Natural Science CLEP Questions With 100% Correct Answers

Natural Science CLEP Questions With 100% Correct Answers cell - Answer smallest unit of most living things organism - Answer living thing prokaryotes - Answer cells that lack a membrane-bound nucleus and membrane-bound organelles organelles - Answer small structures in the cytoplasm of a cell that do special jobs eukoryotic cells - Answer has a nucleus, has organelles or other cell parts virus - Answer particle made up of DNA, RNA, protein, and in some cases lipids that can only replicate only by infecting living cells electron microscope - Answer used to examine tiny cell organelles cell membrane - Answer composed of a bilayer of lipids embedded with globular proteins endocytic vesicles - Answer Formed when cell membrane surrounds a molecule outside the cell and ingests it microvilli - Answer projections on cell membrane increase surface area cytoskeleton - Answer provides structural support to a cell composed of microtubules, microfilaments, centrioles microtubules - Answer hollow tubes of protein about 25 nanometers in diameter, support the cell and moves organelles within the cell microfilaments - Answer double-stranded chains of proteins which give structure to the cell centrioles - Answer tubes, One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division. ribosomes - Answer site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER endoplasmic reticulum - Answer an internal membrane system in which components of cell membrane and some proteins are constructed. rough - instrumental in protein synthesis; smooth - processes lipids fats and steroids