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Free research essays on topics related to: water bath

11 results found, view free essays on page:

  • Petri Dishes Bacteria Cells
    1,566 words
    In this lab we observed the growth of bacteria in a conjugation and transformation experiment. We expected the mating plate of the conjunction to grow and the bacteria on the transformation plates to grow also. We also practiced using aseptic techniques to clean the lab benches and to keep the bacteria from being contaminated from outside bacteria. This lab will take a total of 2 days because of the observations that need to be made. The parts of this paper will explain the procedure and the obs...
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  • Test Tubes Water Bath
    2,835 words
    ... ial's and Methods The first experiment involved examining the effect of temperature on aerobic respiration of germinated pea seeds. The students testing the effect of temperature, will be divided into two groups. The first group is Student Pair A. They will test the effect of 10 C, 20 C and 30 C temperatures on pea respiration rate. The second group is Student Pair B. They will test the effect of 40 C and 70 C temperatures on pea respiration rate. For both groups, the first procedure calls f...
    Free research essays on topics related to: experimental, water bath, test tubes, tap water, tube
  • Amino Acids Dna Molecule
    1,152 words
    Introduction Deoxyribonucleic acid is contained in all cells. The structure of DNA makes gene transmission possible. Since genes are segments of DNA, DNA must be able to make exact copies of itself to enable the next generation of cells to receive the same genes. The DNA molecule looks like a twisted ladder. Each "side" is a chain of alternating phosphate and deoxyribose sugar molecules. The "steps" are formed by bonded pairs of purine-pyrimidine bases. DNA contains four such bases the purines a...
    Free research essays on topics related to: protein synthesis, dna molecule, amino acids, cell walls, genetic code
  • Test Tube Water Bath
    622 words
    Purpose: To investigate the effect of temperature on the fermentation of glucose by bakers yeast. Hypothesis: If to separate tubes of 20 % glucose solution with 1 mil of yeast is added to battery jars filled with 20 and 38 c water then the warmer one will cause the yeast to ferment at a quicker rate. Materials: - 2 test tubes (100 mm. Long x 11 mm. I. D. ) - 2 ones-hole stoppers (size 00 w/ 3 mm. Hole) -Glucose -Bakers yeast suspension -Balance -Molding clay -Submersible test tube racks -Pins -M...
    Free research essays on topics related to: test tube, water bath, three minutes, warm water, degrees c
  • 2 O 2 H 2 O
    385 words
    For Informational Purposes Only. The authors & distributors do not advocate the use of illegal drugs and assume no liability for the use or misuse of this information. The procedures described are dangerous and should not be attempted by persons inexperienced in Organic Laboratory techniques. This formula is exemplified for MDA (3, 4 -Methylenedioxy- phenylisopropylamine); substituting N-methyl form amide results in MDMA or N-methyl MDA (Ecstacy). To a cooled mixture of 34 g 30 % H 2 O 2 and...
    Free research essays on topics related to: extract, 2 o 2, water bath, vacuum, h 2 o
  • Investigation On The Enzyme Trypsin
    2,197 words
    An Investigation determining a factor affecting the rate of digestion of gelatin by the protease trypsin. Introduction An enzyme is a biological catalyst, which speeds up reactions. An example of this in the human body is trypsin (a protease produced in the pancreas and used in the stomach), which catalyses the digestion of gelatine, a protein. For this investigation, a photographic film will be the source of the gelatine. I will be able to identify when the gelatine is digested, when the photog...
    Free research essays on topics related to: ph levels, independent variables, test tube, water bath, activation energy
  • Rate Of Reaction Bunsen Burner
    2,301 words
    For this investigation I am going to investigate the effect of the concentration of an enzyme, in this case Amylase, on the time taken for the enzyme to fully breakdown the substrate, which in this case is starch. The reason why these two enzymes have to be used is because each enzyme is designed specifically to break down only one substrate as each enzyme is made of a protein that causes it to be a specific shape, in this case the enzyme Amylase can only break down starch to dextrin. I am going...
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  • Degrees Celsius Test Tubes
    1,993 words
    Effects of Temperature, pH, and Gelatin on Bromelain Introduction Bromelain is an organic catalyst that speeds up the rate of chemical reactions. Bromelain is used in this experiment to catalyze the break down of proteins and is called a proteolytic enzyme. Enzymes enable reactions to occur at a lower temperature and energy levels. This allows many reactions to occur inside living organisms that would otherwise have been impossible to take place. This enzyme is found in fruits, leaves, and stems...
    Free research essays on topics related to: degrees celsius, ph levels, five minutes, reaction rate, test tubes
  • Amino Acids Dna Molecule
    1,152 words
    Introduction Deoxyribonucleic acid is contained in all cells. The structure of DNA makes gene transmission possible. Since genes are segments of DNA, DNA must be able to make exact copies of itself to enable the next generation of cells to receive the same genes. The DNA molecule looks like a twisted ladder. Each side is a chain of alternating phosphate and deoxyribose sugar molecules. The steps are formed by bonded pairs of purine-pyrimidine bases. DNA contains four such bases the purines adeni...
    Free research essays on topics related to: amino acids, dna molecule, genetic code, cell walls, protein synthesis
  • Potassium Hydroxide Carbon Dioxide
    1,400 words
    Finding out about photosynthesis Date: Partners: Aim: To be able to explain the conditions necessary for photosynthesis and to compare experimental results to a control. To recognise tests for some inorganic substances found in plants. Materials: h A plant with variegated leaves in a pot which has been in the dark for 24 hours prior to the class h Iodine h Alcohol h Potassium hydroxide h Hotplate (or Bunsen burner with tripod) h Petri dish h Funnel h 2 flasks (500 ml) h 2 beakers h Aluminium foi...
    Free research essays on topics related to: potassium hydroxide, petri dish, dark green, carbon dioxide, water bath
  • Carbon Dioxide Liquid Nitrogen
    2,011 words
    PURPOSE: In this particular laboratory experiment, we are going to determine the molar mass of an unknown gas, from the gas density. We are also going to use gas density, along with the kinetic molecular theory, to explain the behavior of gas filled balloons. Finally, we are going to demonstrate the effects of temperature and pressure changes of gasses. PROCEDURE: We are using the experimental procedure as described in our laboratory manual. University of Wisconsin River Falls Laboratory Manual ...
    Free research essays on topics related to: liquid nitrogen, cold water, carbon dioxide, bell jar, natural gas

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