How Are The Light-Capturing Reactions And Co2-Reduction Reactions Of Photosynthesis Related?

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How Are The Light-capturing Reactions And Co2-reduction Reactions Of Photosynthesis Related??

How are the light-capturing reactions and CO2-reduction reactions of photosynthesis related? The products of light-capturing reactions are used in CO2-reduction reactions. … No because ATP synthesis depends only on the presence of a hydrogen ion gradient and does not require light directly.

What is the relationship between the light-dependent reactions and the light independent reactions?

In the light-dependent reactions energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.

How is CO2 used in light reactions?

ATP and NADPH are generated by two electron transport chains during the light reactions. The Calvin cycle uses CO2 and the energy temporarily stored in ATP and NADPH to make the sugar glucose. … This stage combines carbon from carbon dioxide in the air and uses the chemical energy in ATP and NADPH to make glucose.

How are the light reactions and the Calvin cycle related to each other?

The light reactions provide the Calvin cycle with oxygen for carbon fixation and the Calvin cycle provides the light reactions with sugars to produce ATP. The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle and the Calvin cycle provides water and electrons to the light reactions.

What do the light-capturing reactions of photosynthesis produce?

Carbon dioxide and NADPH are produced during the light reactions which are used to power the light dependent reactions.

Is co2 used in the light-dependent reactions?

The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH.
…

Goal	Use stored chemical energy to “fix” CO₂ and create a product that can be converted into glucose
Location	Chloroplasts—stroma
Input	CO₂ NADPH ATP

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Which of the following statements best describes the relationship between the light-dependent and light-independent reactions of photosynthesis?

Which of the following statements best describes the relationship between the light-dependent and light-independent reactions of photosynthesis? The light-independent reactions release energy and the light-dependent reactions require energy.

What is the role of carbon dioxide in photosynthesis?

During the process of photosynthesis cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell such as glucose.

Where does the light reaction of photosynthesis takes place?

thylakoid discs
The chloroplast is involved in both stages of photosynthesis. The light reaction takes place in the thylakoid discs. There water (H20) is oxidized and oxygen (O2) is released.Aug 21 2014

How do the co2 molecules used in photosynthesis reach and enter the chloroplasts inside leaf cells?

Carbon dioxide reaches the chloroplasts in the leaves via a stomata. It basically is a microscopic mouth found on the underside of leaves that is responsible for releasing water (transpiration) in the form of dew and gas exchange.

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.

How does light play a role in the Calvin cycle?

The Innerworkings of the Calvin Cycle. Figure 1. Light-dependent reactions harness energy from the sun to produce ATP and NADPH. These energy-carrying molecules travel into the stroma where the Calvin cycle reactions take place.

How do the events in the Calvin cycle depend on the light-dependent reactions of photosynthesis?

How do the events in the Calvin cycle depend on the light-dependent reactions? The Calvin cycle uses the ATP and NADPH produced during the light-dependent reactions to produce high-energy sugars.

What do the light-capturing reactions of photosynthesis produce quizlet?

It absorbs wavelengths in only the blue and red parts of the visible spectrum. What do the light-capturing reactions of photosynthesis produce? … The conversion of light energy to chemical energy first occurs when electrons are transferred from excited pigments to an electron carrier in a photosystem.

What three reactions occur during the light reactions in photosynthesis?

Light reactions harness energy from the sun to produce chemical bonds ATP and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place. The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation reduction and regeneration.

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Where does the light reaction of photosynthesis take place quizlet?

– The light reactions take place inside the thylakoids of chloroplasts. – The light reactions produce chemical energy in the form of NADPH and ATP.

What is the source of the carbon dioxide that is used in photosynthesis?

Plant Inhalation and Exhalation

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.

How do plants get the carbon dioxide they need for photosynthesis?

For photosynthesis green plants take carbon dioxide from the air. The carbon dioxide enters the leaves of the plant through the stomata present on their surface. Each stomatal pore is surrounded by a pair of guard cells. … During photosynthesis the oxygen gas produces goes out through the leaves of the stomatal pores.

Which of the following best define light-dependent reaction of photosynthesis?

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants the light reactions take place in the thylakoid membranes of organelles called chloroplasts.

Which of the following statements best describes the relationship between light reactions and Calvin cycle?

Which of the following statements best represents the relationships between the light reactions and the Calvin cycle? The light reactions provide ATP and NADPH to the Calvin cycle and the cycle returns ADP Pi and NADP⁺ to the light reactions.

Which of the following best describes what happens in the light-independent reactions?

Which best describes light-independent reactions? They are the first stage of photosynthesis. They utilize the energy stored in ATP and NADPH. They use carbon dioxide to synthesize proteins.

What compound provides the reducing power for the Calvin cycle reactions?

NADPH

This initial incorporation of carbon into organic compounds is known as carbon fixation. The Calvin cycle then reduces the fixed carbon to carbohydrate by the addition of electrons. The reducing power is provided by NADPH which acquired its cargo of electrons in the light reactions.

How does increased co2 affect photosynthesis?

Studies have shown that higher concentrations of atmospheric carbon dioxide affect crops in two important ways: they boost crop yields by increasing the rate of photosynthesis which spurs growth and they reduce the amount of water crops lose through transpiration. … During that process they release water vapor.

Why is co2 a limiting factor of photosynthesis?

As carbon dioxide concentrations increase so too does the rate of photosynthesis until a certain point where the graph levels off. At lower carbon dioxide concentrations carbon dioxide is the limiting factor because an increase in carbon dioxide causes an increase in photosynthesis.

Where does co2 go in photosynthesis?

for photosynthesis. Carbon dioxide enters through tiny holes in a plant’s leaves flowers branches stems and roots. Plants also require water to make their food. Depending on the environment a plant’s access to water will vary.

What reaction takes place during 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 is light reaction and dark reaction in photosynthesis?

The main difference between light and dark reaction is that light reaction is the first stage of photosynthesis which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis which produces glucose by using the energy form ATP and NADPH produced from the light …

How does CO2 enter a plant quizlet?

How does Carbon Dioxide enter the leaf? Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata. (One of these holes is called a stoma.

How does carbon dioxide and water reach the leaves for photosynthesis?

In most land plants water enters the roots and is transported up to the leaves through specialized cells known as xylem (pronounced zigh-lem). … Carbon dioxide and oxygen cannot pass through the cuticle but move in and out of leaves through openings called stomata (stoma = “hole”).