the reagents‚ using Gilson pipettes etc‚ study and try to identify chemical tests for food compounds. Materials and methods Reagents Monosaccharaides (glucose‚ fructose‚ maltose)‚ sucrose (disaccharide) Starch (polysaccharide)‚ egg albumin (protein) DCPIP‚ Vitamin C Olive oil + Sudan III Ethanol (highly flammable) Iodine solution (irritant) Benedicts reagents KOH + CuSO4 HCl (irritant) Honey solution Apple juice solution Milk solution Precautions Gloves Safety goggle Lab coat Gilson + tips 20 test tubes
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Section 1 These questions are about your investigation with DCPIP and measuring Vitamin C. You should use your own results‚ your graph/s and what you remember about doing your investigation to answer these questions. All answers should be in the spaces provided. 1 What were you trying to find out in your investigation? Complete the blank spaces in the sentence below. I was trying to find out if the ……………….……………………………………………….. ………………………………………………………………………...……… depends on the …………………………………………………………………………………………………
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Experiment IV: Study of Krebs cycle using Mitochondria from Mung Bean Seedlings INTRODUCTION The mitochondria is a very important organelle in the plant cell because it carries out very important cellular reactions in the cell like the Krebs cycle and oxidative phosphorylation which is how the plants produce ATP from the pyruvate produced through glycolysis (Meyer and Millar‚ 2008). Glycolysis produces a net of 2 ATP for the plant which is not enough for the cell to function while the Krebs cycle
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plants. The photosynthesis process rate varies from different wavelengths and intensities of light. This lab will evaluate the optimal wavelengths and degrees of intensity during photosynthesis when chloroplast is exposed to light. The mixtures of DCPIP with water‚ PO4 buffer‚ and chloroplast will be prepared in a number of cuvettes. The cuvettes were tested individually at different wavelengths and intensities to find the optimal rate of photosynthesis by using a spectrophotometer‚ measuring the
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Spinacia oleracea‚ is a highly adaptable organism‚ with the ability to grow virtually universally. While S. oleracea can tolerate a relatively high range of growth temperatures‚ it generally thrives in cooler environments of approximately 20ºC. As global warming becomes an increasing issue of global concern‚ it is becoming increasingly essential to determine the effects environmental temperature change will have on these globally depended upon organisms. The process of photosynthesis allows plants
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The effect of differing wavelengths of visible light on the photosynthetic activity of Beta vulgaris Introduction Photosynthesis is a crucial biological process that occurs within the chloroplasts of plant cells where CO2 + H2O + Sunlight C6H12O6 + O2. The chloroplasts use light‚ an electromagnetic energy source‚ to produce food for the plant in the form of sugar molecules. During photosynthesis‚ the excited electrons from the light pass through proteins in the electron transport chain (ETC)‚ where
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the effect of camouflage on a predator-prey relationship [F4-Chapter 8] Q2: To study the relationship between the concentration of CO2 and the rate of photosynthesis [F4-Chapter 6] 2004 Q1; To determine the % of vitamin C in fruit juices using DCPIP solution [F4-Chapter 6] Q2: To estimate the size of the bird population [F4-Chapter 8] 2005 Q1: To determine and compare the energy content in white bread and peanuts [F4-Chapter 6] Q2: To determine the concentration of the solution which will
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ups Identifying food groups in unknown solutions Aim The aim of this experiment is to identify different food groups within several different unknown solutions. This will be carried out by placing the unknown solutions into separate test tubes and using different chemical indicators to see if any reactions occur. Each food group will act different when the chemical indicator is added‚ some will change colour while others will separate. Introduction Food is a vital source of energy that is
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1 Lifestyle‚ health and risk ■ HSW 1.1: Criterion 5 – Water as a liquid at room temperature Criterion 5: Analysis and interpretation of data to recognise correlations and causal relationships Consider the water molecule‚ its properties and its physical state. Water has a relative molecular mass (Mr) of only 18‚ yet it is a liquid at room temperature. This is surprising; it contrasts with other small molecules‚ which are usually gases at such temperatures. Examples include methane (CH4
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source of Zinc for plants. Since it’s very soluble in water‚ it also is the most hazardous making it a significant part of this investigation. Therefore I will plan to set it as my independent variable where it will act out as an enzyme inhibitor. DCPIP (DichlorophenolIndophenol) is used to measure the rate of photosynthesis in this experiment. It reduces during the light dependent reactions instead of NADP+ indicating photosynthesis. The experiment uses Spinach leaves as their greenery indicates
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