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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

What process requires sunlight?

This question refers how plants produce glucose through the chemical pathway of photosynthesis. That being said photosynthesis produces organic molecules from the organic molecule of carbon dioxide (CO2).

What part of the plant completes photosynthesis?

The leaves of a plant are the primary organs that complete photosynthesis. Within the leaves, specialized structures called chloroplasts house the chlorophyll pigment responsible for capturing light energy and converting it into chemical energy through the photosynthetic process.

The food produced by plants during photosynthesis is used?

The food produced by plants during photosynthesis is used as a source of energy for the plant's growth and metabolism. This stored energy can also be used by other organisms that consume plants for their own survival. Additionally, some of the food produced may be stored in the form of starch for later use by the plant.

What do plants roots soak up for photosynthesis?

Plants roots absorb water and minerals from the soil to support photosynthesis. Water is crucial for transporting nutrients throughout the plant, while minerals like nitrogen, phosphorus, and potassium are essential for various cellular functions that contribute to the process of photosynthesis.

What pigment is most important during photosynthesis?

chlorophyll, which is primarily green, but has many other pigments in it which help the plant absorb a wider spectrum of light. It's just that those other pigments aren't strong enough in ratio to the green to be detected by the human eye which isn't effective at distinguishing pigment ratios

Carbohydrate-synthesizing reactions of photosynthesis directly require?

The carbohydrate-synthesizing reactions of photosynthesis directly require carbon dioxide, water, and sunlight. Through the process of photosynthesis, plants use these raw materials to produce glucose, a simple sugar that serves as the building block for larger carbohydrates such as starch.

Cellular respiration does not use oxygen. true or false?

False. Cellular respiration is the process by which cells convert nutrients into energy, and it requires oxygen in the presence of aerobic organisms. Oxygen is used during the final stage of cellular respiration, called the electron transport chain, to produce the majority of ATP (energy) in cells.

What are two ways in which cellular respiration is the opposite of photosynthesis?

1. It is exothermic, not endothermic (it releases energy rather than storing it)

2. It is catabolic, not anabolic (it breaks down larger molecules into simpler ones, rather than building them)

What type of organisms use photosynthesis to make food?

Plants, algae, and some bacteria use photosynthesis to convert sunlight into energy, producing food (sugar) as a byproduct. These organisms contain chlorophyll, which traps sunlight and enables the conversion of carbon dioxide and water into glucose.

Why does photosynthesis takes place in the leaf?

The disc-shaped cellular organelles called thykaloids within the chloroplasts contain the chlorophyll, which acts as a catalyst to capture energy from sunlight and use it to form new molecules (carbohydrates) from carbon dioxide and water.

What are other names for the light independent reactions?

Biochemistry - of all the continuously occurring biochemical reactions that continually serve to keep both plant and animal Cells Alive, just a small portion of these are photo-synthetic in nature.

How are the chlorophyll molecules in PSI and PSII reset?

The chlorophyll molecules in Photosystem I (PSI) and Photosystem II (PSII) are reset when an electron is donated to them from an external source, such as when water is split during the light-dependent reactions of photosynthesis. This replenishes the electrons lost during the light-harvesting process, allowing the chlorophyll molecules to continue their role in capturing and transferring light energy.

What organelle undergoes photosynthesis?

Chloroplasts are the organelles that undergo photosynthesis in plant cells. They contain chlorophyll which is responsible for capturing light energy and converting it into chemical energy in the form of glucose.

How does lactic acid fit into the process of cellular respiration?

Lactic acid is produced in cells when oxygen levels are low, as an alternative pathway to generate energy in the absence of oxygen. This process is known as anaerobic respiration or fermentation. Lactic acid fermentation helps to regenerate NAD+ to keep glycolysis running in the absence of oxygen.

Why does light affect the rate of photosynthesis?

as the distance from the plant increases, the rate of photosynthesis decreases - as less light energy is reaching the plant. Energy cannot be created or destroyed, therefore, if more light energy is put into the equation, more glucose and oxygen will be produced and glucose can be used for processes in the plant such as growth and respiration.

Increasing the intensity of light decreases the rate of photosynthesis true or false?

False. Increasing the intensity of light typically increases the rate of photosynthesis, up to a certain point where other limiting factors may come into play.

What effect would a sudden decrease in light intensity have on the rate of photosynthesis of a particular plant?

Photosynthesis (the means of how a plant makes food to live) requires light, carbon dioxide, and water (or in some cases another electron donor compound). Deprive it of two of the three components and it can't occur and the plant will die and oxygen will not get produced. Stop enough of the plants/trees on the earth and then we eventually die.

Cluster of pigments and proteins that absorbs light?

A photosystem is a cluster of pigments and proteins found in chloroplasts and photosynthetic bacteria that absorbs light energy during photosynthesis. The absorbed light energy is used to drive the process of converting carbon dioxide and water into glucose and oxygen.

What are the name of two products of photosynthesis?

The two products of photosynthesis are glucose (sugar) and oxygen.

1 Explain why shorter wavelengths are more dangerous than those with longer wavelengths?

Shorter wavelengths have higher energy levels, making them more likely to cause damage to living tissues. This is because they can penetrate deeper into the body and interact more strongly with biological structures. Examples of shorter wavelength radiation include gamma rays and X-rays, which are known to be harmful to human health.

What would happen to photosynthesis if all three-carbon sugars produced in the Calvin cycle were used to make organic compounds?

If all three-carbon sugars produced in the Calvin cycle were used to make organic compounds, there would be no net production of glucose or other sugars needed for energy storage. This would result in a depletion of essential carbon molecules for the plant's growth and survival, ultimately disrupting the process of photosynthesis and affecting overall plant health.

How do you show that photosynthesis has occurred?

You can but only over a period of time and indirectly. If you place a cover on a seeding that blocks out all light , you will see the effects of no photosynthesis. Compare that with a seedling you don't cover, you will see that it will grow by using the energy produced by photosynthesis.

What two named features enable the leaf to carry out photosynthesis?

Chloroplasts and stomata are two named features that enable the leaf to carry out photosynthesis. Chloroplasts contain chlorophyll, the pigment that captures sunlight energy for the process, while stomata are small openings that allow for gas exchange necessary for photosynthesis.

What is the fluid that surrounds the thylakoids in chloroplasts?

Thylakoid membrane, like mitochondrial cristae, contains the elements of the plant electron transport chain.