1. Answer the following: A cell with 95% water concentration and a 5 % dissolved solute concentration is placed in a HYPERtonic solution? The water concentration of the HYPERtonic solution should be? a. 98% b. 92% c. 96% d. not enough info A- red blood cells plus normal serum B- red blood cells plus 10% salt solution C- red blood cells plus distilled water Which suspension would show rbc’s that are shriveled? Change in cell volume is due to? Which suspension would show rbc’s that are swollen?

2. Bacteria or virus? • reproduce by conjugation__________ • contain RNA or DNA ________ • require a host to reproduce_________ • generally worse to be infected with_________ • generally not treated by a doctor with antibiotics_________ • most are harmless_________ • covered by a protein or lipid coat_________

3. Give three differences between our(human) cells and a bacteria cell. • Explain the difference between bacterial and viral reproduction. • Identify the type of bacteria • must have oxygen to survive • will die in the presence of oxygen • can survive in both environments- oxygen rich or oxygen poor • What do we call a virus that infects bacteria?

4. Virchow • Schleiden • Schwann • Hooke • Brown • Von Leeuwenhoek • stated that all cells arise from pre-existing cells • discovered the cell nucleus • stated that all plants were made of cells • stated that all animals are made of cells • gave the name “cells” to the structures he observed in cork • the first single lens microscope

5. cell membrane cell wall centriole chloroplast golgi complex lysosome mitochondria nucleolus ribosome endoplasmic reticulum vacuole cytoplasm microtubule microfilament