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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

Why only a small amount of the light energy from the sun that reaches the earth is used during photosynthesis?

Only a small amount of the light energy from the sun is used during photosynthesis because plants can only absorb specific wavelengths of light (mainly blue and red light) for the process of photosynthesis. Green light is reflected and not utilized. Additionally, not all the absorbed light energy is converted into chemical energy due to limitations in the efficiency of the photosynthetic process.

Do All bacteria use light energy to fix carbon?

No many prokaryotic cells can use inorganic chemical compounds (S and Fe) in chemosynthetic processes to fix Carbon into organic molecules - Some chemosynthetic prokaryotes are Archaeans and some are in the Domain Bacteria

Why is photosynthesis a critically important process?

Photosynthesis is the method which allows plants to make glucose(their source of nutriment). They are autotrophs and are located at the bottom of the food chain (the base if you will). If there is no more photosynthesis there is no more glucose. If there is no more glucose there is no more plants. If there is no more plants, there will be no more living things.

What part of plant cell is needed for photosynthesis to happen?

Chloroplasts are the part of a plant cell where photosynthesis occurs. These organelles contain chlorophyll, which is a pigment that captures sunlight and converts it into energy that is used to produce glucose.

Which atmospheric gases do photosynthesis and cellular respiration help keep constant?

Photosynthesis helps keep oxygen levels constant by converting carbon dioxide into oxygen, while cellular respiration helps keep carbon dioxide levels constant by converting oxygen into carbon dioxide. These processes are vital for maintaining the balance of atmospheric gases essential for life on Earth.

What happened to most of the raw materials found in Jamestown?

Many raw materials found in Jamestown were exported back to England to generate profit, including timber, tobacco, and furs. Some materials were used locally for construction and food production. Over time, the exploitation of resources led to deforestation and soil degradation in the area.

Can some types of bacteria can make their own energy through photosynthesis?

Yes, certain types of bacteria, such as cyanobacteria, are capable of photosynthesis and can produce their own energy by converting sunlight into chemical energy. This process is similar to that of plants, where the energy of sunlight is used to produce glucose from carbon dioxide and water.

Where do purple roses grow?

Purple roses can grow in various locations depending on climate and conditions. They thrive in areas with well-draining soil, plenty of sunlight, and moderate temperatures. Some popular regions where you might find purple roses include Europe, North America, and parts of Asia.

Why is hydrilla stem cut underwater in photosynthesis experiment?

Hydrilla stems are cut underwater in photosynthesis experiments to prevent air from entering the stem and disrupting the oxygen levels in the water. By cutting the stems underwater, scientists can maintain a controlled environment for studying how plants release oxygen during photosynthesis. This method ensures that the oxygen measured in the experiment accurately reflects the photosynthetic activity of the plant.

Cellular respiration cannot occur without the presence of what molecule?

Oxygen. Oxygen is necessary for cellular respiration to occur because it serves as the final electron acceptor in the electron transport chain, allowing for the production of ATP.

Once ATP is converted into ADP plus P what happen?

The question is quite broad.

Please make the question narrower.

But I can give some of the things that might happen in relation to the question:

It could be that sugar is produced,

It could be the assemble of some photosynthetic components,

it could be the conversion of matter into energy,

it could be the dark reaction... etc

What are the reactants of light independent reactions in photosynthesis?

The reactants in the light independent reactions of photosynthesis are carbon dioxide (CO2) and ATP (adenosine triphosphate) and NADPH produced in the light-dependent reactions. These reactions occur in the stroma of the chloroplast and lead to the formation of glucose through the Calvin cycle.

Is sunlight a must for photosynthesis?

yes it is in school we learnt that : carbon dioxide + water ----> oxygen + glucose with sunlight and energy above the arrow and when you reverse the equation you get the equation for respiration

What does the plant do with the products of photosynthesis?

Plants use glucose, or sugar (one example of a carbohydrate) as food. Which allows plants to grow and convert CO2 (what humans and other animals breathe out) into Oxygen, as long as they have water as well!

When do respiration and photosynthesis take place?

Respiration takes place continuously in living organisms, including plants, to generate energy from glucose. Photosynthesis occurs during daylight hours in plants in the presence of sunlight, where they use carbon dioxide, water, and sunlight to produce glucose and oxygen.

What is the production of ATP in photosynthesis called?

Glycolysis produces ATP in plants to power cellular processes. Photosynthesis harnesses the energy from the sun and stores it in glucose molecules.

In photosynthesis redox reactions ultimately transfer electrons from where?

§Photosynthesis, like respiration, is a redox (oxidation-reduction) process

-Water molecules are split apart by oxidation, which means that they lose electrons along with hydrogen ions (H+)

-Then CO2 is reduced to sugar as electrons and hydrogen ions are added to it

This means that the electrons are moved from a water molecule to a carbon dioxide molecule. H2O >> CO2

What are the site of ATP production and the site of photosynthesis?

In plant leaves, chloroplasts make the green pigment chlorophyll. This is the substance that can extract energy from sunlight. Plants use the energy to create glucose and oxygen from the raw materials carbon dioxide and water. In plant leaves, this takes place in a layer called the mesophyll.

Can only plants carry out photosynthesis?

No, plants are not the only organisms that can carry out photosynthesis. Some algae, bacteria, and certain protists also have the ability to photosynthesize by using sunlight to convert carbon dioxide and water into glucose and oxygen.

What are four reasons photosynthesis is important to life?

The process of photosynthesis enables plants to sustain their own life by taking in carbon dioxide and producing oxygen.

The oxygen they produce is the oxygen that humans breathe.

Photosynthesis enables plants to keep alive so that this process may continue.

Plants are important for several other reasons (vegetation, soil cover) and the process of photosynthesis ensures that these other functions can be fulfilled without human supervision, because the plant can sustain its own life through photosynthesis and carry out its necessary functions.

What is the name of a plant with green leaves and two lines of red dots?

The plant you are referring to is most likely a Polka Dot Plant (Hypoestes phyllostachya). This plant has green leaves with pink or red dots on the surface, giving it a distinctive appearance. It is a popular indoor plant known for its colorful foliage.

What are some limiting factors of the photosynthesis process?

The maximum rate of photosynthesis is controlled by the limiting factor.

For instance, increasing the temperature from 10ºC to 20ºC could double the rate of photosynthesis as the plant's enzymes will be closer to their optimum working temperature. As the temperature is increased, molecules in the cells will be moving at a faster rate due to kinetic theory. If the temperature is raised above a certain level, the rate of photosynthesis will drop as the plant's enzymes are denatured. They will therefore be more likely to join onto the enzymes and react. But if this happens the plant will need more water or light so they become the limiting factor.

Most plants have ways to make up for the insufficient supply of any of them. Most plants grow towards their light source. Also a lot of plants have very deep roots that can make up for insufficient water supply. If a human wanted to increase the yield of a plant they would put up artificial lights, fertilisers to increase minerals in soil and a sprinkler system to keep the plants watered.

Do cellular respiration and photosynthesis occur at the same time?

No, cellular respiration and photosynthesis cannot occur in the same cell at the same time because they have opposite requirements. Cellular respiration requires oxygen and glucose to produce energy, while photosynthesis requires carbon dioxide and sunlight to produce glucose and oxygen. They are typically balanced out in plants over a day-night cycle.