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What is the positive and negative effects of acids in the home and in the environment?
Wiki User
∙ 13y ago
Acids turn litmus paper red, and alkalis turn it blue. ... Acid rain can have terrible effects on a forest. The acid takes away important minerals that the forests need to survive
Wiki User
∙ 13y ago
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Why amino acids exists as zwiter ion?
It is an ion with overall neutral charge.But in its chain , there exists two parts where one part has a negative charge and another side has an equal positive charge to nullify the negative charge. This ion becomes positively charged in acidic medium and negatively chargedin alkaline medium. Eg amino acids etc.
What color develops when ninhydrin react with amino acids?
These are the amino acids that will yield positive result to the ninhydrin test: Non-polar amino acids: Glycine, Alanine, Valine, Leucine, Isoleucine, Phenylalanine, Methionine, Tryptophan Polar Neutral Amino acids: Serine, Cysteine, Threonine, Asparagine, Glutamine, Tyrosine Polar Acidic Amino Acids: Aspartic acid and Glutamic acid Polar Basic Amino Acids: Histidine, Lysine, Arginine
What is the function of gram positive?
Gram positive bacterias have a cell wall which will stain in violet color.The following characteristics are generally present in a Gram-positive bacterium.cytoplasmic lipid membrane teichoic acids and lipoids are present, forming lipoteichoic acids which serve to act as chelating agents, and also for certain types of adherence.thick peptidoglycan layercapsule polysaccharides (only in some species) if present, it contains two rings for support as opposed to four in Gram-negative bacteria because Gram-positive bacteria have only one membrane layer.flagellum (only in some species)The Gram positive cell wallThe Gram positive cell wall is characterised by the presence of a very thick peptidoglycan layer, which is responsible for the retention of the crystal violet dyes during the Gram staining procedure. It is found exclusively in organisms belonging to the Actinobacteria (or high %G+C Gram positive organisms) and the Firmicutes (or low %G+C Gram positive organisms). Bacteria within the Deinococcus-Thermus group may also exhibit Gram positive staining behaviour but contain some cell wall structures typical of Gram negative organisms. Imbedded in the Gram positive cell wall are polyalcohols called teichoic acids, some of which are lipid-linked to form lipoteichoic acids. Because lipoteichoic acids are covalently linked to lipids within the cytoplasmic membrane they are responsible for linking the peptidoglycan to the cytoplasmic membrane. Teichoic acids give the Gram positive cell wall an overall negative charge due to the presence of phosphodiester bonds between teichoic acid monomers.
Differences between gram positive and negative bacteria in table?
Best Answer By: Mohamed Ahmed A. XeriyeBiology Teacherthey are different so many aspects among :1. the peptidoglycan layer is absent from grma-ve bacteria while its present in gram +ve bacetria.2. techoic acids are present in gram - positive, and absent from gram - negative bacteria3. the outer membrane is absent from gram - positive, and present in gram - negativethere are so many differences between them.
What are the positive result of alkaloidal reagents?
These are reagents which precipitates alkaloids.Alkaloids contain basic nitrogen so form salt by uniting with acids as, phosphomlybdic acids, tungstic acids etc.
What charge do acids have?
Acids have nether a positive or negative charge, but instead have a pH value.
What are the good and bad effects of acids and alkalis on the people and the environment?
strong acids are corrosive which can burn our skin. strong alkalis are dangerous as if they go in our mouth our mouth will swell up .
A substance that completely dissociates into its ions in solution?
A strong electrolyte is a substance that dissociates completely into positive and negative ions in its solution. Examples of strong electrolytes that are acids are hydrochloric and nitric acids.
Do all amino acids have a pKR?
No, most of the R-groups of the 20 standard amino acids have strong bonds that do not allow them to be ionizable. All charged amino acids are ionizable (positive and negative) but only Cys and Tyr have pKRs for the rest.
What are negative health effects from nitrogen oxide?
Nitric oxide (NO) is very toxic by inhalation.
What are positive and negative effects of acid rain?
If acid rain has got negative affects, it also has some positive ones. 1) It helps 2 slow down global warming. 2) It can lessen the affects of pollution. 3) It reduces green house gases. Negative: 1) Destroys crops 2) People sick. 3) Animals die. 4) Surroundings get dangerous and harmful BB Thanx
Why do bacterial cell walls carry a negative charge?
The Gram positive bacterial cell wall is made up of thick peptidoglycan layer which is rich in Teichoic acids. These teichoic acids are negatively charged because of presence of phosphate in their structure. The Gram negative bacteria have an outer membrane composed of phospholipids and Lipopolysaccharides. The lipopolysaccharides impart a strongly negative charge to surface of Gram negative bacterial cells.
When acids in water what positive ion is produced in excess?
When acids in water hydrogen positive ion is produced in excess. It is this hydrogen positive ion that gives acidity of a solution.
What is the difference between hydroxide and hydronium?
when base react with water it decomposes to give hydroxide OH negative and acids react with water to produce hydronium ion H3O positive.......
What are acids considered to be what because they are positive?
Cations
Do acids have positive charges or negative charges?
All acids have positive charge. Both mineral and carboxylic acids ionise to some degree in solution producig hydrogen ions H^(+). , Notice they are plus/positive. It is these ions that are the avid component on a substance. E.g. Mineral acid H2SO4 = 2H^(+) + SO4^(2-) e.g. Carboxylic acid CH3COOH = CH3COO^(-) + H^(+) The pH scale indicates the number of H^(+) ions in a solution. The lower the number , the more H^(+) ions.
Why does protein exist as a zwitterion?
Because proteins are made up of amino acids and amino acids have both an NH2 group and a COOH group. Amino acids are zwitterions because the NH2 group protonates and the COOH group deprotonates, giving a molecule where one part has a positive charge and another has a negative charge.
