What are the central ideas of Cells? • What are cells? – Cells are the smallest basic unit of living things. • What do they do? – Cells take in raw materials and making new substances. • Why do they do this? – In cells‚ organelles carry out activities to keep the organism alive. – E.g. synthesising proteins and fats‚ releasing energy from glucose. What are the central ideas of Movement of Substances? • What processes describe how substances move from one region to another? –
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Basic chemistry of a cell Properties of water – – – Life on Earth began in water and evolved there for 3 billion years before spreading onto land. Modern life‚ even terrestrial life‚ remains tied to water. All living organisms require water more than any other substance. Human beings for example‚ can survive for quite for a few weeks without food‚ but only a week or so without water. – – – Water is deceptively simple. It is shaped something like a wide V‚ with its two hydrogen atoms joined
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Nursing GE 150 Katy Lunger August 7th‚ 2014 Proteins are made up of groups of twenty different amino acids. In the average adult‚ twelve of those acids are made in the body‚ and the other eight we have to ingest through our food. Those eight are called the essential amino acids. Amino acids cannot be stored in the body‚ so we need to eat foods regularly that contain the essential amino acids. We get most of our high quality proteins from meat and dairy products (Trefil & Hazen‚ 2013). Carbohydrates
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| | |Make chlorophyll | |Nitrate (NO3-) |Make amino acids and nucleotides | |Iron(II) (Fe2+) |Part of haemoglobin which transport oxygen | Water Water provides an environment that • Has a fairly stable
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MICROBIAL NUTRITION Nutrition which is also called as nourishment or aliment is a provision to the cells and organisms with the materials necessary to support life. Here it deals with the nutrition in microorganism which is called as microbial nutrition. Nutrients may be divided into three general‚ often overlapping categories: Those that supply energy‚ those that supply carbon‚ and those that supply any and everything else. In this lecture we will consider nutrition from the point
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stop codons tell the tRNA to stop translating codons into proteins. They are essential in the process of producing proteins. 6. Describe the processes of transcription and translation in your own words‚ based on what you have observed in the Gizmo. Transcription: Protein synthesis process starts in the nucleus where DNA is found‚ which is a double chain of sugars and phosphates that are joined by pairs of nucleic acids. These are adenine‚ guanine‚ cytosine and thymine. For replication‚ DNA is unzipped
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protein is 226 amino acids long‚ has a molecular mass of 25 kDa and shares DNA and amino acid sequence as the C-terminus of the M and L protein. The M protein has a 55-amino acid extension to the S protein at its N-terminus‚ giving it a molecular mass of 31 kDa‚ while the L protein a further 108-119-amino acid extention to the M protein at its N-terminus and a molecular mass of 43 kDa. Virions and subviral particles contain all three proteins
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on Earth. Procedure: The charts below lists a portion of the amino acids found in the Cytochrome C protein of several different organisms. Use the chart to compare the amino acid sequence in humans to the sequences of the other organisms listed. For each organism‚ identify any amino acid that is different or missing when compared to the amino acids in the human sequence. 1. Click on the following link to open the activity chart: Amino Acid Sequences in Cytochome-C Proteins. 2. Compare the human/chimpanzee
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Loading up your day’s essentials with goodness from nature Protein is found in every single cell in the body. An important building block for bones‚ muscles‚ cartilage‚ skin and blood‚ high quality protein provides all of the essential amino acids needed by healthy adults and growing children. People who don’t get enough of this important macronutrient will lack energy‚ and they will see their muscles and immune systems weaken. To help people meet their daily protein needs‚ leading direct selling
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Milk is the probably the most nutritionally complete food found in nature. Whole milk contains vitamins (principally thiamine‚ riboflavin‚ panthothenic acid and vitamins A‚ B12 and D)‚ minerals (calcium‚ sodium‚ phosphorus‚ potassium‚ and trace minerals)‚ proteins (which include all the essential amino acids)‚ carbohydrates (mostly lactose)‚ and lipids (fats). Whole milk is an oil in water emulsion‚ containing approximately 4% fat dispersed as very small (micron sized) globules. The fat emulsion
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