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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PERFECT SCORE BIOLOGY 2011 BAHAGIAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA PERFECT SCORE BIOLOGY 2011 Teacher’s Module 1 PERFECT SCORE BIOLOGY 2011 Paper 2 – Section A: Structural Questions 1. Marks Student notes Diagram 1.1 shows a somatic cell of an insect undergoing meiosis. Process X R: Centromere Q: Chromosome/ chromatid S: Nuclear membrane Diagram 1.1 (a) Label Q‚ R and S in Diagram 1.1. [3 marks] (b)
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Three light filters were used to cover the 250mL beaker. 1000mL 1000mL 250mL 250mL light light Figure.1 the system of the wavelength of light The blank cuvette was used to calibrate the device each time in this section of the experiment. DCPIP is the blue color substance that usually been used as a concentration indicator in the chloroplast. A 50μL of this substance was measured carefully by using 200μ micrometer and transferred it to the three different clean cuvettes. A three separate
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Photosynthesis Lab Report Introduction The lights are essential for photosynthesis and it plays a major role. All the food we eat and all the fossil fuel we use is a product of photosynthesis‚ which is the process that converts energy in sunlight to chemical forms of energy that can be used by biological systems. Photosynthesis is carried out by many different organisms but usually by plants and algae. All these organisms convert CO2 (carbon dioxide)
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