GE6351 ENVIRONMENTAL SCIENCE AND ENGINEERING UNIT I ENVIRONMENT‚ ECOSYSTEMS AND BIODIVERSITY ENVIRONMENT DEFINITION: It is defined as the sum total of water‚ air‚ and the inter-relationship that exists among them and with the human beings‚ other living organisms and materials. SCOPE: As a subject it has a wide scope. It encompasses a large number of areas and aspects‚ which may be summarized as follows 1. Natural resources 2. Ecology and biodiversity 3. Environmental pollution and control 4. Social
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Drug and Alcohol Traffic Awareness NOTES (DATA) Final exam is 40 questions; need to get 32 correct to pass. Physiological Factors Motor vehicle crashes are the leading cause of death for all people from 6 to 33 years of age. The easiest way to group drugs and alcohol is by their similarities. Classifications and a few more common examples are as follows: central nervous system depressants (alcohol‚ sleeping pills‚ tranquilizers) ‚ central nervous system stimulants (nicotine‚ cocaine‚ amphetamines)
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Chemistry: It is the science concerned with the atomic composition of substances‚ elements and their interactions‚ and the formation‚ decomposition and properties of molecules. -Biological chemistry or Biochemistry is the biological or physiological chemistry of living organisms and of the chemical changes occurring therein. Structure of Matter: All living and nonliving things are composed of matter. Matter; is anything that occupies space and has mass. Mass is the amount of matter in an object
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________________________________________________________________________________ ANALYSIS OF FOOD AND NATURAL PRODUCTS LABORATORY EXERCISE Determination of total nitrogen in food and crude protein calculation (Kjeldahl method) ___________________________________________________________ Responsible person: Assoc.Prof. Ing.Kateřina Riddellová‚ Ph.D. CONTENT ______________________________________________________________________________________________________________________ Required
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1. The transfer of substances containing carbon between organisms and between organisms and the environment 2. The causes of variation and its biological importance. 3. Mean temperatures are rising in many parts of the world. The rising temperatures may result in physiological and ecological effects on living organisms. Describe and explain these effects. 4. Cells are easy to distinguish by their shape. How are the shapes of cells related to their function? 5. Enzymes and their importance in plants
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GCE MARKING SCHEME BIOLOGY/HUMAN BIOLOGY (NEW) AS/Advanced JANUARY 2010 INTRODUCTION The marking schemes which follow were those used by WJEC for the January 2010 examination in GCE BIOLOGY/HUMAN BIOLOGY (NEW). They were finalised after detailed discussion at examiners’ conferences by all the examiners involved in the assessment. The conferences were held shortly after the papers were taken so that reference could be made to the full range of candidates’ responses‚ with photocopied
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1. BIOLOGICAL CLASSIFICATION Aristotle’s classification - Aristotle was the earliest to attempt a more scientific basis for classification of organisms. - He classified plants into trees‚ shrubs & herbs and animals into two groups‚ those which had red blood and those that did not. Two-kingdom classification - In Linnaeus’ time Two Kingdom classification (Kingdom Plantae & Kingdom Animalia) was developed. Drawbacks of 2-kingdom classification Prokaryotes (Bacteria‚ cyanobacteria) and eukaryotes
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What is junk food ? Where does the attraction for junk food come from ? Junk food is a term used for any food item that is perceived to be unhealthy or to have poor nutritional value. For example‚ it includes hamburgers‚ pizzas‚ candy‚ sodas and all those food products known for being loved particularly by teens. In fact‚ if you read the list of ingredients of a food item‚ and you find sugar‚ salt or fat as a principal ingredient‚ you can consider this food item as a junk food product. Its nutritional value
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BIO1130 - Archean Eon Keywords - Shivan Desai Aerobic: Requiring oxygen to survive‚ and perform life functions. (Aerobe-Organisms that require oxygen for cellular respiration.) Aerobic respiration is a characteristic of eukaryotic cells‚ even though prokaryotic cells can use aerobic respiration as well. Helps produce allot of ATP. Example: Kreb’s Cycle. Anaerobic: Doesn’t require oxygen to survive and perform life functions. (Anaerobe-Organisms that don’t require oxygen to live)
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Standard Methods for the Examination of Water and Wastewater 5210 BIOCHEMICAL OXYGEN DEMAND (BOD)*#(1) 5220 CHEMICAL OXYGEN DEMAND (COD)*#(2) 5220 A. Introduction Chemical oxygen demand (COD) is defined as the amount of a specified oxidant that reacts with the sample under controlled conditions. The quantity of oxidant consumed is expressed in terms of its oxygen equivalence. Because of its unique chemical properties‚ the dichromate ion (Cr2O72–) is the specified oxidant in Methods
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