bio lab exam

bio lab exam #2 LAB 3 cell theory, cell structure, and function (ch 3 in txtbk) Study online at 1. cell micrographs on blackboard: review em 2. review lab 1 for proper use and care of: the microscope 3. things you need to do to your microscope to prepare it for storage that the end of lab: -clean all of the lenses with lens paper only -clean the stage with tissue wipes -turn the light to the lowest setting then switch it off -unplug the cord from outlet. wears cord on back of arm, if not wrap cord around base in front of light source, not under the stage -store microscope with arm facing out -carry it with one hand under the base and one hand on the arm -lowest power objective(4x) in place -stage lowered 4. what safety equipment will you be required to wear during this lab (cell theory, structure and fxn) (onion, elodea, potato, east, check cells): eye protection and gloves 5. why might the cell theory actually be considered a law: the cell theory might actually be considered a law because all organisms are composed of cells. they are the basic living and functioning unit of all organisms and all cells come from preexisting cells. it states a generalization and describes a pattern in nature 6. prokaryotic vs eukaryotic cell: draw them and label features that distinguish them 7. how does the endosymbiotic theory explain the presence of membrane bound organelles in eukaryotic cells: it explains the presence of membrane bound organelles in eukarytoci cells because the cells of eukaryotic organisms have organelles called mitochondria that use oxygen to break down food molecules and release energy for us 8. 3 domains: archaea, bacteria eukarya 9. which domain contains organisms that are prokaryotic: the archaea are prokaryotic and bacteria 10. which domain contains organisms that are eukaryotic: eukarya 11. which domains are more closely related to each other: archaea and bacteria 12. domain classification for human check cells is it plant animal or fungus: eukaryotic not applicable?? 13. domain classification for bacteria is it plant animal or fungus: prokaryotic