Table of Contents
- 1 Where does C from CO2 end up?
- 2 Where do O atoms from water end up?
- 3 How does a carbon atom travel through the carbon cycle?
- 4 Is CO2 oxidized or reduced in the Calvin cycle?
- 5 Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
- 6 What processes release carbon dioxide into the atmosphere?
Where does C from CO2 end up?
In plants, carbon dioxide ( CO2start text, C, O, end text, start subscript, 2, end subscript) enters the interior of a leaf via pores called stomata and diffuses into the stroma of the chloroplast—the site of the Calvin cycle reactions, where sugar is synthesized.
What happens to CO2 in the Calvin cycle?
What happens to carbon dioxide molecules in the Calvin cycle reactions? carbon dioxide molecules are bonded together with the electrons and H’s from NADPH to form glucose. cO2 goes in and O2 comes out. it helps to exchange them using simple diffusion.
Where do O atoms from water end up?
The oxygen atoms from two water molecules combine to form diatomic oxygen (O2). The hydrogen atoms, which are single protons missing their electrons, aid the creation of the proton gradient within the space enclosed by the thylakoid membrane.
What happens to the atoms of carbon hydrogen and oxygen during the reactions of photosynthesis and cellular respiration?
While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide.
How does a carbon atom travel through the carbon cycle?
Carbon moves from the atmosphere to plants. Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth. Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them.
What is the final product of the Calvin cycle?
glucose
The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP. The Calvin cycle reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is glucose.
Is CO2 oxidized or reduced in the Calvin cycle?
Atmospheric carbon dioxide is converted to glucose during the Calvin-Benson cycle. This requires the overall reduction of CO2, using the electrons available from the oxidation of NADPH. NADPH is oxidized to NADP+ and CO2 is reduced to glucose.
Where is ps1 located in plants?
4. PS I is located in the outer surface of the thylakoid, i.e., appressed regions of grana. 5. The reaction centre of PS I is P700.
Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
Cellular respiration
Carbon dioxide + Water Glucose (sugar) + Oxygen CO2 + H2O C6H12O6 + 6O2 Cellular respiration or aerobic respiration is a series of chemical reactions which begin with the reactants of sugar in the presence of oxygen to produce carbon dioxide and water as waste products.
What is the end product of light reaction?
Difference between Light and Dark Reaction
| Light Reaction | Dark Reaction |
|---|---|
| The end products are ATP and NADPH. | Glucose is the end product. ATP and NADPH help in the formation of glucose. |
| The water molecules split into hydrogen and oxygen. | Glucose is produced. Co2 is utilized in the dark reaction. |
What processes release carbon dioxide into the atmosphere?
Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.
What happens to the carbon atom during photosynthesis?
The carbon atoms are split up and three-carbon molecules are created. During photosynthesis carbon dioxide is removed from the atmosphere, while it releases oxygen into the air. When it is oxidized to carbon dioxide chemical energy is released and captured. The carbon dioxide is then released.