is a soft tissue found on most animals and is made of cells that contain protein filaments of actin and myosin that slide past one another‚ producing a contraction that changes both the length and the shape of the cell. It function to produce force there location on the body or according to the functions and roles they play. They are the cardiac muscles (muscles covering the heart)‚ the smooth muscles (muscles covering the intestine and blood vessels) and the skeletal muscles. Our major discussion
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development of the cells of the blood. It is a continuous regulated process of blood cell production that includes cell renewal‚ proliferation‚ differentiation and maturation. It is the process by which immature precursor cells develop into mature blood cells. The currently accepted theory on how this process works is called the monophyletic theory which simply means that a single type of stem cell gives rise to all the mature blood cells in the body. This stem cell is called the pluripotential
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CELL REPRODUCTION DNA is the cell’s genetic material; chromosomes are the carriers of this genetic information. In proka-ryotes‚ the chromosome is a single circle of DNA. In eukaryotes‚ each chromosome is a complex of DNA and histone proteins found in the nucleus. BINARY FISSION Prokaryotic cells reproduce via binary fission. In this process‚ DNA Is replicated‚ and the cell splits in two roughly equal parts‚ each with a copy of the cell’s DNA. EUKARYOTIC CELL CYCLE Eukaryotic cells reproduce
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principle‚ a purple onion cell is going to be bathed in different concentrations of salt (NaCl) water. Problem: How do solutions of various salt concentrations influence osmosis in relation to an onion cell? Hypothesis What will happen to the onion cell if it is placed in salt water? What will happen to the onion cell if it is placed in distilled water? If ..the onion cell is placed in salt water then... the cell will shrivel up The
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The purpose of this lab was to hypothesize about membrane traffic in lab‚ explain the differences between the solutions hypertonic‚ hypotonic‚ and isotonic and how they respond using the understanding of the cell membrane structure‚ types of transport mechanisms such as active‚ passive‚ diffusion‚ osmosis‚ and explain the movement of particles moving across the cell membrane. In this lab was divided into two parts. The first part was varying the concentration and the second part was varying the temperature
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Journey of a Red Blood Cell The Circulatory System is the main transportation for the body‚ made up of blood vessels‚ the blood and the heart. The blood is comprised of the red blood cells‚ white blood cells (lymphocytes and phagocytes which make up part of the immune system‚ engulfing invading pathogens)‚ platelets which help the blood to clot preventing infection all transported around the vessels amongst the plasma. The blood plasma contains dissolved substances including carbon dioxide‚ urea
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Blood Film Staining – Normal & Malignant Cells Case Study 1 Male 72 yrs Hb 77g/l (NR 130-180) RBC 2.23 x 10¹²/l (NR 4.5-6.5) MCV 88fl (NR 76-96) WBC 98.2 x 10/l (NR 4-11) Platelets 28 x 10/l (NR 150-400) A) Calculation of PCV (packed cell volume or haematocrit) PCV = RBC (cells/l) x 10¯¹² x MCV (fl) RBC = 2.23 x 10¹²/l MCV = 88fl or 88 x 10/l PCV = 2.23 x 88 x10 PCV = 196.24/1000 PCV = 0.196 (NR 0.4-0.54) B) Calculation of MCH (mean cell volume) MCH = Hb
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potential difference in voltaic cell. Aim: To investigate the effect of concentration of electrolyte of the potential difference in voltaic cell. Introduction: Chemical reactions involving the transfer of electrons from one reactant to another are called oxidation-reduction reactions or redox reactions. In a redox reaction‚ two half-reactions occur; one reactant gives up electrons (undergoes oxidation) and another reactant gains electrons (undergoes reduction). Voltaic cell is a device in which a
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Eukaryotic Cell Division Cells must continually grow and divide in order for an organism to grow‚ maintain its structure‚ and reproduce. Cell division involves the replication‚ or copying‚ of the complete set of hereditary information. It also involves the equal distribution of the genetic material in the resulting cells. The hereditary information of organisms is contained in large molecules called deoxyribonucleic acid‚ DNA. Objectives Upon completion of this laboratory
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observations are repressentative of cell division taking place in the oinon root tip. Firstly‚ this is because our numbers of the number of cells in each phase of mitosis are similar to the rest of the groups‚ so we can assume our results are most likely correct. We can also assume our calculations are right because we know that Interphase is the most active phase in the process of cell divison‚ which would agree with our calculations since we assume that approxiamtly 93% of cells are going though Interphase
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