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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

The Calvin cycle is a series of reactions that?

The Calvin cycle is a series of reaction that regenerates its starting material after molecules enter and leave the cycle. It builds carbohydrates (specifically, the sugar glyceraldehyde-3-phosphate) from smaller molecules and consumes energy. To do this, the Calvin cycle uses ATP as an energy source and consumes NADPH as reducing power.

How can you summarize the reactions that take place in photosynthesis detailed yet brief?

photosynthesis is the fixation of carbon dioxide and it's subsequent reduction to carbohydrate using hydrogen from water.

two sets of reactions are involved, light-dependent and light-independent

light-dependent reactions:

these include synthesis of ATP in phosphorylation and the splitting of water by photolusis to give hydrogen ions. these ions combine with NADP (hydrogen carrier) to form reduced NADP. ATP and reduced NADP are passed from light-dependent to ligt-independent reactions. this process could be cyclic (involves photosystem I only) or non-cyclic which involves both photo systems.

light-independent reactions:

carbon dioxide fixation occurs when it combines with a 5 carbon sugar called ribulose bisphosphate (RuBP) two give 2 molecules og a 3 carbon compound, glycerate 3-phosphate. this compound then turns into triose phosphate sugar in the presence of ATP and reduced NADP.

these triose sugars are then used to form hexose sugars or are converted to acetylcoenzyme to be used in the synthesis of amino acids and lipids. some triose sugar is used to regenerate RuBP. the lght-independant process is called calvin's cycle.

Engelmann's experiment determined which wavelengths of light are most effective at causing photosynthesis In other words Engelmann measured?

Engelmann's experiment measured the rate of oxygen production by algae exposed to different wavelengths of light to determine which wavelengths are most effective at driving photosynthesis. He found that red and blue light were the most effective, with peaks in their absorption spectra correlating with peak photosynthetic activity.

Which component of white light is not necessary for photosynthesis?

Green light is not as efficiently absorbed by plants for photosynthesis compared to other colors. Therefore, plants can perform photosynthesis without relying heavily on green light.

What part of the plant does photosynthesis occur in?

Photosynthesis primarily occurs in the chloroplasts of plant cells. These specialized organelles contain chlorophyll, a pigment essential for capturing sunlight and converting it into chemical energy in the form of glucose.

What is the primary pigment needed for photosynthesis?

chlorophyll because it is the the pigment that captures the suns energy and turns it in to glucose which is a sugar that the plants use for food

What are two main reactions in photosynthesis and where do they take place?

The two main reactions in photosynthesis are the light-dependent reactions and the Calvin Cycle. Light-dependent reactions take place in the thylakoid membranes of chloroplasts, where light energy is converted into chemical energy in the form of ATP and NADPH. The Calvin Cycle, which is also known as the light-independent reactions, takes place in the stroma of chloroplasts and involves the production of glucose from carbon dioxide using ATP and NADPH produced in the light-dependent reactions.

What takes place during photosynthesis?

During photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen. This process occurs in the chloroplasts of plant cells and is essential for the plant's growth and survival. Oxygen is released as a byproduct of this reaction.

When does photosynthesis happen night or day?

Most types of photosynthesis (C3 & C4) occur only during the day, however plants that use CAM photosynthesis open their stomata during the night to take in the gases essential for photosynthesis withoug losing the water in the cells. They then use the CO2 to produce glucose throughout the day.

Define the electron transport chain and describe its location and purpose?

An electron transport chain(ETC) couples a chemical reaction between an electron donor (such as NADH) and an electron acceptor (such as O2) to the transfer of H+ ions across a membrane, through a set of mediating biochemical reactions. These H+ ions are used to produce adenosine triphosphate (ATP), the main energy intermediate in living organisms, as they move back across the membrane. Electron transport chains are used for extracting energy from sunlight (photosynthesis) and from redox reactions such as the oxidation of sugars (respiration).

In chloroplasts, light drives the conversion of water to oxygen and NADP+ to NADPH and a transfer of H+ ions. NADPH is used as an electron donor for carbon fixation. In mitochondria, it is the conversion of oxygen to water, NADH to NAD+ and succinate to fumarate that drives the transfer of H+ ions. While some bacteria have electron transport chains similar to those in chloroplasts or mitochondria, other bacteria use different electron donors and acceptors. Both the respiratory and photosynthetic electron transport chains are major sites of premature electron leakage to oxygen, thus being major sites of superoxide production and drivers of oxidative stress.

What is the purpose of a two-step photosynthesis process in which carbon dioxide is collected at night and then processed by day?

This process, called CAM photosynthesis, allows plants to conserve water by collecting carbon dioxide at night when temperatures are lower and stomata can remain closed. The stored carbon dioxide is then used during the day for photosynthesis when sunlight is available. CAM photosynthesis is common in plants adapted to arid climates where water availability is limited.

10 examples of nonvascular plants?

magnolia trees, palm trees, date trees,ferns,cacti,lemon trees,lime trees,cucumbers,mosses,ginko.

How do you perform a hj?

It's important to maintain open communication and mutual consent with your partner. Start by discussing desires and boundaries, then gradually escalate physical touch and intimacy to ensure both parties are comfortable and enjoying the experience. Remember to prioritize safety by using protection and establishing a safe word for any potential discomfort or need to stop.

Gas used in the process of photosynthesis?

6 CO2 + 6H2O + energy = C6H12O6 + 6O2 so gas used is carbon dioxide and gas produced is oxygen

What is 4 things that plants need for photosynthesis?

Plants need sunlight, carbon dioxide, water, and chlorophyll to carry out photosynthesis. These elements are essential for the process of converting light energy into chemical energy, which the plant uses for growth and development.

What part in the organelle of a plant's cell does photosynthesis take place?

This question needs to be more defined. Plants have many organelles. The organelle in which photosynthesis occurs is called a chloroplast.

Photosynthesis is important for almost all life on earth because it?

photosynthesis is the process whereby energy is produced from water and carbon dioxide by green plants in the presence of sunlight and chlorophyll.

It is important because it converts solar energy to food ( sometimes stored as starch) .

This food in the plants can then be eaten by animals, since animals cannot convert solar energy to glucose.

Without photosynthesis there the earth would be a dead planet because, the cycle of energy flow would be prohibited and all animals (that can't produce food) would die.

What kinds of Organisms use photosynthesis to produce energy?

An organism that uses Photosynthesis to produce glucose is called an Autotroph. Autotrophs are also called "self feeders" because they can produce food(glucose) for their own cells, such as plants.

(A Heterotroph is an organism that consumes other organisms to get food for their cells, such as humans.)

What are the stacks of thylakoids found inside chloroplasts called?

The stacks of thylakoids found inside chloroplasts are called grana. Grana are interconnected by stroma thylakoids and contain the pigment chlorophyll, which is essential for photosynthesis to occur efficiently.

What are groups of thylakoids?

granum are stacks of thylakoids.

grana are several stacks of thylakoids. :)

What is pholem and xylem?

Phloem is responsible for transporting organic nutrients (such as sugars) from the leaves to other parts of the plant, while xylem is responsible for transporting water and minerals from the roots to the rest of the plant. They are vascular tissues found in plants that play crucial roles in nutrient transport and structural support.

Where does the process of photosynthesis begin and end in a cell?

Cellular respiration begins with the transportation of glycolysis into the mitochondria. The final step of cellular respiration will either be fermentation or an electron transport chain depending on whether it is anaerobic or aerobic respiration.

What molecule is a process of photosynthesis?

The molecule involved in the process of photosynthesis is known as glucose. Glucose is produced by plants through photosynthesis, which involves converting carbon dioxide, water, and sunlight into energy-rich sugars.

Does photosynthesis take place in the mitochondria?

No, photosynthesis does not take place in the mitochondria. Photosynthesis occurs in the chloroplasts of plant cells, where it converts sunlight into energy in the form of glucose. Mitochondria are responsible for cellular respiration, where glucose is broken down to produce energy in the form of ATP.