What test reagent is most sensitive in detecting sugar in urine? What are the possible positive results (color) and its interpretation. 2. What test could be used to differentiate: sucrose and lactose? Explain. a. glucose and starch? Explain. b. glucose and fructose? Explain. c. galactose and fructose? Explain 3. An unknown carbohydrate gave a brick red precipitate when tested with Fehling's reagent, turned red when reacted with Seliwanoff's reagent, and quickly gave a red precipitate when reacted with Barfoed's reagent. What conclusions can be made about this carbohydrate? 4. Illustrate with equation the reaction of glucose, galactose, maltose & lactose with osazone test. Sketch the crystals formed for each of the following sugars examined under the microscope.
Nucleotides
It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Nucleic Acids
Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.
1. What test reagent is most sensitive in detecting sugar in urine? What are the possible positive results (color) and its interpretation.
2. What test could be used to differentiate: sucrose and lactose? Explain.
a. glucose and starch? Explain.
b. glucose and fructose? Explain.
c. galactose and fructose? Explain
3. An unknown carbohydrate gave a brick red precipitate when tested with Fehling's reagent, turned red when reacted with Seliwanoff's reagent, and quickly gave a red precipitate when reacted with Barfoed's reagent. What conclusions can be made about this carbohydrate?
4. Illustrate with equation the reaction of glucose, galactose, maltose & lactose with osazone test. Sketch the crystals formed for each of the following sugars examined under the microscope.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps