Background An indicator is a halochromic chemical compound that is added to a solution to determine its pH. It is a chemical detector for hydronium ions. The indicator changes colour to show the pH of the solution. Some indicates are not very precise and only tell us whether the solution is acidic or basic. When the indicator is added to the solution‚ they bind to hydrogen or hydroxide ions. The different electron configurations of the bound indicator cause the indicator ’s colour to change.
Premium PH indicator PH Acid
Its texture is crisp when fresh; it can be eaten in several ways. Carrots have vitamin A which can increase our poor vision‚ including night vision. | Beetroot | Beetroots have a circular pointed shape and its color is deep maroon red. When it is raw‚ beetroots have a crunchy texture‚ however when it is cooked‚ it turns soft and buttery. Beetroots improve blood flood‚ lower blood pressure and better stamina. | Tuber vegetables are underground plant stems that swell to store nutrients. Different
Premium Cooking Nutrition Vegetable
threshold voltage. Neurotransmitters affect different types of smooth muscle differently‚ depending on the association of the smooth muscle with excitable cells. In general‚ acetylcholine increases the muscle cell’s permeability to calcium‚ while epinephrine decreases the cell’s permeability to calcium. The earthworm (Lumbricus spp.) gut can be dissected and examined in vitro using an organ bath and force transducer. This preparation is robust; it can remain active for several hours. In this experiment
Premium Cardiac muscle Skeletal muscle Muscle contraction
Lab 6: Isolation of Chromosomal DNA Mic 428L/ Section 001 Introduction: In biological research to address and eventually answer a multitude of questions‚ usually involves isolating chromosomal DNA. The purpose in this particular lab was to isolate chromosomal DNA from mutants grown and observed in lab 5 and then digest the DNA using a restriction enzyme. The fragments left from digestion will be ligated and then transformed into a strain of E. Coli DH5αλpir containing the pir gene pi product
Premium DNA Bacteria Molecular biology
www.maxpapers.com UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *0191634512* 0610/61 BIOLOGY Paper 6 Alternative to Practical May/June 2013 1 hour Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs
Premium University of Cambridge UCI race classifications Tour de Georgia
varieties 60 % Pinot Noir‚ 40 % Chardonnay Climate Conditions Moderate cool climate‚ annual average temperature 10 Celsius. Valleys can be very rainy and windy. Soil Composition Very Calcareous soil‚ limestone. The soil has perfect balance between permeability and the ability to store humidity from the rain in case of drought. Type of wine A dry sparkling Champagne. Character of the wine Fresh and complex. Has a taste of green apples and nuts. Food Harmony Pol Roger is good with for example oysters
Premium Chardonnay Wine Cheese
rocket‚ sorrel‚ bay leaves‚ bok choy‚ spinach‚ asparagus‚ parsley‚ eggplant‚ radicchio‚ snow peas 4 Classify each of the listed salads as either a simple or a compound salad. (Refer recipes TNZC‚ Chapter 5.) green salad‚ bean salad‚ tabbouleh‚ beetroot salad‚ Caesar salad‚ potato salad‚ rice salad‚ tomato salad‚ coleslaw‚ asparagus salad 5 Name four cooked vegetables that are commonly used for salads. 6 Name six food types commonly used as the base for compound salads. 7 What
Premium Salad
CORE BIOLOGY PRACTICALS You will need to know these practicals as the exam board may ask you questions based on them. Below is a summary of each one. Name of practical and independent & dependent variables Effect of caffeine on Daphnia heart rate Independent: caffeine concentration Dependent: heart rate of Daphnia Measuring the content of Vitamin C in fruit juice Independent: fruit juice Dependent: volume of juice required to decolourise 1cm3 of DCPIP The effect of temperature on cell membranes
Premium Petri dish Laboratory glassware Agar plate
Introduction The activities 3‚ 4 and 7 have been experimented. In inhibiting a Nerve Impulse‚ numerous physical factors and chemical agents can impair the ability of nerve fibers to function. In these activities they show this exactly. In these experiments‚ it showed the effects of various agents to nerve transmission. In testing the effects of ether‚ there will be a nerve that will be stimulated. The experiment is to see if ether has any permanent alteration in neural response of the nerve. I believe
Premium Action potential
QUESTION ONE Toyota South Africa has moved into a new era in vehicle manufacturing in South Africa as a fully-fledged member of the Toyota Motor Corporation (TMC) global production network. Following a five year multi-billion Rand plant modernisation and revitalisation programme Toyota’s Prospecton manufacturing facility‚ just south of Durban‚ boasts the latest in world class automotive manufacturing technologies. Many of these are proprietary TMC systems only recently released for use in Toyota
Premium Toyota Strategic management Hybrid electric vehicle