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Bio 1 Week 6 Notes

by: clb13m

Bio 1 Week 6 Notes BSC2010

GPA 3.8
Biological Science 1
Dr. Steven Marks

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About this Document

talks about cell organelles in depth
Biological Science 1
Dr. Steven Marks
Class Notes
Biology 1
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This 0 page Class Notes was uploaded by clb13m on Monday February 15, 2016. The Class Notes belongs to BSC2010 at Florida State University taught by Dr. Steven Marks in Fall 2015. Since its upload, it has received 16 views. For similar materials see Biological Science 1 in Biological Sciences at Florida State University.


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Date Created: 02/15/16
0 Know the difference in resolution and magnification between light and electron microscopes 0 Light Microscopes up to 1000x magnification 02 micrometers resolution 0 Electron microscope 1000000x magnification 1nm resolution 0 Understand the process of cell fractionation based on centrifugation and know what the purpose of cell fractionation is 0 Cell fractionation allows the purification and study of cellular components organelles You centrifuge for a certain period of time the longer the time the heavier mass separates more Pellet on the bottom forms with cellular debrisorganelles 0 Know what the differences in cell structure are between prokaryotic cells and eukaryotic cells 0 Bacteria are prokaryotes Animals fungi protists and plants are eukaryotes o Similarities Selectively permeable plasma membrane cytoplasm semifluid mixture of water and organic and inorganic compounds chromosomes carry genes made of DNA and protein ribosomes make proteins 0 Differences Eukaryotes have internal membrane bound organelles particularly a nucleus prokaryotes do not 0 Know that most eukaryotic cells are between 10100 micro meters in diameter whereas most prokaryotic cells are about 1 micro meters in diameter 0 Know the following terms plasma membrane cytoplasm nucleus cell wall ribosomes chromosomes 0 Plasma membrane membrane of lipids and proteins that forms the external boundary of the cytoplasm of a cell or encloses a vacuole and that regulates the passage of molecules in and out of the cytoplasm o Cytoplasm fluid waterorganicinorganic compounds in cell 0 Nucleus a dense organelle present in most eukaryotic cells typically a single rounded structure bounded by a double membrane containing the genetic material 0 Cell wall a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants fungi and bacteria In the algae and higher plants it consists mainly of cellulose o Ribosomes free ribosomes loose in cytoplasma bound ribosomes attached to ER made in nucleolus o Chromosomes DNA chromatin is the chromosome fibers 0 Know the general structure and function Be able to identify each of these organelles in photographs or drawings of cells 0 Plasma membrane is a biological membrane that separates the interior of all cells from the outside environment The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells 0 Nucleus double membrane prorated by nuclear pores ribosomes amp mRNA made in nucleolus o Ribosomes synthesize proteins free or bound get transported to other parts of the cell by transport vesicles 0 Rough ER ribosomes in RER make membrane proteins and proteins to be secreted these proteins are transported to other parts of cell by transport vesicles membrane factory for cell 0 Smooth ER synthesis of lipids storage of calcium o Golgi sorts and moves membranes and proteins made in ER vesicle merges and dumps sack from the ER to the golgi The stuff in the sack gets sortedrelocated to its correct place 0 Lysosome contain enzymes that help digest food or defective macromolecules or organelles to recycle their components Phagocytosis lysosome digests food in the food vacuole that was taken into the cell Autophagy picks up organelles thats dying o Mitochondria membrane bound organelle have own DNNribosomes for making its own proteins transforms energy from one form to another used for cellular respiration o Chloroplast membrane bound organelle have own DNAribosomes for making its own proteins transforms energy from one form to another used for photosynthesis Understand that the pathway for the flow of materials to the cell surface is from ER to the Golgi to Golgi vesicles to the plasma membrane 0 Vesicle goes from rough ER to cis Golgi gets transported to transexual golgi then is determined whether it gets transported to the lysosome plasma membrane or wherever the protein inside the vesicle tells it to go mRNA Know that cell shape and cellular movements are mediated by the cytoskeleton which is composed of microtubules tubulin protein microfilaments actin protein and intermediate filaments keratin protein


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