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Organelles
YGK These Organelles
| Question | Answer |
|---|---|
| "Command central" containing cell DNA | Nucleus |
| DNA form during most of the cell cycle | Chromatin |
| Condensed DNA form during mitosis | Chromosomes |
| Dense bodies in the nucleus containing ribosomal RNA | Nucleoli |
| Selectively-permeable barrier surrounding eukaryotic nucleus | Nuclear envelope |
| Machines that coordinate protein synthesis (translation) | Ribosomes |
| The two components of a ribosome | RNA and protein subunits |
| Organelles that produce energy in the form of ATP | Mitochondria |
| Folds of the inner mitochondrial membrane | Cristae |
| Fluid inside the mitochondria containing DNA and ribosomes | Matrix |
| Membrane network continuous with the nuclear envelope | Endoplasmic reticulum (ER) |
| Difference between rough and smooth ER | Presence of ribosomes |
| "Post office" of the cell that tags and packages proteins | Golgi apparatus |
| Organelles containing digestive enzymes | Lysosomes |
| Plant-only organelles containing chlorophyll | Chloroplasts |
| Site of photosynthesis | Chloroplasts |
| Stacks of thylakoids within chloroplasts | Grana |
| Fluid surrounding grana in chloroplasts | Stroma |
| Liquid-filled storage cavities in plants and protists | Vacuoles |
| Structure used by freshwater protists to remove excess water | Contractile vacuole |
| Long, whip-like motility structures | Flagella |
| Short, hair-like motility projections | Cilia |
| Microtubule arrangement in cilia and flagella | 9 + 2 |
| Molecular motors powering cilia and flagella | Kinesin and dynein |
| Paired organelles that organize the microtubule spindle | Centrioles |
| Cross-section arrangement of centrioles | Nine sets of microtubule triplets |