Essays Tagged: "Nitrogen cycle"

The Nitrogen Cycle

Nitrogen is an essential component of amino acids and nucleic acids, which are the building blocks o ... ial component of amino acids and nucleic acids, which are the building blocks of all living things. Nitrogen makes up most of the atmosphere, but the N2 in the atmosphere cannot be used by most organi ... atmosphere cannot be used by most organisms. Nitrogen fixation is the process by which atmospheric nitrogen is transformed into forms that are more usable in biological processes. Although life needs ...

(2 pages) 42 0 4.0 Feb/2004

Subjects: Science Essays > Biology

This describes the Nitrogen Cycle.

The Nitrogen CycleThe nitrogen cycle represents one of the most important nutrient cycles found in terre ... le represents one of the most important nutrient cycles found in terrestrial ecosystems (Figure 1). Nitrogen is used by living organisms to produce a number of complex organic molecules like amino aci ... er of complex organic molecules like amino acids, proteins, and nucleic acids. The largest store of nitrogen is found in the atmosphere where it exists as a gas (mainly N2). The atmospheric store is a ...

(3 pages) 52 0 3.7 Apr/2004

Subjects: Science Essays > Biology

Biogeochemical cycles

ance by the existence of four biogeochemical cycles, namely, the water cycle, the carbon cycle, the nitrogen cycle and the phosphorus cycle. These cycles are formed on the basis of various organic and ... phere which is harmful, as they cause diseases like cancer if the human skin is exposed to them.The Nitrogen Cycle: -Nitrogen is the most abundant gas in the atmosphere, occupying up to almost 78% of ...

(8 pages) 126 0 5.0 Apr/2004

Subjects: Science Essays

Matter Cycles

ergy does not cycle through an ecosystem, chemicals do. Among the many cycles of matter, the water, nitrogen, phosphorus, and carbon are the most important ones! These cycles are composed of atoms and ... life on Earth because it has the ability to form long chains to which other atoms can attach. So is Nitrogen since is the critical element in production of proteins, nucleic aids, and chlorophyll. Jus ...

(1 pages) 32 0 2.0 Sep/2004

Subjects: Science Essays > Environmental Science

Nitrogen Fixing Bacteria

Nitrogen is essential for all life on this planet, but most of it is in the air, making up about 78% ... of all organisms depends on the availability of mineral nutrients, and none is more important than nitrogen, which is required in large amounts as an essential component of proteins, nucleic acids an ... omponent of proteins, nucleic acids and other cellular constituents. There is an abundant supply of nitrogen in the earth's atmosphere in the form of N2 gas. However, N2 is unavailable for use by most ...

(4 pages) 24 0 4.0 Apr/2006

Subjects: Science Essays > Biology

The Nitrogen Cycle

78% of air is nitrogen (N2). Nitrogen is in DNA, protein, and other compounds. Like carbon, nitrogen passes along ... ses along food chans and circulates between biotic and abiotic enviroments.Most organisms can't use nitrogen in it's natural form. Plants can only use it in the form of nitrate (No3-)The Nitrogen cycl ... can only use it in the form of nitrate (No3-)The Nitrogen cycle has three pathways. Nitrification, Nitrogen fixation, and denitrification.Nitrogen fixation occurs from lightning and bacteria.1a) Nitr ...

(1 pages) 33 0 3.0 Oct/2006

Subjects: Science Essays > Chemistry

Etosha

the morning for their quest for food and survival. A chemical cycle that occurred in Etosha was the Nitrogen Cycle. Nitrogen fixation occurs when the thunderstorms pass through Etosha. In the soil, ba ... the bacteria decompose into ammonia again. Lastly, denitrification occurs when nitrate converts to nitrogen, which is released into the environment. These are the major abiotic and biotic factors wit ...

(2 pages) 3060 0 3.0 Oct/2001

Subjects: Science Essays > Biology

Hydrogen

plays an important part in powering the universe through both the proton-proton reaction and carbon-nitrogen cycle; stellar hydrogen fusion processes that release massive amounts of energy by combinin ...

(1 pages) 1255 0 3.0 Feb/2008

Subjects: Science Essays > Chemistry