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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 is the final product of the Calvin cycle that can be used as food?

The final product of the Calvin cycle that can be used as food is glucose. Glucose is a simple sugar that plants produce during photosynthesis. It serves as a source of energy for the plant and can also be used as food by animals and humans.

Is the Calvin cycle anabolic or catabolic?

Fermentation is usually used to refer to reactions which produce energy without using oxygen. These reactions involve the breakdown of food molecules eg glucose to release energy. Breakdown reactions are called catabolic reactions, so fermentation is catabolic and not anabolic.

Fermentation process does not produce any energy molecules, its purpose is to recover NAD's that were used in the Glycolysis to use them again in the next Glycolysis process. All Fermentation processes are the subset of a Catabolic reactions, although, their product do not include the release of energy as the other catabolic reactions do.

Also, Fermentation is an Anaerobic Respiration, which happens only in the cells that can not undergo the Aerobic Respiration.

How does energy flow through the environment?

Energy flows through an ecosystem in one direction, which is called the food chain. It's like a pyramid. At the bottom are producers. The producers contain the most energy gotten from the sun. The next are primary consumers. Consumers obtain energy by eating the producers The next layer are the secondary consumers. There may be another layer of consumers if there is enough energy in the system.

Sunlight --> producers (100% of the energy) --> primary consumers (10%)---> secondary consumers (1%)

The decomposers return some nutrients to the system are are active at all levels.

As you move up each level the energy decreases.

For example:

Kcal = Kilocalorie (energy) For example:

Grass, a producer produces 1,000 Kcal

The grass is eaten by mice or rats, the primary consumer and gets 100 Kcal

The mice or rat are eaten by ferrets, the secondary consumer and gets has 10 Kcal.

The ferrets are then eaten by owls, the apex consumer gets 1 Kcal which may not be enough to support the owls.

It can not go any further.

In an ecosystem the energy flow depends on the 10% law.That is when energy is being transferred from producers to consumers and from consumers to herbivores carnivores ,etc. only 10 %energy stored in the previous level is taken and used by the next Trophic Level.

energy flow (E) can be defined as the sum of metabolic production (P) and respiration (R), such that E=P+R.

Below is the energy flow in the ecosystem: sun - Producer - Consumer - Decomposers - Inorganic nutrient pool.

Is the Calvin cycle endergonic or exergonic?

Yes, the Calvin cycle is endergonic because it uses ATP molecules rather than creates them.

What is one of the compounds that is a direct output of the Calvin cycle?

One of the compounds that is a direct output of the Calvin cycle is Glyceraldehyde 3-phosphate (G3P). It is a product of the synthesis of carbon dioxide.

Why is photosynthesis so important to Earth atmosphere and Mankind?

The thing that makes photosynthesis so important to the earth and atmosphere and mankind is what we need to find this out for b-tech science.

Myself, sian young, Lauren wray, Chelsea Robinson :)

Full equation for photosynthesis?

The full equation for photosynthesis is: 6CO2 + 6H2O + light energy → C6H12O6 + 6O2. This equation represents the conversion of carbon dioxide and water into glucose and oxygen using sunlight as an energy source through the process of photosynthesis carried out by plants, algae, and some bacteria.

Photosynthesis generates ATP and NADPH during what stages?

Photosynthesis generates ATP during the light-dependent reactions (photophosphorylation) and NADPH during the light-dependent reactions (photolysis of water and reduction of NADP+ to NADPH).

During which stage of photosynthesis does carbon fixation take place?

Carbon fixation takes place during the Calvin cycle, which is the second stage of photosynthesis. In this process, carbon dioxide from the atmosphere is converted into organic compounds by using the energy obtained from light-dependent reactions.

Durning photosynthesis plants make food from carbon dioxide and what?

What Plants Need to Make Food

Plants make food from carbon dioxide and water during photosynthesis.

How does carbon dioxide help in photosynthesis?

Carbon dioxide is taken in through the leaves of the plant. Energy from the sun is used to extract electrons (in the form of hydrogen ions) from water, and these are added to carbon dioxide (a reduction reaction) to form the monosacchardie glucose--C6-H12-O6.

The first stable compound produced from CO2 in the light-independent reactions is?

The first stable compound produced from CO2 in the light-independent reactions of photosynthesis is called 3-phosphoglycerate (3-PGA). This compound is formed through the fixation of CO2 by the enzyme Rubisco during the Calvin cycle.

What substance is released from the stomata?

Stomata are small openings in a leaf to allow carbon dioxide to get in during the day and oxygen to get in at night. Both gases also pass out through stomata. Water vapor also passes out of stomata.

Compare the energy storage in photosynthesis to the energy storage in cellular respiration?

Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. Cellular respiration is the process in which an organism breaks down fuel to capture energy in a usable form (ATP).

So, the two processes cannot really be compared with respect to energy storage. Photosynthesis is an anabolic process (synthesis of glucose) while respiration is the catabolism of glucose to release the chemical bond energy of the glucose into an usable form (ATP).

Plants use light energy to rearrange the atoms of carbor and water into?

Plants use light energy to rearrange the atoms of carbon and water into glucose through the process of photosynthesis. This glucose serves as a source of energy and is used to build other organic molecules needed for plant growth and development.

Plants convert the energy of sunlight into the energy of motion carbon dioxide and water the potential energy of chemical bonds minerals kinetic energy?

Plants convert the energy of sunlight into chemical energy through a process called photosynthesis. This process involves transforming carbon dioxide and water into glucose (a form of chemical energy) with the help of minerals and enzymes. The glucose produced serves as a source of energy for the plant to carry out its metabolic functions.

How important is the ocean to the process of photosynthesis?

The ocean is essential for photosynthesis as marine plants, like phytoplankton, produce a significant portion of the Earth's oxygen through this process. Without the ocean, a vital part of the global carbon cycle would be disrupted, affecting oxygen production and overall ecosystem health.

How is energy transformed during photosynthesis?

Energy from sunlight is chemically bound into carbohydrates during photosynthesis. Plants use energy from sunlight, water, and carbon dioxide to assemble carbohydrates-- molecules made out of carbon (carbo-), hydrogen (hydrates). Plants give off oxygen because water is made out of both hydrogen and oxygen, but when plants make carbohydrates, they only use the carbon part of carbon dioxide, and release the oxygen (dioxide) back into the atmosphere, allowing us to breathe.

What kingdoms use photosynthesis?

Plants and algae are the main kingdoms that use photosynthesis to convert sunlight into energy. They contain chlorophyll, a pigment that captures light energy and initiates the process of photosynthesis. Some bacteria and protists also have the ability to perform photosynthesis.

Can animals do photosynthesis?

No, animals only carry out respiration. Only plants have photosynthesis. Although, there is a rare green sea slug, which is now being considered half plant and half animal because it carries out both respiration and photosynthesis.

How does the equation for cellular respiration compare with the equation for photosynthesis?

The equation for cellular respiration is C6H12O6 + 6O2 --> 6CO2 + 6H2O + energy.

The equation for photosynthesis is 6H2O + 6CO2 + Light Energy -> C6H12O6 + 6O2.

Cellular respiration does not require light energy, and photosynthesis does.

Organism that can make its own food using photosynthesis or chemosynthesis?

Plants, algae, and some bacteria are organisms that can make their own food using photosynthesis or chemosynthesis. Photosynthesis is the process by which plants and some other organisms use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen. Chemosynthesis is a process used by certain bacteria to convert chemicals into energy in the absence of sunlight.

True or false Photosynthesis and cellular respiration form a cycle that links organisms to each other and to their environment?

True. Photosynthesis is the process by which plants and some other organisms convert light energy into chemical energy stored in glucose, while cellular respiration is the process by which cells break down glucose into energy. These processes form a cycle where plants produce oxygen and glucose through photosynthesis, which is then used by animals in cellular respiration to produce carbon dioxide and energy, creating a linkage between organisms and their environment.

Are nadph and ATP produced by the Calvin cycle?

Yes, they carry energy between the light reactions and the Calvin cycle. ADP is phosphorylated into ATP at the ATP synthase while NADP is reduced by the electrons in the transport chain (it then becomes NADPH).

Why does the process of photosynthesis slow down in high temperatures?

High temperatures can denature the enzymes involved in photosynthesis, disrupting their ability to function properly. This can lead to a decrease in photosynthetic efficiency and a slowdown in the overall process. Additionally, high temperatures can cause plants to undergo stress responses, leading to a reduction in photosynthesis to protect themselves from damage.