BACTERIA. CLASSIFICATION Bacteria are extremely small and some can be just seen with the naked human eye. They are much smaller than eukaryotic cells but are still very complex despite their size. .the cell is surrounded by a cell membrane that enclosees the bacteria cell. They are single celled organisms. Bacteria are prokaryotic cells and therefore do not have a nucleus and do not have a lot of organelles like: mitochondria‚ chloroplasts‚ and other organelles that are usually found in eukaryotic
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Yr 12 Biology Summary Notes Rangitoto College 2006 STRUCTURE AND FUNCTION IN CELLS Achievement Standard 90464 – Biology 2.8 – Describe cell structure and function TYPES OF CELLS • PROKARYOTIC CELLS = more primitive‚ unicellular‚ have no organised nucleus‚ no membrane-bound organelles‚ genetic material is 1 circular DNA molecule‚ can have tiny extra rings of DNA called plasmids‚ all have cell walls e.g. bacteria and blue-green algae • EUCARYOTIC CELLS = unicellular
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SCI 2020 Study Guide for Exam 1 on September 14‚ 2012 Ch. 14 How did reading books by Lyell and Malthus influence Darwin’s development of the theory of evolution? - From Lyell‚ Darwin saw that species gradually changed over time o Example: the Finches - From Malthus‚ Darwin perceived the idea of natural selection o Survival of the fittest o Those species that possessed physical‚ behavioral or other attributes survived over those who didn’t
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10. What are 3 examples of helpful bacteria? 11. What do bacteria need to grow and reproduce? 12. How do we inhibit growth of bacteria? 13. How do bacteria reproduce (sexual and asexual)? 14. Protists move in a variety of ways – explain 3. 15. How do protists get their energy? 16. How do protists reproduce?
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the three types of symbiotic relationships. 21. What is an opportunistic pathogen? 22. What is the difference between an endotoxin and exotoxin? 23. The evolution of antibiotic resistant strains of bacteria is on the rise. Explain why? Chapter 28: Protists Information that you should know‚ and questions that you should be
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1. Plant Nutrition Nine macronutrients of plants: C‚ H‚ N‚ O‚ P‚ S‚ K‚ Ca‚ Mg Components of soil: Horizon a (topsoil): humus‚ leaf litter‚ decaying matter Horizon b (middle): minerals but no humus Horizon c (bottom): rock Most common nutrient deficiencies: N‚ P‚ K 2. Transport of Water and Minerals in Xylem Xylem transports water and minerals from the roots to the leaves Plant cells include: cell wall‚ plasma membrane‚ nucleus‚ chloroplasts and central vacuole Soil to root Water is absorbed
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Exercise 11: The Fungi Fungi are achlorophyllous‚ absorptive heterotrophic mode of nutrition. Water molds (Oomycota) and chytrids were fungi because of filamentous body structures/cell wall. More closely related to amoeboid and flagellated protists. True fungi: some unicellular‚
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The Observation of organism in a drop of pond water (Paramecium) under LPO and HPO Compound Microscope Doreenda A. Sabao BS Biology I-A .Lab 1 August 01‚ 2013 INTODUCTION A pond is a body of freshwater smaller than a lake. Ponds are naturally formed by a depression in the ground filling and retaining water. Streams or spring water is usually fed into these bodies. They can also be man-made ponds which can be created by damming a stream‚ digging a hole. Ponds are usually
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Earth’s crust‚ etc.). The second kind of cell is the eukaryotic cell. These cells contain a nucleus as well as nucleus bond organelles (for example; Golgi apparatus‚ mitochondria‚ chloroplasts‚ etc.). Eukaryotes cells exists in four kingdoms; fungi‚ protists‚ animals and plants. Funguses are decomposers and are vital for cycling nutrients in the environment. Animals and plants differ in cell
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Difference | Eukaryotic | Prokaryotic | Shape/Size | Larger | Smaller | Complexity | Membrane bounded organelles | No membrane bound organelles | Nucleus | Bounded membrane with DNA | DNA in a region (nucleoid) | Kingdom | Plants‚ animals‚ fungi‚ protists | Bacteria and archaea | Reproduction | Sexual reproduction – mitosis | Asexual reproduction – binary fission | * Similarity: plasma membrane‚ cytosol‚ chromosomes‚ ribosomes | Surface Area to Volume Ratio * Metabolic requirements
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