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Photosynthesis

This category is for questions about the chemical process in which autotrophic organisms use sunlight, carbon dioxide and water to make glucose, water and oxygen. This process is vital to life and is of great importance in biology.

6,415 Questions

Does ATP contain stroma?

ATP is a molecule that serves as the primary energy carrier in cells. It is not a physical structure like stroma, which refers to the gel-like fluid inside the chloroplasts. So, ATP itself does not contain stroma.

Is blue green algae a producer?

Algae is a primary producer. Most are microscopic and grow as single cells, small colonies, or filaments of cells. Suspended algae are called phytoplankton, and attached algae are called periphyton.

Does both light reactions and the Calvin cycle produce three-carbon sugars?

No, the light reactions produce high-energy molecules (ATP and NADPH) while the Calvin cycle, which is part of the light-independent reactions, uses these molecules to produce three-carbon sugars through carbon fixation.

What happens to water during the light reaction in photosynthesis?

The core function of photosynthesis is to convert captured light into energy. During this process, the energy from the light is used to split water into elemental O and molecular 2H+.In this form the kinetic light energy is converted to stored chemical energy.

What are the reactions of the first stage of the photosynthesis called?

This is called the light phase oh photosynthesis as opposed to the dark phase. During the light phase, photons excite enzymes on the thylakoid.

Also can be known as Light-Dependent Reactions

What are organisms that can capture energy from sunlight or chemicals called?

Green plants and some bacteria can capture energy from sunlight and chemicals respectively.

How does photosynthesis affect crocodiles?

Photosynthesis provides food for the producers, which are then eaten by first-order consumers, which may be eaten by second-order consumers, and so on, which are then eaten by crocodiles, which are probably the highest-order consumer in the food web, unless humans are involved. Without photosynthesis to convert light energy into chemical energy in food molecules, there would be no producers or consumers, and no crocodiles (or humans).

Does photosynthesis occur only in the internal membranes of chloroplasts?

Photosynthesis primarily occurs in the thylakoid membranes inside chloroplasts. However, some preliminary reactions take place in the stroma, which is the fluid-filled region within the chloroplast. Overall, photosynthesis is a multi-step process that involves various parts of the chloroplast.

How many turns of the calvin cycle are needed to produce a molecule of pgal how many molcules of atp and nadph are used in the process?

I'm pretty sure that it takes 2 PGAL's to make 1 glucose . It takes 6 turns of the Calvin cycle since 3 turns give you 1 PGAL.

Where do the reactant come from for Calvin cycle?

glucose and oxygen are the reactants in this equation, glucose come from the sugars broken down from your food and oxygen come from your lungs, passing through the thin cell wall of the bronchioles into your bloodstream which are in turn absorbed by the mitochondria and the process of respiration takes place

Which statement best explains why the solution in the tube placed in sunlight returned to a blue color?

The solution in the tube turned blue because the sunlight caused the reaction to revert back to the original blue state. This could be due to photoredox chemistry where light triggers a reaction to change the color of the solution.

How does NAD gain energy cellular respiration?

NAD gains energy during cellular respiration by accepting high-energy electrons released during the breakdown of glucose. These electrons are transferred to NAD+ and converted into NADH, which can then participate in the electron transport chain to generate ATP, the cell's primary energy source.

What accurately describes the main reaction that generates the Sun's light?

The main reaction that generates the Sun's light is nuclear fusion, specifically the fusion of hydrogen atoms into helium. This process releases a tremendous amount of energy in the form of light and heat, which is what sustains the Sun's brightness and warmth.

What best describes the light used during photosynthesis?

The light used during photosynthesis is typically in the form of sunlight, which contains a range of wavelengths. Plants primarily absorb light in the blue and red regions of the spectrum to power the process of photosynthesis. This light energy is captured by chlorophyll molecules in plant cells to convert carbon dioxide and water into glucose and oxygen.

Can photosynthesis occur in the non-green parts of variegated leaves?

Yes, photosynthesis can occur in the non-green parts of variegated leaves, but at a lower rate compared to the green parts because the green chlorophyll is the main pigment responsible for capturing light energy. The non-green parts may contain chloroplasts with reduced chlorophyll levels, limiting their photosynthetic efficiency.

Does photosynthesis use energy from ATP and high energy electrons from nadph produced in the light-dependent reactions to make glucose in the Calvin cycle?

Yes, in the Calvin cycle of photosynthesis, ATP and NADPH produced during the light-dependent reactions are used to convert carbon dioxide into glucose through a series of enzyme-controlled reactions. These energy carriers provide the necessary energy and reducing power to drive the synthesis of glucose during the Calvin cycle.

Where does glycolysis take place in plant cells?

Glycolysis occurs in the cytosol (fluid part of cytoplasm) in plant cells.

How Do plants perform photosynthesis during rainy days?

yes it can because if the sun is still out then the process can continue, but if it was a rainy day and the sun was not out then no it couldn't continue.

so it really depends on if the sun is out or not!

Why does temporary wilting takes place in plants?

the wilting of leaves take place in hot summer days because of excess transpiration.the process of transpiration take place in stomata which is present in leaves of plant.in order to excess transpiration plants wilt their leaves

How do baking a cake relate to the two stages of photosynthesis?

Light reactions occur mostly in the thylakoid stacks of the grana. Here, sunlight is converted to chemical energy in the form of ATP (free energy containing molecule) and NADPH (high energy electron carrying molecule). Chlorophyll absorbs light energy and starts a chain of steps that result in the production of ATP, NADPH, and oxygen (through the splitting of water). Oxygen is released through the stomata. Both ATP and NADPH are used in the dark reactions to produce sugar.

Light reactions would be like baking the cake itself in the oven.

Dark reactions occur in the stroma. Carbon dioxide is converted to sugar using ATP and NADPH. This process is known as carbon fixation or the Calvin cycle. Carbon dioxide is combined with a 5-carbon sugar creating a 6-carbon sugar. The 6-carbon sugar is eventually broken-down into two molecules, glucose and fructose. These two molecules make sucrose or sugar.

Dark reactions would like be preparing cake batter, and mixing the ingredients.

Can microorganisms and prokaryotes that have chlorophyll do photosynthesis?

Yes, microorganisms and prokaryotes like cyanobacteria have chlorophyll and are capable of photosynthesis. They use chlorophyll to capture light energy and convert it into chemical energy in the form of glucose through the process of photosynthesis.

What is the loss of carbon-fixing activity of the enzyme RuBP carboxylase directly proportional to?

The loss of carbon-fixing activity of the enzyme RuBP carboxylase is directly proportional to the rate of photorespiration in the plant. As photorespiration increases, the enzyme's efficiency in fixing carbon dioxide decreases, leading to reduced photosynthetic productivity.

What are embedded in thylakoid membranes?

Photosystems, cytochrome complexes, and ATP synthase are embedded in the thylakoid membranes of chloroplasts. These components are involved in the light-dependent reactions of photosynthesis, where light energy is converted into chemical energy to produce ATP and NADPH.

What is the name of the process wherein co2 is released without the production of atp or nadph?

The process you are referring to is called photorespiration. It is a metabolic pathway that releases CO2 without producing ATP or NADPH and occurs in plants when the Calvin cycle is inhibited.