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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 rhymes with photosynthesis?

Some words that rhyme with "photosynthesis" are "emphasis," "paralysis," and "analysis."

Similarities between photophosphorylation and oxidative photophosphorylation?

The chemiosmosis theory postulates that living cells produce ATP from a proton gradient across a membrane by an enzyme called ATP synthase. Animals generate this proton gradient with the mitochondrial electron transport chain. When reductants (NADH, FADH2) give up their electrons to the electron transport chain, the electrons move to increasingly stronger oxidizing agents, using the released energy to pump protons across the mitochondrial inner membrane. Plants, however, generate the proton gradient directly with the photosystems and the photosynthetic electron transport chain. When the photosystem becomes excited, water is split into protons, oxygen and electrons. The electrons are then passed into the photosynthetic electron transport chain, which is analogous to the mitochondrial electron transport chain in that it also uses the energy of the oxidation reactions to pump protons across the thylakoid membrane. The end result is the same, however, because the proton gradient generates proton motive force, which is then used to synthesize ATP with ATP synthase.

What is the main point of photosynthesis?

The main point of photosynthesis is to convert sunlight into energy in the form of glucose, which plants use as food to grow and survive. This process also releases oxygen as a byproduct, which is essential for many other living organisms.

Why is the term light-independent reactions a misleading description of the Calvin cycle?

idk...but we have the same text book and im trying to figure out the same answer

-___-

Edit: If you don't have the answer, why are you posting? -.-

Because they do not require the presence of light to occur.

Process by which the carbohydrates manufactured by photosynthesis are metabolized by an organism for energy?

Carbohydrates produced through photosynthesis are broken down through cellular respiration to release energy in the form of ATP. This process involves glycolysis, the citric acid cycle, and oxidative phosphorylation. Glucose is ultimately converted to carbon dioxide and water, with ATP being generated along the way for cellular processes.

Where in the chloroplasts does photosynthesis occur?

Photosynthesis occurs in the thylakoid membranes of the chloroplasts. Light energy is converted into chemical energy in the form of ATP and NADPH in the thylakoid membranes during the light-dependent reactions of photosynthesis.

Where do the raw materials of a siver spoon come from?

Silver is typically mined from the earth as a mineral ore, primarily found in countries like Mexico, China, Peru, and Australia. Once raw silver is extracted, it undergoes a refining process to purify it before being used to create silverware such as spoons. Additional materials used in silver spoon production may include copper or other metals for durability and strength.

What is the catalyst for photosynthesis?

The catalyst for photosynthesis is sunlight. Sunlight provides the energy needed to drive the chemical reactions that convert carbon dioxide and water into glucose and oxygen in the presence of chlorophyll.

Classify photosynthesis and cellular respiration according to the metabolism?

Photosynthesis is an anabolic process as it builds complex organic molecules (like glucose) using energy from sunlight, converting carbon dioxide and water into carbohydrates. Cellular respiration is a catabolic process, breaking down complex organic molecules (like glucose) to release energy in the form of ATP, which cells can use for various functions.

How does cellular respiration depend on photosynthesis?

Aerobic respiration requires oxygen to produce energy and expels carbon dioxide. This ultimately depends on photosynthesis, because plants take the carbon dioxide out of the air and use it for photosynthesis, which expels oxygen into the air as waste.

Where do the products of the Calvin cycle go?

The products of the Calvin cycle, such as glucose, can be used by the plant for energy production, stored as starch for later use, or transported to other parts of the plant for growth and development. Ultimately, these products support the plant's metabolism and serve as building blocks for its structure.

Describe the steps of the Calvin Cycle?

1. 6 carbon dioxide molecules combine with six 5-carbon molecules forming twelve 3-carbon molecules. 2. The 12 3-carbon molecules are converted into high-energy forms. 3. 2 of the 12 3-carbon molecules are removed and the plant uses them to produce sugars, lipids, amino acids, and other compounds. 4. The 10 3-carbon molecules change back into six 5-carbon molecules, which combine with 6 more carbon dioxide molecules. The process starts over.

Which process removes carbon dioxide from the atmosphere rather than adding it?

There are several that remove carbon dioxide

  • photosynthesis
  • the dissolving of the CO2 into ocean water
  • formation of coral and crustacean shell
  • precipitation as carbonate compounds.
Processes that increase carbon dioxide concentrations are:
  • combustion of fuels
  • aerobic decomposition or fermentation
  • volcanos
Things that decrease the removal are those that counteract those items in the first list:
  • deforestation
  • warmer oceans
  • desertification
  • conversion of forest and farmland to urban areas.


Using ch2o as the general formula for a carbohydrate What is the overall equation for photosynthesis?

The overall equation for photosynthesis is: 6CO2 + 6H2O + light energy → C6H12O6 + 6O2. This shows the conversion of carbon dioxide and water into glucose and oxygen in the presence of light energy and chlorophyll.

What are the standard Rf values for pigments involved in photosynthesis?

The standard Rf values for pigments involved in photosynthesis are typically around 0.2-0.4 for chlorophyll a, 0.4-0.6 for chlorophyll b, and 0.8-0.9 for carotenoids. These values can vary slightly depending on the specific solvent system and chromatography conditions used.

Is the Atlantic Ocean getting bigger or smaller?

The Atlantic Ocean is gradually getting bigger because of the sea-floor spreading that is happening. Sea-floor spreading is the process in which new oceanic lithosphere is made. And this mostly happens at Mid-Atlantic ridges. This is the process in which magma from under the Earth seeps to the surface and gradually solidifies.

F.Y.I. they sift apart making magma rise from the earths manntle. The magma then turns into more crust that has been happining for mllions of years.

How is respiration useful?

Respiration is essential for living organisms as it is the process through which cells generate energy by converting glucose and oxygen into ATP, which is the energy currency of the cell. It also helps in releasing carbon dioxide, a waste product, from the body.

In photosynthesis the source of electrons is?

The electrons come from water.

In the light dependent stage water is split into hydrogen ions (H+), electrons and oxygen.

The electrons are passed on to chlorophyll, the H+ ions combine with NADP to form NADPH and the oxygen is released.

What processes release energy from glucose?

Glucose is broken down via a series of chemical reactions in a process called cellular respiration. The main processes that release energy from glucose are glycolysis, the citric acid cycle, and oxidative phosphorylation in the mitochondria. These processes generate ATP, the energy currency of cells.

2 products in photosynthesis?

photosynthesis is the process where plants make food. in scientific terms, its the process used by plants to convert the light energy from the sun into chemical energy that can be used by the plant to fuel the plants activities.

photosynthesis uses carbon dioxide and water and produces oxygen, and glucose(glucose)

What are the steps of Photosystem 2?

  1. Light energy is absorbed by chlorophyll and other pigments in the photosystem, exciting electrons.
  2. These excited electrons are passed through a series of electron carriers in the thylakoid membrane, creating a proton gradient across the membrane.
  3. The electrons ultimately replace those lost by chlorophyll through splitting water molecules, releasing oxygen as a byproduct.
  4. ATP is produced as a result of the proton gradient, which is used to power the Calvin cycle for glucose synthesis.

How do the two photosystems work together to capture energy from sunlight?

Photosystem 2 transports the electrons from water and oxygen and Hydrogen ions across the Thylakoid membrane. Photosystem 1 produces NADPH with the electrons being added to NADP. ADP is changed to ATP when the Hydrogen ions flow through ATP synthase. I hope this helps! :)

Compare and contrast the terms photosynthesis and cellular respiration?

2 ways alike:

both photosynthesis and respiration occur in organelles of plant cells.

both involve the flow of electrons through the cell membrane in order to harvest energy.

2 ways they are different:

Respiration produces energy, where as Photosynthesis requires energy

Photosynthesis takes place in chloroplasts, respiration takes place in mitochondria

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