycle, carbon dioxide is reduced to form a first three carbon stable compound, 3-phosphoglyceric acid 3-PGA. 1. The initial carbon dioxide acceptor is a five-carbon molecule which is RUBP or Ribulose-1,5-biphosphate and RuBP carboxylase catalyzes this reaction.
What is C3 pathway?
Definition. A metabolic pathway where CO2 is converted to 3-phosphogylycerate, the first stable intermediate organic compound containing three carbon atoms. Supplement. The C3 carbon fixation pathway is in fact the initial phase of Calvin cycle.