1. Cells 1.1 Describe the structure and function of animal cells to include: * cell membrane * Exhibits selective permeability, regulates the passage of material into and out of the cell. * Lipid membrane one factor responsible for the control of material into and out of the cell, in addition to the proteins in the membrane. * Hydrophobic interior prevents charged or v. Polar molecules from diffusing across membrane. Small non-charged can pass through * cytoplasm * nucleus:
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lo io yB io g oCSEC B Biologyy og Bi ol gy lo yB io g lo io og B ol Bi y Caribbean Examinations Council ® SYLLABUS SPECIMEN PAPER MARK SCHEME SUBJECT REPORTS Macmillan Education 4 Crinan Street, London, N1 9XW A division of Macmillan Publishers Limited Companies and representatives throughout the world www.macmillan-caribbean.com ISBN 978-0-230-48203-6 © Caribbean Examinations Council (CXC ®) 2015 AER www.cxc.org www.cxc-store.com The author has asserted their
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Area of the cell | Function of the cell | Cell-Cells are the basic building blocks of all living things. They provide structure for the body, and also take in nutrients from food and convert those nutrients into energy and carry out specialized functions. | In the human cell, firstly we have the red blood cells; these carry oxygen around the body from our lungs, to the rest of our body. The nerve cells carry nerve impulses to different parts of the body which carry electrical signals around the
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Derrick Warren Biology 108 November 8, 2015 BIOL 108 Worksheet 2 1. Define a cell. 2. Identify (list) the two basic types of cells. 3. Would you find proteins inside cells or cells inside proteins? (choose one answer) 4. What two things make osmosis a special type of diffusion? 5. What is a selectively permeable membrane? (Also called a semi-permeable membrane.) 6. Explain what happens to a cell when placed in isotonic, hypotonic and hypertonic solutions. 7. Explain the basic organization
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101 Dr. Ferdinand The cell is the basic unit of life for all living things, while the DNA is the design for all passed down characteristics in living things. Both the cell and DNA have been studied and linked to the evolution process. From the beginning of the eukaryote cell unto the prokaryote cell there has been changes and the same goes for DNA. Changes in DNA sequences has contributed to different yet similar species over great periods of time. The cell which first existed in its prokaryote
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The supporters of therapeutic cloning and stem cell research call for the end of genetically linked diseases such as diabetes and cystic fibrosis. Human DNA has been atomized into clonable portions. The possibility of designer babies is cherished by affluent parents. All these are the realities of our time, the results of stem cell research whose impact may be unpredictable. On the one hand, human cloning may open new horizons for stem cell research; on the other hand, all this fuss about genetic
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Cell Parts and Functions Table | Cell Organelle | Cell Function | Nucleus | Directs all cell activities "Brain or Control Center of cell" | Nuclear Envelope (Membrane) | Controls what passes in and out of the nucleus | Cytoplasm | Jelly-like substance found inside cell that acts as a medium for chemical reactions within the cell | Golgi Body (Apparatus) | Packages the proteins made by the ribosomes so they can be sent out of the cell. The UPS store of the cell | Mitochondrion | "powerhouse
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MINICHROMOSOMES: THE NEXT GENERATION TECHNOLOGY FOR PLANT GENETIC ENGINEERING Genetic transformation occurs frequently in nature in prokaryotes. The transfer of genes from one organism to another is termed horizontal gene transfer1. For example, bacteria can acquire virulence factors, as well as antibiotic resistance genes, which may lead to the breakdown of the efficacy of antibiotics. Horizontal gene transfers are rare in higher eukaryotes, but years ago scientists found that a pathogenic bacterium
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the bacterial cell wall contains a carbohydrate matrix linked together by short chains of amino acids. 12. Nuclear pores apparently permit the passage of only proteins inward and outward, but RNA only outward. 13. Mitochondria and chloroplasts are the other organelles besides the nucleus that contain DNA. 14. The Golgi apparatus and ER are organelles that participate in the synthesis and modification of enzymes targeted to the plasma membrane. 15. The principles of cell theory or cell doctrine include
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understanding the greater debate surrounding cloning. At the Roslin Institute in Edinburgh, Scotland, in July 1996, scientists produced the first animal cloned from an adult cell. Dolly the sheep was born early in 1997, shocking the scientific community and the world. Dolly was created through a process called cell nuclear replacement. A mammary cell of a six-year-old white Welsh Mountain sheep was transferred into the egg shell of a Scottish Blackface ewe (Calhoun Cash 2). Since Dolly’s birth, other species
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