Abstract The primary focus of this lab was on microscopy and simple stains. Crystal violet and Carbol fuchsine‚ simple staining components‚ were used to stain the slide in order to see the different microbes in order to determine their cellular shape and identify unknown ones by comparing. Introduction Bacterial cells are usually colorless because cytoplasm‚ for the most part‚ is transparent. Since the bacteria are colorless‚ it is almost essential to add a stain to make the bacteria more visible
Premium Bacteria Electric charge
cell fragility - Osmotic Hemolysis. Retrieved on July 4 2013 from‚ http://www.medicine.mcgill.ca/physio/vlab/bloodlab/eryfrag1_n.htm Reece‚ J.B. et al. (2011). Campbell biology (9th edition). Harlow: Pearson Education‚ Inc. Transport across- Membrane Lab‚ Retrieved on July 4 2013 from‚ http://course1.winona.edu/mgarbrecht/Membrane%20Lab.pdf Why Does Milk Form a Skin When it is Heated?‚ Retrieved on July 4 2013 from‚ http://www.wisegeek.org/why-does-milk-form-a-skin-when-it-is-heated.htm
Premium Osmosis Cell membrane Red blood cell
positive test for protein the colour of the substance would be pink or purple/violet d) In a positive test for lipids the substance would leave a translucent stain on the brown paper bag 2. The purpose of testing the four test tubes was to ensure that the colour change that occurred in the substance was due to a chemical change and not the substance being added to it. 3. The student saw a colour change happen because the heat causes the biuret to chemically react with the protein. The reaction should
Premium Green Nutrition Potato
plasma in the blood cells‚ the transportation of blood cells‚ mainly the plasma found in blood‚ also has a main job to play in the disposal of waste products‚ for example urea through the kidneys‚ and helps hormones through the body through the plasma protein albumin which is essential in carrying hormones like fatty acids‚ this helps the endocrine glands hormones to reach its target cells. The Regulation of blood in the body is very important as it acts as a pH buffer by maintaining body temperature
Premium Blood
monomers. There are four categories of biological macromolecules that provide energy and structure to living organisms and their cells. The four types of macromolecules are: · carbohydrates · lipids · proteins · nucleic acids · Compare the structure and function of carbohydrates‚ lipids‚ proteins‚ and nucleic acids. lipids Fat molecules are made up of carbon‚ hydrogen‚ and oxygen atoms. These macromolecules are made up of smaller molecules‚ one glycerol and three fatty acids‚ which is why fats
Premium Glucose Bacteria Protein
KATE FITZPATRICK YEAR TWELVE BIOLOGY TERM ONE _(www.happycow.net)_ "TO TEST THE EFFECTS OF ANTACIDS ON PEPSIN’S ABILITY TO DIGEST PROTEIN." _CONTENTS_ 1.0 Abstract Pg 2.0 Introduction · 2.1 Aim · 2.2 Background Information · 2.3 Hypothesis PG · Pg · Pg · pg 3.0 MATERIALS · 3.1 Equipment · 3.2 Chemicals PG · Pg · Pg 4.0 METHOD · 4.1 Variables · 4.2 Procedure PG · Pg · Pg 5.0 RESULTS · 5.1 Sample calculation · 5.2 Tables · 5.3 Graphs · 5.4 Photos PG · Pg · Pg · Pg
Premium Hydrochloric acid PH Gastric acid
African Diaspora and the World After reading the short story “Diaspora” by Joanne Hyppolite‚ I got a vivid understanding of how diaspora can have an effect on one’s identity. Over the past month we have studied many theories and concepts concerning race‚ gender‚ and politics. There are three theories that capture the essence of Joanne Hyppolite’s worldview as a Haitian growing up in America: intersectionality‚ identity‚ and diaspora. Individuals oftentimes experience the theory of Intersectionality
Premium African American Race Black people
chemical reactions that occur in perfect synchronization. Also‚ these reactions take place at an incredibly fast rate; however‚ without enzymes‚ these reactions could possibly take several years to complete. An enzyme is a macromolecule‚ generally a protein‚ that lowers the activation energy of a reaction without being changed by the reaction‚ and this causes the reaction to occur much faster than usual (Campbell et al.‚ 2014). The act of speeding of a chemical reaction is called catalysis‚ and molecules
Premium Enzyme Chemical reaction Metabolism
purification of proteins What are proteins? Proteins are the main building blocks of life. They are essential for the body and have many different roles . Proteins are made from sequence of amino acids. Protein structure is determined by their sequence of amino acids‚ which are linked by peptide link. Proteins are made from about 50 to 2000 amino acid residues. Figure 1 Why purify proteins? They are many reasons why a biochemist might want to purify a protein. For example to
Premium Protein Amino acid PH
Introduction Methionine and cysteine are both sulphur containing amino acids. Most proteins will contain one‚ or both of them at some point in the polypeptide chain. As such‚ many amino acids contain sulphur in some form‚ which is required in small amounts in the mammalian diet. Methionine has a thioether side chain‚ and cysteine’s contains a thiol group. These side chains exist as free thiols inside the cell‚ and are oxidised causing them to pair up and form disulphide bonds in an extracellular
Premium Amino acid Protein Glutathione