We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Nobody downloaded yet

Biological Molecules - Lab Report Example

Comments (0) Cite this document
Carbohydrates include such compounds as saccharides, or sugars, and polysaccharides such as starch. Lipids are typically molecules whose structure is mainly hydrocarbon in nature, and includes such things as…
Download full paper
Biological Molecules
Read TextPreview

Extract of sample
Biological Molecules

Download file to see previous pages... Because the functional groups exhibit characteristic chemical reactions that involve color changes, they can be used as the basis of both qualitative and quantitative assessments.
Mash a sample of the imitation crab meat in some water with the homogenizer. Remove some of the liquid and place it in a clean test tube or other suitable glass container. To another such container add the equal amount of plain water. Test both solutions with diabetic glucose tests strips. Add Benedicts solution to both containers and heat using water bath. Observe color change identifying presence (or absence) of glucose in solution. A positive result with the water extract indicates that the imitation crab meat contains additional glucose and should be avoided by Granny.
1. Samples should be heated in Benedicts test to increase the rate of the reaction between the sugar and Benedicts reagent. Without heating the reaction may proceed only very slowly, which may lead to a false result.
2. The copper ions in the copper sulfate of Benedicts reagent bond non-covalently or coordinate to the aldehyde functional group of glucose and similar sugars. This facilitates an oxidation of the organic molecule to the carboxylic acid, and is accompanied by the formation of atomic copper by reduction of the copper ions. The presence of copper atoms in the solution is responsible for the observed color changes. Similarly, the copper ions in Biurets solution coordinate to an amide linkage of protein to form a large complex ion that is highly colored. The IKI reagent in the starch test can be thought of as a complex of potassium ions and iodide ions that have captured molecules of iodine (I2). The multiple -OH groups presence on the starch molecules bond non-covalently to the iodine molecules to form a very dark colored complex.
3. If KOH or NaOH were omitted from the Benedicts test, no result could be expected. The hydroxide ion must be present ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Biological Molecules Lab Report Example | Topics and Well Written Essays - 500 words”, n.d.)
Retrieved de https://studentshare.org/miscellaneous/1564820-biological-molecules
(Biological Molecules Lab Report Example | Topics and Well Written Essays - 500 Words)
“Biological Molecules Lab Report Example | Topics and Well Written Essays - 500 Words”, n.d. https://studentshare.org/miscellaneous/1564820-biological-molecules.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
Osmosis Lab Report
Osmosis and diffusion are the very essential at both the organ and cellular levels. Osmosis is the movement of the solvent molecules from the region of higher concentration to the region of lower concentration through a semi permeable membrane.
4 Pages(1000 words)Lab Report
Ester Synthesis
Esters are categorized to have pleasant smells that are the core reasons for the pleasant fragrant in fruits and flowers. Examples of these esters are methyl butanoate which is mostly found in the liquids of pineapples and the famous isopentyl acetate which is found in the oil of bananas.
3 Pages(750 words)Lab Report
In the present study, the unknown microorganism present in the Probiotics, maozrella cheese and camembert cheese were analyzed using the biochemical tests such as catalase, oxidase, latex agglutination, Gram’s staining and string test. From the biochemical results it was identified that the unknown microorganisms present in the given samples of probiotics, mozeralla cheese and camembert cheese were Lactobacillus sp, Streptococcus sp and Penicillium sp.
6 Pages(1500 words)Lab Report
Enzymes lab report
The results show that lactase activity is low when temperature is low at 00C but improves with increasing temperature up to 370C after which activity drops sharply. Low activity at low temperature is due to low activation energy exhibited by
5 Pages(1250 words)Lab Report
The composition of enzyme is primarily a complex protein molecule and function by catalyzing specific biochemical changes within the bodies of animals and plants such as digestion of food in animals and photosynthesis in plants. Enzymes acts on substrates and
8 Pages(2000 words)Lab Report
(GC Instrument Experiment) Determination of Ethanol Concentration in Biological Fluids using Gas Chromatography
It was established that the ethanol concentration of the unknown was 13.805 ± 1.31% w/v. High concentrations of ethanol (ranging between 0.3 and 0.4%) in the blood often lead to fatal consequences that include death.
3 Pages(750 words)Lab Report
Detection of Organic Molecules in Unknowns
This experiment aimed at finding the concentrations of unknown substances using varying concentrations of standard solutions. Five different starch concentrations ranging from 0 to 100 µm/ml were prepared to make a total volume of 2 ml. The concentrations of the
1 Pages(250 words)Lab Report
Mass Spectrometry and HPLC of peptides
Soft ionization converts the macromolecule under investigation in the presence of a polar volatile solvent into tiny droplets, which are further desolvated into smaller droplets hence forming molecules that are
3 Pages(750 words)Lab Report
Clinical immunology lab report (ELISA)
Examples of immunoassays include enzyme-linked immunosorbent assays (ELISA), immunofluorescence, immunohistochemistry, immunoprecipitation and Western Blotting. These tests are used in hospital settings to
6 Pages(1500 words)Lab Report
Lactase Enzyme Activity
According to the author of the report, enzymes are capable of regulating the rate at which chemical reactions occur without being altered in the process. To be precise, enzymes achieve this function by lowering the activation energy necessary for the reaction to occur in cells.
6 Pages(1500 words)Lab Report
Let us find you another Lab Report on topic Biological Molecules for FREE!
Contact us:
Contact Us Now
FREE Mobile Apps:
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us