BIOL 111 Lab Glossary

BIOL 111 Lab Glossary - Bio Lab Glossary Lab 1 Microcosm: a...

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Bio Lab Glossary Lab 1 Microcosm: a miniature lake model-system we used to test the effect of nutrients Experimental Design: hypothesis, controls, replication, randomization Control: the untreated specimen Microscope Total Magnification: (magnification of eyepiece)(magnification of objective)(magnification factor or binocular tube=1) Oil Immersion: used when needing very high total magnification Newsprint: letters are inverted and backwards, as is the movement Optical Section: a single plane of focus in an object Tissues: groups of cells that function together Organ: several tissues grouped together to form a structural and functional unit Organ System: a group of organs working together Elodea Leaf: wet mount-2 layers of cells, not uniform in size. Thorn Cells : cells projecting outwards from edge of elodea leaf which have visible nuclei and nucleolus but not visible chloroplasts Cytoplasmic Streaming: continual movement of the cytoplasm and chloroplasts as a result Iodine Staining: reacts with starch, kills cells, blue/black in color, make pyrenoids visible Pyrenoids: starch-containing bodies where sugars are converted into starch Buttercup (Ranunculus Acris) Root: organ Safranin: red, shows us lignified cell walls Fast Green: green, shows us cellulose cell walls Crystal Violet : purple, shows us starch grains Human Epithelial (Cheek) Cells: one stained with methyl green Small Intestine/Kidney of Amphiuma: haematoxylin-eosin stained, cell structure Lumen : small cavity enclosed by large wedge-shaped cells in kidney Planting of Bean and Brassica Proper Illumination Steps Lab 2-Bacteria, Protists, Fungi Spirillium Volutans: large bacteria, shape (spirillum or bacillus), cell wall, nucleus, and flagella Algae: photosynthetic, chlorophyll a, single celled reproductive structures, no roots, stems or leaves Phytoplankton: floating algae which produce 50% of the world’s oxygen: many dying phytoplankton will turn into C0 2 , lowering the amount of oxygen Mitosis: resulting in 2 daughter cells which have the same number of chromosomes as the parent Meiosis: resulting in 4 daughter cells which have half the number of chromosomes Oedogonium: advanced protist, wet mount, life cycle, vegetative structure, asexual and sexual reproduction
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Filament: unbranched chain of cells-simplest form of multicellular organization Parenchymatous Thallus (Demo Ulva): flat, prostrate, undifferentiated body Apical caps: present at apex of each cell, determine number of cell divisions Zoospores: motile single cells which produce new filaments (any cell’s contents may five rise to this single, multi-flagellated zoospore) Sexual Reproduction (Oedogonium): oogamous with large non-motile eggs and small multiflagellated sperm like zoospores Oogonia: female reproductive structures, formed by certain cells at maturity at regular intervals along filament, each produces a single egg Antheridia: male reproductive structures, each producing 2 multiflagellated sperm Gametangia: male and female reproductive structures
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This note was uploaded on 12/12/2008 for the course BIOL 111 taught by Professor Brianmcgill during the Fall '07 term at McGill.

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BIOL 111 Lab Glossary - Bio Lab Glossary Lab 1 Microcosm: a...

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