Essays Tagged: "Phosphate"

Phosphates

Phosphates may be created by substituting some or all of the hydrogen of a phosphoric acid by metals ... en atoms that are replaced, the resulting compound is described as a primary, secondary or tertiary phosphate. Primary and secondary phosphates contain hydrogen and are acid salts. Secondary and terti ... ith the exception of those of sodium, potassium andammonium are insoluble in water. Tertiary sodium phosphate is valuable as a detergent and water softener. The primary phosphates tend to be more solu ...

(3 pages) 41 0 3.0 Feb/1997

Subjects: Science Essays > Chemistry

Phosphates in Water Pollution

Chemistry: Water PollutionPhosphates in Water PollutionPhosphates may be created by substituting some or all of thehydrogen of ... gen atoms that are replaced, the resulting compound is described asa primary, secondary or tertiary phosphate. Primary and secondaryphosphates contain hydrogen and are acid salts. Secondary and tertia ... ith the exception of those of sodium, potassium andammonium are insoluble in water. Tertiary sodium phosphate is valuableas a detergent and water softener. The primary phosphates tend to bemore solubl ...

(3 pages) 64 0 4.0 Dec/1996

Subjects: Science Essays > Chemistry

The structure of the nucleic acids DNA and RNA.

e center is deoxyribose for DNA and ribose for RNA. The nucleotides are binded together between the phosphate of one and the sugar of the next. The bond used is a strong diester linkage. The strands a ...

(3 pages) 106 0 0.0 Apr/2003

Subjects: Science Essays > Biology

DNA lab write-up. Includes Introduction. Contains materials used in lab, and the steps taken.

y is.DNA's structure was discovered by Watson and Crick in 1953. DNA is a double helix made up of a phosphate unit, deoxyribose sugar, and nitrogen bases. The bases are made up of 2 different types of ... nitrogen atoms; the Pyrimidines contain 2, therefore receiving the term Nitrogen Base. Together the phosphate unit, nitrogen unit, and deoxyribose sugar make up a nucleotide. The nitrogen base always ...

(3 pages) 66 1 3.7 Aug/2003

Subjects: Science Essays > Biology

Genetics

, guanine (G), thymine (T), or cytosine (C). DNA is made up of three components: an organic base, a phosphate molecule, and a sugar molecule. These four are linked to each other in a "genetic code" se ...

(6 pages) 120 0 1.7 Mar/2004

Subjects: Science Essays > Biology

Effects of Enzyme Rate by Variables of Enzyme Concentration, Substrate Concentraion, Temperature and pH

determine the effects of different environments affecting the rate of reaction, PNPP (p-nitrophenyl phosphate) + H20 ? PNP (p-nitrophenol) + H3P04. This reaction is catalyzed by the enzyme phosphatase ... ironmental conditions for the enzyme, phosphatase, as it catalyzes the reaction PNPP (p-nitrophenyl phosphate) + H20 ? PNP (p-nitrophenol) + H3P04 under different conditions of enzyme concentration, P ...

(15 pages) 137 0 4.9 Apr/2004

Subjects: Science Essays > Biology

Determination of available phosphate in water spectrophotometric procedure

Letort VanessaStudent number: 2029474HEV 4031Kershaw PaulDETERMINATION OF AVAILABLE PHOSPHATE IN WATERSPECTROPHOTOMETRIC PROCEDUREAIMSThis laboratory session should enable the operator ... as an analytical technique.6. To use the spectrophotometer method to determine the concentration of phosphate in different natural waters and an unknown sample.7. To introduce the method of preparing ... in living organisms; it is phosphorus that moves energy from ATP to another molecule. Adenosine triphosphate is important in the storage and use of energy and a key stage in the Kreb's Cycle. Therefo ...

(22 pages) 83 0 4.5 May/2004

Subjects: Science Essays

Osmosis

embrane (fig.9.3, pg 220)1. The cell membrane is composed of 2 layers of PHOSPHOLIPIDS -"phospho" = phosphate "lipid" = fat· referred to as the "phospholipid bilayer"· phospholipids have ... middot; phospholipids have polar, water-soluble heads attached to long, nonpolar tails.· The phosphate heads are on the outside and the inside of the cell· The nonpolar tails lie inside ...

(2 pages) 39 0 4.3 May/2004

Subjects: Science Essays > Environmental Science

Vibrational data discussion on the Adsorption of Phosphate on Pt(111) and Pt(100) studied in situ FTIR spectroscopy

best systems to monitor. In a previous study, it was discovered that the nature and geometry of the phosphate species is dependant upon applied potential. Using cyclic voltammetry and in situ FTIR spe ... t upon applied potential. Using cyclic voltammetry and in situ FTIR spectroscopy, the adsorption of phosphate species on a single crystal platinum was studied. The pH range was between 1.03 and 12.7. ...

(3 pages) 14 0 0.0 Apr/2005

Subjects: Science Essays > Chemistry

Aerobic Respiration

f ATP formation. In this process potential energy is transferred from glucose (a monosaccharide) to phosphate bonds. This process is carried out in a series of reactions known as glycolysis, the Krebs ... ndrion. During the first steps of this stage, energy is required. Two ATP molecules each transfer a phosphate group to glucose, donating energy to it. This raises the energy level of glucose high enou ...

(5 pages) 42 0 0.0 Apr/2001

Subjects: Science Essays > Biology

HERBACIDE-RESISTANT PLANTS

sed to the herbicide, the plant would degrade it into harmless substances. In this case glycine and phosphate.Why it is made: This was made for the obvious reason of economical commercial farming. If ...

(1 pages) 959 0 0.0 Oct/2001

Subjects: Science Essays > Biology

The effects of Superphosphate on plants and the environment

perphoshate is a fertilizer produced by the action of reacting concentrated sulfuric acid on ground phosphate rock. Calcium sulfate is a considerable waste produce of this process.Ca3 (PO4)2 + 2H2SO4 ... is a considerable waste produce of this process.Ca3 (PO4)2 + 2H2SO4 → Ca (H2PO4)2 + 2CaSO4Superphosphate used world wide by as a fertilizer the farming industry and gardeners. It increases plant ...

(3 pages) 5844 0 0.0 Aug/2007

Subjects: Science Essays

Plant Photosynthesis Lab

Cellular respiration is a process whereby glucose is converted into molecules of ATP (adenosine tri-phosphate), which is used by cells in the plant as a source of energy for cell division, among other ...

(7 pages) 45 0 0.0 Feb/2009

Subjects: Science Essays > Biology > Plant Biology

Sedimentary Rocks

environment. Robert L. Folk wrote "Study of sediments is being pursued intensely by oil companies, phosphate, uranium, and iron mining companies in order to locate new deposits and explain the origin ...

(3 pages) 4 0 0.0 Oct/2010

Subjects: Science Essays > Earth Sciences > Geology & Geosciences

Beetroot Membrane

nd prevent water soluble substances leaving and entering the cell. They have two parts to them. The phosphate "head" is hydrophilic and the bottom part, two fatty, hydrocarbon "tails" are hydrophobic. ...

(8 pages) 9 0 0.0 Aug/2011

Subjects: Science Essays > Biology

Scientific Review of A Journal Related To The Discovery of Arsenic-based Dna In A Particular Strain of Bacteria, Published In December 2010

t support arsenic DNA is that arsenate diesters do not seem to have similar stability properties as phosphate diesters (Westheimer, 1987). In fact, arsenate diesters are noted to be completely hydroly ... senate diesters are noted to be completely hydrolysed in a short matter of time, unlike diesters of phosphate. This makes it difficult to be incorporated into the DNA of bacteria living in water. On t ...

(3 pages) 1 0 0.0 Nov/2011

Subjects: Science Essays > Biochemistry

Extraction of DNA from onions

performed on the DNA isolate, namely: Dische Test, Murexide Test, Wheeler-Johnson test and Test for Phosphate. Visible results were then noted.IntroductionDNA (deoxyribonucleic acid) was discovered in ... its low starch content, which allows the DNA to be more clearly seen. The salt shields the negative phosphate ends of DNA, which allows these ends to come closer so that the DNA can precipitate out of ...

(6 pages) 3 0 0.0 Mar/2012

Subjects: Science Essays > Chemistry