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Where do 'dark reactions' take place?
Dark reactions, also known as the Calvin cycle, take place in the stroma of chloroplasts in plant cells. These reactions use the products of the light-dependent reactions to convert carbon dioxide into glucose through a series of enzyme-catalyzed steps.
Does every enzyme possess an active site for catalyzing chemical reactions?
Yes, every enzyme possesses an active site where it catalyzes chemical reactions.
What is the role of ATP in light-dependent reaction?
ATP is produced during the light-dependent reactions of photosynthesis through photophosphorylation. It provides energy for the Calvin cycle (dark reactions) by powering enzyme activity and providing the necessary energy for carbon fixation and the synthesis of carbohydrates.
How long will dark reactions run in the absence of light?
Dark reactions can continue to run in the absence of light since they are not dependent on light energy for their process. These reactions, such as the Calvin cycle, use the products of the light-dependent reactions to convert carbon dioxide into sugar molecules. Therefore, they can occur in the dark as long as the necessary molecules and enzymes are present.
How are the dark reactions that occur in plants dependent on the light reactions?
The dark reactions that occur in plants are dependent on the light reactions because the dark reactions need ATP and NADPH. ATP and NADPH are energy molecules that dark reactions need to do their job.
Where do 'dark reactions' take place?
Dark reactions, also known as the Calvin cycle, take place in the stroma of chloroplasts in plant cells. These reactions use the products of the light-dependent reactions to convert carbon dioxide into glucose through a series of enzyme-catalyzed steps.
Does the Calvin cycle occur only in the dark?
It cannot occur in the dark. It contains an enzyme called rubisco which is a light-activated enzyme. Also the Calvin cycle uses the chemical energy produced in the light reactions, and the light reactions need sunlight energy in order to produce the energy needed in the Calvin cycle. Hope that helps :)
During the dark reactions the reaction center splits water?
During the dark reactions (Calvin cycle) of photosynthesis, water is not split. Instead, the dark reactions use the products of the light reactions (ATP and NADPH) to convert carbon dioxide into glucose through a series of enzyme-controlled reactions. The splitting of water occurs in the light reactions at Photosystem II to generate oxygen, electrons, and protons.
What ia an enzyme?
an enzyme is protien that catalyzes chemical reactions for organisms
What is a protein that changes the rate of chemical reactions?
its called an enzyme
How enzymes influence chemical reactions in living systems by?
We can use the lock and key hypothesis to describe the work of an enzyme,in this the substrate are the pieces to be joined and the enzyme shape represent their whole,thats why the shape of an enzyme is necessary for its work
Where does dark reaction occur in chlorplast?
The dark reaction, also known as the Calvin Cycle, occurs in the stroma of the chloroplasts. This process uses ATP and NADPH generated from the light-dependent reactions to convert carbon dioxide into glucose through a series of enzyme-catalyzed reactions.
What kind of chemical reactions speed up enzyme catalysis?
This varies per enzyme and what it catalyzes but chemical reactions that result in an increase in temperature often speed up enzyme catalysis.
How are the dark reactions that occur in plants dependent on the light-reactions?
The dark reactions that occur in plants are dependent on the light reactions because the dark reactions need ATP and NADPH. ATP and NADPH are energy molecules that dark reactions need to do their job.
Does every enzyme possess an active site for catalyzing chemical reactions?
Yes, every enzyme possesses an active site where it catalyzes chemical reactions.
What terms refers to a protein that catalyzes chemical reactions in organisms?
Yes, that is correct.
How the light and dark reactions work together?
The light reactions provide energy carriers for the dark reactions.
