Experiment 2: Food Tests Objective * To study the presence of reducing sugars. * To study the presence of protein. Introduction In this experiment‚ glucose‚ maltose‚ lactose and sucrose are used for testing reducing and non-reducing sugars. Glucose is monosaccharide while maltose‚ lactose and sucrose are disaccharides of carbohydrates. Monosaccharaides are the monomers which make up all other carbohydrates and cannot be broken into smaller molecules by hydrolysis. Disaccharides are
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Title : FOOD TESTS Aim : To determine whether given unknown solutions A‚B‚C‚D‚E‚F and G contain Reducing/NonReducing Sugars‚ Lipids‚ Proteins or Starch. Apparatus/Materials: - Bunsen burner - Solutions A‚ B‚ C‚ D‚ E‚ F and G (unknown) - Measuring Syringes - Stirring Rod - Beakers - Test tubes (7)plus holder and tray - Copper sulphate solution (CuSO4) - White dropping ray - tripod stand and mesh -stopwatch - Biuret͛s solution - Sodium Hydroxide solution (NaOH) (or Potassium Hydroxide
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Aim: To find out which samples consists of starch/ proteins/ reducing sugar/disaccharide out of 4 given samples A‚ B‚ C and D. Research Question: Out of the four given samples which sample consists of protein/ starch/reducing sugar/ disaccharide? What color changes will help to identify the contents of each sample when treated with iodine‚ biuret agent and benedicts solution? Theory and background information: What is a protein?1 Proteins are macromolecules‚ consisting of one or more chains
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Test for the Presence of Macromolecules Introduction In this experiment‚ we are trying to identify the presence of macromolecules in certain solutions. As in our daily lives‚ macromolecules are the essential nutrients that we have to take every day‚ therefore we would like to identify the types of macromolecules that contain in some of the food or solution in order to maintain a healthy life. There are four groups of macromolecules which are carbohydrates‚ lipids‚ proteins and
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TRIPLE SUGAR-IRON AGAR TEST Triple sugar-iron (TSI) agar test- designed to differentiate among the different groups or genera of the Enterobacteriaceae‚ which are all gram-negative bacilli capable of fermenting glucose with the production of acid a. Differentiation is made on the basis of differences in carbohydrate fermentation patterns and hydrogen sulfide production. To facilitate observation of carbohydrate utilization patterns- TSI agar slants contain lactose and sucrose (1%) concentrations
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Biuret Test Biuret Test • Biuret Test is a chemical test used to show/detect the presence of peptide bonds‚ which are the basis for the formation of proteins. Explanation In the presence of peptides‚ copper (II) ion forms a violet-colored coordination complexes in an alkaline solution. This test can be used to asses the concentration of protein because peptide bonds occur with the same frequency per amino acid in the peptide. According to Beer-Lambert Law‚ the intensity of the color and hence
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The Presence of Others April T. Augello Psy/285 April 17‚ 2014 Coretta Nelson The Presence of Others It is shown that people have the tendency to perform better when in a group this is called social facilitation. There have been other studies done contradicting this and with more difficult experiments it actually hurts a person’s performance in a group. As Zajonc stated; a state of arousal is linked to performance without the presence of others. When an individuals is faced with a more difficult
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statistics in the article‚ Nurses Perception of Family Presence During Resuscitation‚ written by Tudor‚ Berger‚ Polivka‚ Chlebowy‚ and Thomas (2014) include demographic information such as age‚ sex‚ and ethnicity; as well as information regarding the participants years of experience and current work area‚ along with participant’s personal experience‚ if any‚ with the resuscitation of a family member. The Family Presence Risk-Benefit Scale and Family-Presence Self-Confidence Scale included in the article
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Nursing Presence I recently had the privilege of being a caring presence during the last few weeks of my mother-in-law’s life. She was 80 years old and had been diagnosed with terminal thyroid cancer. There was no cure. Doctors informed her she had a very short time to live and she should go home and get her affairs in order. We spent quite a bit of time together during her last few weeks. Every day was a gift. She did a lot of talking and reminiscing. While I listened to her‚ I learned things
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Family presence during invasive procedures and resuscitation Study problem What problem was the study conducted to resolve? A research problem identifies an area of concern when a gap exists in the knowledge needed for nursing practice (Burns & Grove‚ 2003‚ p 55). Family presence (FP) during invasive procedures (IPs) and cardiopulmonary resuscitation (CPR) is considered a right‚ obligation‚ and natural event by some organizations‚ notably nursing (Blair‚ 2004). According to a survey cosponsored
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