CELLS

3. a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence.
5. a short microscopic hairlike vibrating structure found in large numbers on the surface of certain cells, either causing currents in the surrounding fluid, or, in some protozoans and other small organisms, providing propulsion.
8. a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division
9. membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids.
10. a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa.
11. an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers.

1. (in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.
2. body a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
4. a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
6. reticulum a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.
7. a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.