Chemistry PAT Question 1 Polyhydroxybutyrate (PHB) is a biopolymer with properties very similar to that of polypropylene, though has all the benefits that come with biopolymers. PHB was first introduced to the scientific community by the scientist Maurice Lemoigne in 1926. He noticed that to produce PHB you need particular micro-organisms such as Alcaligenes Eutrophus or Bacilius megaterium undergoing physiological stress in an apparatus such as an agar dish to allow the micro-organisms to multiply. In order to achieve this stress there is a restriction to the amount of nitrogen the micro-organisms can attain thereby altering its nutrition. This is quite an efficient method of production and the amount of the PHB polymer yielded is around 30-80% of the dry weight of the micro-organisms used.
Lab 3: Aseptic Technique and Culturing Microbes Task: A. Describe the difference between an obligate and facultative aerobe. The difference between the two is Obligate aerobe requires oxygen to be present in order to grow an organism. With Facultative aerobe the organism does not necessary need oxygen to survive. It can live and grown with or without oxygen.
Chelilim87 Lab Report Effects of Temperature PH and Cofactors on Enzyme Activity Introduction Enzymes are catalytic proteins they speed up chemical reactions without be changed up or altered permanently in the process. Various enzymes used for different methods, they act as catalyst by lowering the activation energy for the reaction. Enzymes have specific shapes in which they occur. Part of the conformation the active site of the enzyme, where the actual catalysis occurs in the cells. The specific molecule on which an enzyme functions is the substrate.
Approximately one‐third of the millions of gallons of water used in fracking returns to the surface, where it is either reused or trucked to treatment plants. More than half the states allow the open, dirt‐brimmed waste pits that collect toxic fluids to intersect with the water table, even though waste pits are connected to hundreds of cases of water
The PH/blood gas monitor is uses to gives accurate pH, pC02and po2 determination on the blood sample or other body fluids. Maintenance of pH meters and blood gas analyzers includes frequent adjustment of calibration and replacement of glass electrodes. These electrodes age and require increasing times to produce accurate readings. The glass pH electrode is the heart of the pH meter; it consists of a platinum wire immersed in a highly acidic buffer solution contained within a thin glass bulb. 15.
Properties of Water Property | Importance | Examples | Solvent | Metabolic processes in all organisms rely on chemicals being able to react together in solution. | 70-95% of cytoplasm is water. Dissolved chemicals take part in processes such as respiration and photosynthesis in living organisms. | Liquid | The movement of material around organisms both in cells and on a large scale in multicellular organisms requires a liquid transport medium. | Blood in animals and the vascular tissues in plants use water as a liquid transport medium.
c) Name 2 different methods of measuring pH of substances (in a laboratory)? • Probe and meter • Litmus paper 5. Explain the relationship between the natural pH of the skin and the action of: a) Microflora • The bacterial microflora on our skin are able to survive acidic conditions with a pH range 4-6. Our acidic skin protects us from harmful bacteria or pathogens, our microflora are able to breakdown the fatty acid molecules and thereby increase its
As sucrose moves out of the phloem sap and into surrounding cells (with energy), water flows out of them. This reduces the pressure in the sieve cells at the sink region (less sugar) and the water moves back to the phloem Perform a firsthand investigation to demonstrate the effect of dissolved carbon dioxide on the pH of water 1. Blowing through a straw into the water 1. High technology read the levels of water pH as the carbon dioxide from our breath was dissolved into the water Perform a firsthand investigation using the light microscope and prepared slides to gather information to estimate the size of the red and white blood cells and draw scaled diagrams of each 2. Red blood cell = 7-9 um (micro metres) 3.
Importance of biochemistry can be seen from the fact, that it is used in many aspects of daily life, like in clinical diagnosis, manufactured of various biological products, treatment of diseases in, nutrition, agricultural. Biochemistry helps one to understand the biochemical changes and related physiological alteration in the body. * List a balanced chemical equation for each of these chemical reaction types and explain how it is used in your example above As a simple example of how to balance an equation, let us take the reaction which occurs when a large excess of mercury combines with bromine. In this case the product is a white solid which does not melt but instead changes to a gas when heated above 345°C. It is insoluble in water.
Growth media refers to any liquid or gel that will support any microorganisms or cells to grow. In the BIOE160 class we are currently using the medium LB (Lysogeny Broth or Luria Broth) to grow E. coli (this type of bacteria is usually found in the lower intestine of warm blooded organisms). Microorganisms also need water, oxygen, an energy source, carbon source, nitrogen source, and micronutrients. There are four stations that you could see on a graph of the cell growth. The first phase is called the lag phase.