Biology- cell organelles assignment Animal cells: Introduction: An animal cell is called a eukaryotic cell; it has a cell membrane‚ cytoplasm and a nucleus. The cell surface is covered by a membrane only. The cell membrane is strong and keeps the cell together even though it is thin and flexible. The cell membrane also controls what goes in and out of the cell e.g. nutrients go in and waste comes out. The cytoplasm is inside the nucleus and it controls the cells activities. An animal is
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cell wall * Store starch * Give rise to terrestrial plants a) Desmids- uni c (bananas) b) Spirogyra- filamentous; green strands c) Chlamydomonas- biflagellated; stigma d) Volvox- colonial alga; biflagellated e) Euglena- chloroplast| Algae: Stigma; 1 flagellum; pellicle| Proto: cystostome 4. Baccillariophyta / Diatoms * Cell wall: pectin and silica * Planktonic * Produces DOMOIC ACID * Sediments; diatomaceous earth 5. Dinophyta / Dinoflagellates
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This process takes place in chloroplasts‚ which is a plastid that contains chlorophyll and involves two interlinked reactions‚ which are light dependent reactions and light independent reactions. Throughout our lab experiment‚ we focused on the affect access of light has on carbon dioxide during photosynthesis. Carbon dioxide levels decrease as oxygen levels increase and glucose is produced when light dependent reactions occur. Light energy is absorbed by photo pigments and is used to raise a electron
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energy is ‘light’ from the sun. This is absorbed by a green substance called chlorophyll in the leaf. Therefore‚ photosynthesis takes place in the chloroplasts which are present in the palisade cells (found near the top of the leaf.) (fig: 1 ) As chloroplasts contain a green pigment called chlorophyll‚ which absorbs light energy needed to make photosynthesis happen. The equation for this reaction is: 6CO2 + 6H2O+ light energy
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hydrogen to them. In prokaryotes instead of chloroplast they use their own cell membranes to do the job. Wavelength also has a role in photosynthesis because they have just the right amount of energy to excite chlorophyll electrons boosting them to a higher energy level. When summing everything up the reactants are carbon dioxide‚ water‚ and the suns energy and the process is light dependent and the Calvin cycle. The products include oxygen and glucose. Pigments serve as photosynthetic organisms that
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REQUIRES ATP 9. TRANSPORT PROTEINS 10. ENDOCYTOSIS 11. WATER WILL MOVE INTO THE CELL 12. CHLOROPLAST 13. GREEN 14. IN THE STROMA 15. H20 16. IT EXCITES ELECTRONS IN CHLOROPHYLL 17. Making sugar 18. pigment‚ then to chlorophyll A 19. WATER SPLITTING 20. ELECTRONS ARE PASSED DOWN DEPENDENT REACTIONS Lab 5 1. a. What is the name of the pigment that captures light? (2 points) b. Why does the pigment appear green? (2 points) --Answer below: A. Chlorophyll B. Due to wavelengths of light that
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dimension * Need for surface area explains the elongated nerve cells * Microvilli – long‚ thin projections (animal only) that increases SA and not volume Nucleus * Contains most of genes (other genes are located in mitochondria and chloroplast) * Nuclear envelope (lipid bilayer‚ double membrane): encloses nucleus and separates its contents from the cytoplasm * Pore complex: regulates entry/exit of proteins‚ RNAs and macromolecules * Nucleoplasm: the cytoplasm of the nucleus
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types in the soil that decompose organic dead matter Parasites that live inside the bodies of other organisms‚ sometimes harming the host Diverse Modes of Nutrition Some protists have photosynthetic organelles called chloroplasts Photosynthetic protists are abundant in oceans‚ lakes‚ and ponds Free floating Mutually beneficial associations with other organisms: solar energy captured by the protist is used by host‚ which shelters and
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of energy is known as respiration. Without respiration‚ photosynthesis would not be able to perform. The process of photosynthesis is able to perform its duties with the help of an organelle called chloroplast as well. Within the chloroplasts lie thylakoids‚ a membrane system that contains pigments which are used to capture light energy. Photosynthesis is also responsible for reducing carbon dioxide into glucose‚ because reducing power is present. Reducing power is made after electrons get excited
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Mesophyll cell of healthy onion leaf with normal shape nucleus(Nu)‚Nucleolus (NO) and number of chloroplasts (arrow)‚ (C): Cell of IYSV -infected leaf showing large size of the nucleus (Nu)‚dense aggregation and segmented chromatin (Ch) ; (D): Lyses of rough endoplasmic reticulum(rER) and nuclear membrane(NM ) producing many small vacuoles(V) ; (E): Elongated nucleus and lyses of mitochondria(M) and chloroplast (C) of infected cell and ( f ): Showing virus like particles (VLP) in cytoplasm adjacent plasma
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