Which gas from the atmosphere is obtained by plants and used to build lipids?

Know about carbon and why it is called the element of life

carbon cycle, in biology, circulation of carbon in various forms through nature. Carbon is a constituent of all organic compounds, many of which are essential to life on Earth. The source of the carbon found in living matter is carbon dioxide (CO2) in the air or dissolved in water. Algae and terrestrial green plants (producers) are the chief agents of carbon dioxide fixation through the process of photosynthesis, through which carbon dioxide and water are converted into simple carbohydrates. These compounds are used by the producers to carry on metabolism, the excess being stored as fats and polysaccharides. The stored products are then eaten by consumer organisms, from protozoans to man, which convert them into other forms. CO2 is added directly to the atmosphere by animals and some other organisms as a by-product of respiration. The carbon present in animal wastes and in the bodies of all organisms is released as CO2 by decay, or decomposer, organisms (chiefly bacteria and fungi) in a series of microbial transformations.

Part of the organic carbon—the remains of organisms—has accumulated in Earth’s crust as fossil fuels (e.g., coal, gas, and petroleum), limestone, and coral. The carbon of fossil fuels, removed from the cycle in prehistoric time, is now being released in vast amounts as CO2 through industrial and agricultural processes, much of it quickly passing into the oceans and there being “fixed” as carbonates. If oxygen is scarce (as in sewage, marshes, and swamps), some carbon is released as methane gas.

• These organic compounds include the carbohydrates, lipids and proteins required by the organism for survival

Since autotrophs use carbon dioxide for photosynthesis, the levels of carbon dioxide within the organism should always be low

• In other words, carbon dioxide should always be at a higher concentration in the atmosphere (or water)
• This concentration gradient ensures that carbon dioxide will passively diffuse into the autotrophic organism as required
• In aquatic producers, CO2 can usually diffuse directly into the autotroph; whereas in terrestrial plants, diffusion occurs at stomata

Heterotrophs cannot synthesise their own organic molecules and instead obtain carbon compounds via feeding

Understanding:

•  Carbon dioxide is produced by respiration and diffuses out of organisms into water or the atmosphere

All organisms may produce the chemical energy (ATP) required to power metabolic processes via the process of cell respiration

• Cell respiration involves the breakdown of organic molecules (e.g. sugars) and produces carbon dioxide as a by-product
• The build up of CO2 in respiring tissues creates a concentration gradient, allowing it to be removed by passive diffusion

In autotrophs, the uptake of CO2 by photosynthesis may at times be balanced by the production of CO2 by respiration

• This is known as the compensation point, at which the net carbon dioxide assimilation is zero (intake = output)
  

Similarly, the amount of carbon dioxide in the environment will be determined by the level of these two processes:

• If there is more net photosynthesis than cell respiration occuring in the biosphere, atmospheric carbon dioxide levels should drop
• If there is more net respiration than overall photosynthesis occuring, atmospheric carbon dioxide levels should increase

  What gas is used to build lipids?

  Nitrogen is vital to the building blocks of life (e.g. nitrogen is a key element in amino acids, nucleic acids, and membrane lipids).

  What type of gas is released by plants to the atmosphere?

  Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis.

  Which gas is used by plants for their growth?

  However, the gas which is the most important for the growth of plants is carbon-di-oxide. Carbon-di-oxide is the main reactant in photosynthesis. It combines with water from the soil to manufacture Glucose and oxygen.

  What is the name of the gas produced by plants?

  Plants, during the process of photosynthesis, take up carbon dioxide from the atmosphere and use sunlight along with it to make their food. The gas produced as a result of photosynthesis is oxygen.