The carbon atoms used to build carbohydrate molecules comes from carbon dioxide, the gas that animals exhale with each breath The Calvin cycle is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules
What is the source of the CO2 used in photosynthesis?
Plants extract the carbon dioxide from the air and use it in photosynthesis process to feed themselves The carbon dioxide enters the leaves of the plant through small pores called stomata Once the carbon dioxide enters the plant, the process begins with the help of sunlight and water
What does CO2 provide in the Calvin cycle?
The Calvin cycle is a process that plants and algae use to turn carbon dioxide from the air into sugar, the food autotrophs need to grow Every living thing on Earth depends on the Calvin cycle Plants depend on the Calvin cycle for energy and food
Where does the CO2 come from that is used in the Calvin cycle quizlet?
each turn of the Calvin cycle, there are chemical inputs and outputs The inputs are carbon dioxide from the air and the ATP and NADPH produced by the light reactions cycle uses carbon from the carbon dioxide, energy from the ATP, and high-energy electrons and hydrogen ions from the NADPH
What source of energy is used in the Calvin cycle?
In the Calvin cycle, atmospheric carbon dioxide is incorporated into ribulose bisphosphate (RuBP) The ATP and NADPH which are produced in the light-dependent reactions are utilised as the source of energy in the Calvin Cycle
Where does carbon dioxide come from?
Natural sources of carbon dioxide include most animals, which exhale carbon dioxide as a waste product Human activities that lead to carbon dioxide emissions come primarily from energy production, including burning coal, oil, or natural gas
What is the source of the carbon dioxide that is used in photosynthesis quizlet?
Three sources of CO2 is sunlight glucose (sugar) and oxygen What type of energy does the plant use to convert CO2 and H2O into sugar? The type of energy is sunlight
What is the main product of the Calvin cycle?
The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP These reactions use chemical energy from NADPH and ATP that were produced in the light reactions The final product of the Calvin cycle is glucose
What is the carbon dioxide?
Carbon dioxide is a colorless and non-flammable gas at normal temperature and pressure Although much less abundant than nitrogen and oxygen in Earth’s atmosphere, carbon dioxide is an important constituent of our planet’s air A molecule of carbon dioxide (CO2) is made up of one carbon atom and two oxygen atoms
What is the main product of the Calvin cycle quizlet?
The product of the Calvin cycle is a triose-phosphate sugar that is either exported from the chloroplast or used to regenerate RUBP
What is produced by the Calvin cycle quizlet?
The Calvin cycle produces ADP, NADP+, and phosphates that are used in the light reactions
Why is the use of carbon dioxide in the Calvin cycle reactions important?
Why is the use of carbon dioxide in the Calvin cycle reactions important? ixation of carbon dioxide in the dark reactions makes it usable for all life-forms What is photorespiration? Photorespiration is the process that prevents glucose production in C3 plants when CO2 levels are low and O2 levels are high
When carbon dioxide enters the Calvin cycle What combines with?
The Calvin Cycle uses the NADPH and ATP from the Light Reactions to “fix” carbon and produce glucose Carbon dioxide enters the Calvin Cycle when Rubisco attaches it to a 5-carbon sugar
What happens to CO2 when it moves into the stroma?
In plants, carbon dioxide (CO2) enters the leaves through stomata, where it diffuses over short distances through intercellular spaces until it reaches the mesophyll cells Once in the mesophyll cells, CO2 diffuses into the stroma of the chloroplast, the site of light-independent reactions of photosynthesis
How does carbon dioxide produce sucrose?
Outline how sucrose is produced from carbon dioxide in pea plants Carbon dioxide reacts with water in the presence of light energy to make glucose and oxygen Glucose is used to make sucrose
How is CO2 produced?
During combustion or burning, carbon from fossil fuels combine with oxygen in the air to form carbon dioxide and water vapor Commercially, carbon dioxide is produced by burning natural gas to separate the carbon and hydrogen atoms The carbon atoms can then combine with oxygen to create CO2 as a by-product
Where does CO2 come from naturally?
Yes, there are natural sources of atmospheric carbon dioxide, such as outgassing from the ocean, decomposing vegetation and other biomass, venting volcanoes, naturally occurring wildfires, and even belches from ruminant animals
What produces the most CO2?
Fossil fuel combustion/use 6 Of all the different types of fossil fuels, coal produces the most carbon dioxide Because of this and it’s high rate of use, coal is the largest fossil fuel source of carbon dioxide emissions
What is the carbon fixation stage of the Calvin cycle?
In fixation, the first stage of the Calvin cycle, light-independent reactions are initiated; CO2 is fixed from an inorganic to an organic molecule In the second stage, ATP and NADPH are used to reduce 3-PGA into G3P; then ATP and NADPH are converted to ADP and NADP+, respectively
What is produced during the light-independent reactions of photosynthesis quizlet?
The light-dependent reactions require light and water, occur in the thylakoids, and produce ATP and NADPH The light-independent reactions require carbon dioxide, occur in the stroma, and produce high-energy sugars
What are the products of photosynthesis?
Photosynthesis converts carbon dioxide and water into oxygen and glucose Glucose is used as food by the plant and oxygen is a by-product
What are the three main inputs to the Calvin cycle?
The inputs to the Calvin cycle are CO₂, ATP, and NADPH The CO₂ comes from the atmosphere around the plant, and the ATP and NADPH come from the light-dependent reaction
Do carbon dioxide molecules enter the Calvin cycle from the atmosphere?
Carbon dioxide molecules enter the Calvin cycle from the atmosphere Energy from ATP and high-energy electrons from NADPH are used to convert 3-carbon molecules into similar (ALTERED) 3-carbon molecules The Calvin cycle uses six molecules of carbon dioxide to produce a single 6-carbon sugar molecule