Biology 12 - The Cell
Part A: In ONE sentence, in the space provided, describe the function of the following organelles. Use point form. Use your own words. Paraphrase and condense the textbook definitions. DO NOT copy any definition or part of a definition. In the box to the left of each definition, make a sketch of the organelle. |SEE NOTES |1. cell membrane: control what goes in and out of cell, forms barrier with outside environment | | |2. cell wall: structural support in plant cells. | | |3. centriole: in animals, function in cell division | | |4. chloroplast: in plants, contain photosynthetic pigments that turn light, CO2 and H2O into glucose | | |5. chromosome: packaging of DNA in nucleus. Functions in cell division | | |6. cilia: on outside of cell, move materials past cells (e.g. in bronchi and kidney tubules) or used in locomotion. | | |7. cytoskeleton: internal framework of m.t. and m.f. that move substances in cell and anchor organelles. | | |8. flagella: used for locomotion in sperm cells and some single celled organisms | | |9. Golgi body: for packaging, modification, secretion of substances for export inside and outside the cell. | | |10. lysosomes: contain hydrolytic enzymes for digesting foods, destroy wastes, autodigestion | | |11. microfilament: fibrous protein filaments used for structural support (e.g. cytoskeleton) and anchoring. | | |12. microtubule: tubes of protein monomers used in cilia, flagella, cytoskeleton | | |13. mitochondria: make energy for the cell by converting O2 and glucose to CO2, H2O and ATP | | |14. nucleolus: site of rRNA production and ribosomal subunit assembly in nucleus. | | |15. nucleus: contains DNA, controls cell activities including cell division. | | |16. plastids: pigment containing vesicles in plants that function in photosynthesis. Most famous plastid is the | | |chloroplast. | | |17. ribosome: site of protein synthesis | | |18. rough endoplasmic reticulum: anchors ribosomes in protein synthesis, accepts and modifies newly transcribed proteins | | |and sends to Golgi apparatus | | |19. smooth endoplasmic reticulum: lipid synthesis, modification | | |20. vacuoles: large vesicles. In plants, function to store water and nutrients, help support plant due to Turgor | | |pressure | | |21. vesicle: membrane-bound sacs for transporting materials in, around, and out of the cell, also used for storage of |...
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