plant cells Part Function Nucleus Contains genetic material‚ which controls the activities of the cell Cytoplasm Most chemical processes take place here‚ controlled by enzymes Cell membrane Controls the movement of substances into and out of the cell Mitochondria Most energy is released by respiration here Ribosomes Protein synthesis happens here Extra parts of plant cells Part Function Cell wall Strengthens the cell Chloroplasts Contain chlorophyll‚ which absorbs light energy for photosynthesis
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The Production and Consumption of Sugar The production of sugar has shaped our world throughout the centuries. From its humble beginning‚ to its royal induction it has now made a household name as a necessity. It has changed our society into sugar addicts with a never ending urge for sweetness. Production of this craving has lead to an over abundant consumption. Consumption so great that is has defined humans through culture and history. The journey has marked the path of this once less then
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Extraction of DNA from Cheek Cells Gene Smith February 29th 2013 INTRODUCTION DNA‚ deoxyribonucleic acid‚ is the genetic material of every living organism and is found in the nucleus of eukaryotic cells. DNA is often called the ‘blueprint for life’ because it contains the necessary information to carry out all the living processes of the cell (1).The purpose of this lab was to extract DNA from human cheek cells. The isolated DNA could be used inmapping or sequencing‚ PCR‚ crime scene investigation
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feature that most clearly separates eukaryotes from prokaryotes is the presence of _______ in eukaryotic cells. A) ribosomes B) oxidative phosphorylation C) DNA molecules -D) a nucleus 2. Cytoplasmic organelles are - A) absent in prokaryotic cells; present in eukaryotic cells. B) present in both prokaryotic and eukaryotic cells. C) present in prokaryotic cells; absent in eukaryotic cells. D) absent in both prokaryotic and eukaryotic cells. 3. Eukaryotic chromosomes contain _______
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called cells’ this in itself unbeknownst to him‚ was the discovery of the fundamental unit of all living things. In 1838 a botanist called Schleiden derived the theory The basic unit of structure and function of all living organisms is the cell.’ Over 150 years later this can be regarded as one of the most familiar and important facts within the biological fields. Drawing of cork cells published by Robert Hooke 1665 The Cell itself and use of Cytology:
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P7 describe the three different energy systems and their use in sport activities What is ATP? ATP stands for Adenosine triphosphate. It is often referred to as the ‘‘molecular unit of currency’’. They transport energy within cells for metabolism. One molecule of ATP contains three phosphate groups. How ATP is produced in the 3 energy systems? The first system ATP is produced in is the Phosphagen System. This system is the quickest way to gain back ATP after intense exercise. In this process‚ no
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Solar Energy The use of solar energy is increasing throughout the world. Solar energy is used to make light‚ run computers and to conserve energy. Today we used fossil fuel to run factories and make electricity but little do the people know‚ one day we are going to run out of oil because it’s not a renewable source. Then what are we going to do ? We would have no other choice then to start using the sun for energy‚ so why not start now ? Solar energy is one of the world’s
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and Sugar - The Chemistry must be right Jansen‚ C. Gymnasium Felisenum‚ The Netherlands 14-04-2010 Summary Yeast can metabolize sugar in two ways‚ aerobically‚ with the aid of oxygen‚ or anaerobically‚ without oxygen. In this experiment yeast ferment sugars anaerobically. When yeast ferments the sugars anaerobically‚ however‚ CO2 production will cause a change in the weight of the sugar/yeast-solution. This raises a further question: What is the effect of different kinds of sugars on the
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Kinetic Energy: Consider a baseball flying through the air. The ball is said to have "kinetic energy" by virtue of the fact that its in motion relative to the ground. You can see that it is has energy because it can do "work" on an object on the ground if it collides with it (either by pushing on it and/or damaging it during the collision). The formula for Kinetic energy‚ and for some of the other forms of energy described in this section will‚ is given in a later section of this primer. Potential
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Helix Company produces several products in its factory‚ including a karate robe. The company uses a standard cost system to assist in the control of costs. According to the standards that have been set for the robes‚ the factory should work 780 direct labour-hours each month and produce 2600 robes. The standard costs associated with this level of production are as follows: | | Total | Per Unit of Product | Direct materials | $ | 53248 | $ 20.48 | Direct labour | $ | 8320 |
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