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p89 second half of section4-2 and section 4-3

p89 second half of section4-2 and section 4-3 - –...

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Joseph Leonard – 12/13/07 – p89 second half of section 4-2, and section 4-3 4-2 1. mitochondrion – a relatively large organelle; the site of chemical reactions that transfer energy from organic compounds to ATP 2. nuclear envelope – double membrane that surrounds the nucleus 3. nuclear matrix – protein skeleton that maintains the shape of the nucleus 4. nuclear pore – small holes in the nuclear envelope 5. nucleolus – spherical envelope where ribosomes are synthesized and partially assembled before they pass through the nuclear pores to the cytosol 6. peripheral protein – protein located in both the inner and outer surface of the cell membrane 7. plastid – organelles that are surrounded by two membranes and contain DNA. 8. ribosome – most numerous organelles; an assemblage of RNA and proteins which isn’t surrounded by a membrane 9. rough endoplasmic reticulum – portion of the endoplasmic reticulum that contains ribosomes 10. selectively permeable membrane
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Unformatted text preview: – membrane that allows some molecules in, but keeps other out 11. smooth endoplasmic reticulum – portion of the endoplasmic reticulum that lacks attached ribosomes 12. spindle fiber – bundles of microtubules formed before a cell divides that assist in the movement of chromosomes during cell division 13. thylakoid – flattened, membranous sac inside a chloroplast; contains most of components involved in the light reactions of photosynthesis 14. vacuole – fluid-filled organelle that stores enzymes or metabolic wastes in a plant cell 4-3 15. colonial organism – collection of genetically identical cells that live together in a closely connected group 16. organ – several types of tissues that interact to perform a specific function 17. organ system – made up of a group of organs that work together to perform a set of related tasks 18. tissue – groups of cells that carry out a specific function...
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