Bio Notes 9/5/2012 * Biology- Study of living things * Characteristics of living organisms * Consist of one or more cells * Unicellular- one cell able to carry out life ex. Bacteria * Multicellular- Many cells‚ specialized cells * Observations with microscopes lead to Cell Theory‚ Robert Hook * All cells come from preexisting cells * All cells are similar in chemical composition * Chemical reactions occur within
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movement. Today the cells of many no longer maintain flagella but rather a similar short microtubule cilia. Cilia can be used to move cell and move fluids through water. In the bacterium‚ the chromosome consists of a single naked circle of DNA. In eukaryotes‚ each chromosome consists of a single linear DNA molecule and associated proteins. The chromosomes contain hereditary information used to direct synthesis of proteins. Similarities needed in
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SNC 2D3 CHAPTER TEST REVIEW- CELL DIVISION TOPICS: 1. Cell organelles: structure & function 2. Compare & contrast eukaryotes and prokaryotes 3. Diagrams: animal and plant cells 4. Compare & contrast animal and plant cells 5. Diagram: bacterial cells 6. Bacterial cells: structural features & functions 7. Identify the 2 types of reproduction in bacteria 8. Cell cycle 9. Mitosis 10. Cytokinesis in animals and plants 11. Calculate diploid‚ haploid number and chromosome numbers 12. Cancer:
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Prokaryotic cells are single celled organisms that were formed at the formation of the earth‚ so are the most basic life forms. The prokaryotes are organised in the ‘three domain system’ and include bacteria and blue-green algae. Prokaryotes live in many environments including extreme habitats such as hydrothermal vents‚ hot springs‚ swamps‚ wetlands‚ and the guts of animals. This is a diagram of a prokaryote cell and it shows that they are not very complex cells. They do not contain any membrane
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Answer Sheet: How are microscopic protest and fungi classified? (2 pages) | |Scientific Name |Classification |Habitat |Nutrition |Locomotion | | | |Group | | | | |Organism B |Penicillium |Fungus |Citrus fruit |Organic matter
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life and is responsible for all functions within an organism. There are many different kinds of cells‚ which pertain to certain life forms on earth carrying out certain specific functions. Cells can be separated into two categories prokaryotes and eukaryotes. Prokaryotes are typically found in unicellular organisms. They do not have a nucleus or nucleus bound organelles. Therefore their DNA‚ proteins‚ ribosomes and etc. are enclosed within the cell membrane‚ without any specific location. They reproduce
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living things are made of cells. All cells come from preexisting cells through a process called cellular division. There are two types of cells‚ eukaryotes and prokaryotes. Prokaryotes are very simple and small. They are unicellular and have no membrane bound organelles. Their DNA is found directly in the cytoplasm since they have no nucleus. Eukaryotes are much more complex and bigger. They have membrane bound organelles for specific functions. Some organelles inside eukaryotic cells include: the
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2. Biological Classification Classification The process of grouping living organisms into convenient categories based on simple characters is known as classification. 1. Two kingdom classification Carolus Linnaeus divided all living things into two kingdoms- Plantae and Animalia. 2. Five kingdom classification R.H. Whittaker divided all living things into five kingdoms- Monera‚ Protista‚ Fungi‚ Plantae‚ and Animalia. The main criteria for classification included o cell structure o thallus
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While we are typically aware of how these organelles function‚ how they evolved raises several questions. The main model for how eukaryotic cells evolved over time is the endosymbiont theory. This theory proposes that the organelles distinguishing eukaryote cells‚ evolved through symbiosis of single-celled prokaryotes. Several organelles that are in present day eukaryotic cells are thought to have been incorporated by this process. In particular‚
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Rashidah Abdul Rahim 3. Dr. Chew Bee Lyn Objectives: Introduction to cells‚ organelles‚ molecules; structure & function relationship; working of a cell Course contents are divided into 4 major sections: 1. Concept of a cell: Prokaryote‚ Eukaryote‚ Animal and Plant Cells; cellular organelles 2. Cell components (Structure & Function): Water and buffer‚ amino acids and protein‚ fatty acids and lipid‚ monosaccharide and carbohydrate‚ nucleotides and DNA‚ RNA‚ membrane and membrane transport
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