UNIT 1: Lesson 1 Key Questions: 1. Magnesium consists of 12 electrons; 2 + indicates a loss of 2 electrons; therefore‚ it now has 10 electrons. 2. The isotope would not be useful for dating bones that are over a million years old because carbon-14 decay at a constant rate‚ with a half-life of 5730 years. Therefore‚ after 40‚ 000 years‚ les than 1% of the carbon-14 is left in the tissue. As a result‚ there is not enough of the isotope in the tissues to determine the age of the bones. 3. The four
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Methyl Red test shows which bacteria are creating stable acids through mixed acid fermentation of glucose. This helps to identify enteric bacteria by examining how they metabolise glucose. Every enteric bacteria first produces pyruvic acid from metabolism of glucose. A methyl red positive enteric bacteria‚ uses the mixed acid pathway when breaking down pyruvic acid to different acids‚ like lactic‚ acetic‚ and formic acids. The Voges-Proskauer test determines if there is acetoin found in a bacterial
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person were having a low metabolism‚ and are facing severe health issues due to it‚ such as obesity‚ heart disease and reproductive issues. This does not mean that everyone with low metabolism should be prescribed with this drug‚ because there could be an extreme imbalance in insulin or fat levels in the body. For example‚ if a person who is just above the normal weight and has not incurred any major injuries or procedures regarding their health as a result of low metabolism‚ the most effective method
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Section 6: Metabolism Reading: Chapter 6‚ concepts 6.1‚ 6.2‚ 6.3 and 6.4 Watch and learn: How do photosynthesis and cellular respiration relate to one another? http://youtu.be/0IJMRsTcwcg Cellular respiration http://youtu.be/Gh2P5CmCC0M Basic Key Concepts After completing the readings and practice exercises‚ students should be able to: Describe the two mechanisms of ATP synthesis. Describe the location‚ steps‚ and inputs and products of: glycolysis the oxidation of pyruvate the
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Objectives Learning about Conservation of energy Learning about transformation of energy Conservation – Preserving a substance. Metabolism Metabolism is a process in which you break down foods into calories and these are combined with oxygen to release the energy that your body needs in order to function/live. This is a very complicated bio-chemical process. Metabolism is essential for the energy for these functions: Breathing Circulating blood Adjusting hormone levels Growing and repairing
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and health. There are 2 classifications of nutrients these include Macro nutrients which is the bulk of what we eat and Micro- nutrients which are small amounts in a variety of foods we eat. The Macro nutrients include Carbohydrates‚ Protein and Lipids (fat). Micro-nutrients include Vitamins‚ Minerals and Water. The nutrient chosen is Carbohydrates. There are two types of Carbohydrates: Simple and Complex. The Complex Carbohydrates are known as the ‘good carbohydrates’. They are the types of carbohydrates
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information is embedded in DNA and transcribe RNA that exists in pores in the nuclear membrane. Endoplasmic reticulum (ER) is a network of sacs inside a membrane and is involved in protein and lipid syntheses. Two types of ER exist: smooth and rough. The golgi complez or golgi apparatus packages proteins and lipids for transportation. Mitochondria in cells vary depending on the function of the cell. They can vary in numbers from hundreds to thousands. They are the source of energy for cells through aerobic
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the catabolism of amino acids rather than glucose. In times of dietary oversupply‚ the nitrogen of amino acids is eliminated via transamination‚ deamination‚ and urea formation and the carbon skeletons are generally used to feed into carbohydrate metabolism. These ketone bodies have a great propensity to decrease urinary pH. Acid base balance in the body is therefore disrupted. Glomerular filtration rate will be increased and a decrease in renal tubular reabsorption of calcium resulting in calcium
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Sample essays and suggested plans for content 1. The process of diffusion and its importance in living organisms Definition Fick’s Law Types of diffusion e.g. Facilitated diffusion‚ osmosis Gas exchange in unicells‚ fish‚ mammals and plants Digestion and absorption of products Exchange of materials between blood in capillaries and tissues e.g. placenta Transpiration‚ root pressure‚ water and ion uptake by roots Translocation and mass flow hypothesis Osmoregulation by blood and kidney‚ unicells
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ASSIGNMENT #1 NASC 1083 BIOLOGICAL SCIENCE Rubyna May L. Espiritu Sir Adrian Guinto BSEDSS 1-1N November 15‚ 2012 The Characteristics of Life There are many properties or the signs of life that the living organisms have. In the book of biology of Mrtinez and Nazareno‚ there are nine characteristics of life just said and those are : a. Living things are highly organized and
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