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Organelles
Biology
| Question | Answer |
|---|---|
| Organelles. | Specialized structures in a cell that carry out functions. |
| Semi-permeable (allows certain things in and out of the cell), helps maintain homeostasis. | Cell/Plasma membrane. |
| Granular, fluid-like material, all organelles are suspended in it. | Cytoplasm. |
| Contains DNA, controls the cells' metabolism and reproduction. | Nucleus. |
| Selectively permeable double structure that surrounds the nucleus, has pores. | Nuclear membrane. |
| Structure within the nucleus that is involved in the synthesis of the RNA, produces ribosomes. | Nucleolus. |
| Intercellular transport. | Endoplasmic Reticulum. |
| Cite of protein synthesis. | Ribosomes. |
| Releases energy for the cell, site of aerobic respiration, ATP is made here. | Mitochondria. |
| . (Post office/shipping center), shipping, packaging, processing, exporting. | Golgi Body/Complex/Apparatus |
| Contain digestive enzymes, break down worn out cell organelles, kills bacteria. | Lysosome. |
| Stores food and wastes. | Vacuoles. |
| Cell division, animal cells only. | Centrioles. |
| Only in plant cells, gives the cell its shape, outside of the cell membrane. | Cell wall. |
| Found only in plant cells, contain the pigment chlorophyll, sites of photosynthesis. | Chloroplasts. |
| Gives the cell its shape, involved in the movement of chromosomes during cell division. | Microtubules. |
| . Long, solid, thread-like, involved in cell division. | Microfilaments |
| Tiny beating hairs for locomotion. (Ex:Paramecium) | Cilia. |
| Long whip-like tail involved in locomotion. (Ex: Sperm cell) | Flagella. |
| Three parts of the cell theory. | 1. Cells are the structural unit of living things. 2. Cells are the functional unit of living things. 3. Cells come only from pre-existing cells. |
| Exceptions to the cell theory. | 1. Viruses are not made up of cells. 2. Mitochondria and chloroplasts have their own DNA and can duplicate themselves. 3. The first cells must have arisen from non-cellular structures. |
| Discovered one-celled organisms and sperm cells. | Anton Van Leeuwenhoek. |
| Examined slices of cork and other plant materials with the compound microscope, named the cell. | Robert Hooke. |
| Discovered the nucleus. | Robert Brown. |
| Stated that all plants were composed of cells. | Mathhias Schleiden. |
| Stated that animal tissues were also composed of cells. | Theodor Schwann. |
| Stated that all cells arise from pre-existing cells. | Rudolph Virchow. |