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Biology 111

by: Brianna White

Biology 111 Biol 111

Brianna White
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About this Document

These notes cover chapter 6
Gen Biology I
Dr. Jarstfer
Class Notes




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This 2 page Class Notes was uploaded by Brianna White on Thursday September 22, 2016. The Class Notes belongs to Biol 111 at Lincoln Memorial University taught by Dr. Jarstfer in Fall 2016. Since its upload, it has received 3 views. For similar materials see Gen Biology I in Science at Lincoln Memorial University.

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Date Created: 09/22/16
Biology 111 Chapter 6 Notes The Cell Cell wall is built from the inside out and it is not alive. Cell Membrane=alive Importance of cell technology to the study of cells Microscopy Microscopy limited by the wave length of energy used light allowed about 1000-1200x based on resolution-ability to perceive the two points. Electron microscopy is to perceive the image in greater detail. Centrifugation- spinning in a container using force to separate contents inside the container, the heavier stuff falls to the bottom and the lighter stuff goes to the top.  Ultra-centrifuges achieve more than 1 million x gravity. (G)  Sonicator- breaks apart cells by using high pitched sounds. Components of a Cell -Prokaryotic Cells (No true nucleus)  Cell solution (cytosol)  Bacterial Chromosome  Flagella- slender threadlike structure to help the organism swim  Ribosome- consists of RNA protein. They bind and synthesize polypeptides and proteins  Plasma Membrane- a microscopic membrane of lipids and proteins that forms the external boundary of the cytoplasm of a cell or encloses a vacuole.  Nucleoid (genetic material)- Houses Primary DNA  Chromosome- genetic material  Cell Wall  Fimbriae- a series of threads **All Cells have: Ribosomes Plasma Membrane Cytosol Chromosome - Eukaryotic Cells (Membrane Bound Organelles) Cells are small because it creates efficiency, easy for diffusion, and the total distance from the surface of the cell is important.  Pure complexes- sort during transport  Nuclear locator signal NLS sequence that allows passage through the nucleus.  Ribsosomes are either free in cytoplasm or bound to protiens to the Endoplasmic reticulum for secretion.  Rough ER- Ribosomes on surface, flattened  Smooth Er- Tubes, synthesize of membranes, detox  Golgi Apparatus- Vesicles, cis is the face and trans is the opposite side  Golgi- packages, sorts, and madyfies molecules  Lysosome Cutting body Membranes  Are constantly pinching off to make vacuoles or vesicles to move materials and then being recycled.  Vacuoles are larger than vesicles  Phagocytosis- Cell Eating  Phinocytosis- Cell Drinking Endosymbiant Hypothesis- Double membrane organelles have an internal organelles have an internal circular chromosome, ribosomes like prokayrotes Property Microtubules Microfillaments Intermediate Filaments Structure Hollow Tubes 2 Intertwined Protiens called stands of actin cables Diameter 25nm 15nm 7nm 8-12 nm Functions Cell Shape, Muscle Anchorage of Chromosome contraction nucleus movement


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