Study Questions: Chapter 28 1.) Archaea and Bacteria are the oldest‚ structurally simplest and most abundant forms of life. 2.) Name and describe seven ways in which prokaryotes differ substantially from eukaryotes? Unicellularity- fundamentally single-celled Cell Size- can vary (large range changes with species) Nucleoid- lack a membrane-bound nucleus but rather a nucleoid region Cell Division/Genetic Recombination- binary fission (does not use spindle) and do not have a sexual cycle Internal
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distinguishes living things from nonliving matter. The continuity of life is based on reproduction of cells‚ or cell division. In unicellular organisms like amoeba‚ division of one cell reproduces the entire organism. Multicellular organisms depend on cell division for: — Development from a fertilized cell — Growth — Repair Cell division is an integral part of the cell cycle‚ the life of a cell from formation to its own division. CELL DIVISION RESULS
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Name___________________________________ Score________________ Section___________________________________ Date_________________ EXERCISE NO. 1a MITOSIS OBJECTIVES The students should be able to: 1. identify the different steps involved in mitosis and meiosis; 2. describe the behavior of the chromosomes during each stage of cell division; 3. identify specific events in mitosis and meiosis that allow the inheritance of traits and generation of variation. MATERIALS
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is doubling every year and the sulfur dioxide is increasing in the past decades and it is gathering in the atmosphere which is harmful for the O-zone layer and that is dangerous because then all over the world the ocean will be acidic and the human life will end forever because it would be the end of the whole food chain. Acid rain is becoming a problem because
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If people think about how times were back in the 1350’s compared to now you would see the gratefulness in people’s everyday life. Life back in the 1350’s was rough‚ especially during the Black Plague. The plague was unexpected and happened in a days just to last for years‚ killing thousands of people with excruciating pain cutting the population of England and multiple other countries. We the people of the United States are lucky to be clean and free of deadly viruses. The Black Plague was one of
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Everyday activities like driving‚ going to work‚ or walking down the street include some risk to your personal safety. Many workers commute long distances or have mobile jobs and contact with the public. Either through crime or circumstance‚ people and events can be unpredictable. You can’t avoid all risk but it isn’t wise to act without taking precautions. The best approach is to assess the risks involved with an activity and take the safety measures that are required and logical. Your best safety
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Animal Diversity The number of animal varieties familiar to us is vast as the animal world is diverse. Each distinct variety or type of animals is recognized by scientist as a species. Animals of most species are free-living forms but of others are parasitic in bodies of other animals or even plants. According to their habitats animals are divided into the following types Aquatic animals :- They live in water . Animals living in sea water are called marine & those live in river‚ponds‚streams
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helped us learn the factors that were involved in the growth of the bacteria that increased our study towards their genetic‚ physical and metabolic characteristics. We used Escherichia coli and Bacteriophage T7 to identify and analyze their identical life cycle and replication that was involved in their process of growth. As‚ growth for any bacteria means it multiplying by increasing in its size and quantity‚ which can easily be examined by measuring its cell mass and cell number. Whereas‚ Bacteriophage
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Our assignment is about how chromosomes separate and how cell division works through microtubules and histones. DNA in the nucleus is loose and not well defined into chromosomes because it is usually tightly coiled‚ but in the interphase nucleus the chromatin exists in two forms: loosely coiled form called euchromatin and tightly coiled formed called heterochromatin. These two types become more coiled to form the chromosome at the time of cell division. DNA is a bit loosely coiled in the euchromatin
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Vol II Issue X Impact Factor : 0.2105 ORIGINAL ARTICLE ISSN No : 2230-7850 Monthly Multidiciplinary Research Journal Indian Streams Research Journal Executive Editor Ashok Yakkaldevi Editor-in-chief H.N.Jagtap IMPACT FACTOR : 0.2105 Welcome to ISRJ RNI MAHMUL/2011/38595 ISSN No.2230-7850 Indian Streams Research Journal is a multidisciplinary research journal‚ published monthly in English‚ Hindi & Marathi Language. All research papers submitted to the journal will be double - blind
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