BIO 101 Test One WWU Connell Questions & Answers!!

Characteristics of life -ANSWER can move, takes in energy or needs energy, needs nutrients, can "breathe" prokaryotic cell -ANSWER various shapes, all contain a cell wall, some are sticky, has a membrane (phospholipid) protecting the cell, has ribosomes, DNA (sharing or transfer-pili) , doesn't have nucleus Eukaryotic cells -ANSWER contains a nucleus, cytoplasm contains specialized structures called organelles, usually 10-time single celled or multi-cellular organisms that contain genetic material Endosymbiosis -ANSWER theory stating that eukaryotes evolved through a process whereby different types of free-living prokaryotes became incorporated inside larger prokaryotic cells and eventually developed into mitochondria, chloroplasts, and possibly other organelles Polarity -ANSWER O-H, N-H, +/- charges simple diffusion -ANSWER molecules pass directly through the plasma membrane without the assistance of another molecule facilitated diffusion -ANSWER molecules move across the plasma membrane with the help of a channel or carrier molecule osmosis -ANSWER Diffusion of water through a selectively