Biological Macromolecules Lab Cells‚ the fundamental units of life‚ are composed of various combinations of organic macromolecules: carbohydrates‚ lipids‚ proteins‚ and nucleic acids. This lab exercise is designed to show you the qualitative tests commonly used to detect their presence. Objectives Test for the presence of monosaccharides by using the Benedict’s test Test for the presence of starch‚ a polysaccharide‚ by using the Lugol’s iodine test Test for the presence of lipids by using the
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Biology assignment - In Vitro Fertilization. In Vitro Fertilization (IVF)‚ is the procedure whereby human babies are conceived‚ not in the womb but in a test tube or a Petri dish. This procedure has become one of the greatest developments in the world of medical technology. In Vitro Fertilization has given infertile couples the chance to conceive and bear a child from a full term of pregnancy. Without this procedure‚ their infertility would render them childless. There are many aspects of
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Anti-bacterial property of Duhat (Syzgium Cumini) Bark extract John Francis M. Vicera January‚ 2012 Ms. Santiago Abstract Humans especially for those who live in dirty community are prone to get disease such as cholera‚ diarrhea‚ fever and many more because there is an unseen specimen called bacteria. Bacteria such as e-coli and staphylococcus are the most common bacteria that can cause illness to mankind. According to the World Health Organization (WHO) 3 out of 10 people are infected by bacteria
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INVESTIGATION OF THE INHERITANCE OF THE ROSETTE GENE IN BRASSICA RAPA By: Justine Poorbaugh Foundations of Biology 2 Laboratory Thursday 2:30 PM Professor Cheek April 21‚ 2011 ABSTRACT The Brassica rapa is a rapid growing plant that has a standard form and a mutant rosette form. Relative to normal plants‚ the rosette form is shorter and takes longer to flower. The mode of inheritance of the rosette gene was tested by crossing two true-breeding plants‚ one of each form. The F1 generation
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that is already allowing scientists to test new drugs and figure out the cause of birth defects. The process is very delicate because scientists must work with a four to ten day old blastocyst to get the stem cells. They put the stem cells into a petri dish along with proteins and enzymes. The stew of cells‚ enzymes‚ and proteins is what helps regenerate the bad tissues that cause diseases. “Blastocysts can also potentially be created from a donor egg”(“Embryonic Stem Cell Research:The Facts‚ Page
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Planarian Behavior – Biology II Honor Overview Work in pairs for this lab. You will directly observe planarian movement. You will then formulate a hypothesis about planarian behavior‚ and propose an experiment to test this hypothesis. Your experiment should be focused on one of the various types of stimuli listed below. Your experiment must collect both qualitative and quantitative data. Think about how you can increase the sample size of your observations to minimize the effect of confounding
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the pH of the mixture after each addition by dipping a glass rod into the liquid and touching it to a sheet of universal indicator paper. Continue adding drops of sodium hydroxide until the mixture is neutral (pH 7). 8 Pour the mixture into a petri dish and use a glass rod to ensure it is evenly spread over the surface. Allow to dry overnight on a sunny windowsill or radiator‚ or you can dry the plastic in a drying cabinet. Read more:
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tested varying wavelengths of light to see which would cause photosynthesis to occur to the greatest degree in spinach leaf disks. The spinach leaves were hole-punched to form 60 disks. These disks were placed in a solution of sodium bicarbonate and dish detergent to create a vacuum and remove all of the oxygen from their environment. This vacuum caused the disks to sink‚ and floating of the disks would indicate that photosynthesis has occurred because they had produced oxygen. Light was filtered
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corresponding to the sucrose solution they are bathed in then the hypothesis will be supported. Materials • Sucrose solution • Water • Potato • Beaker • 5 boiling tubes • Stoppers • Razor blade • Apple corer • Paper towel • Petri dish • Scales • Forceps Method 1. Label 5 boiling tubes with the concentration of sucrose solutions provided 2. Place 15cm3 of
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spores germinate and form hyphae (Campbell‚ 64) Species of the genus Sordaria share a number of characteristics that are advantageous for genetic studies. They all have a short life cycle‚ usually 7-12 days‚ and are easy to grow on nutrient agar in dish cultures. All kinds of mutants are easily induced and readily obtainable with particular ascospore color mutants. These visual mutants aid in tetrad analysis‚ especially in analysis of intragenic recombination. ( Campbell 72) A common lab use
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