Properties: a. Cohesion b. Adhesion c. Surface tension d. Capillary action e. universal solvent cces2013 f. High specific heat g. high heat of vaporization h. Forms ice with decrease in temp 11 The CELL: Chemical Components INORGANIC COMPOUNDS: 1. Water Unique Properties necessary for life: a. Cohesion: water molecules stick to each other cces2013 12 The CELL: Chemical Components INORGANIC COMPOUNDS: 1. Water Unique Properties necessary for life: b. Adhesion – water molecules
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7/cation 23. 0 - 6 = acids‚ 7 = neutral‚ 8 - 14 = bases 24. Help maintain homeostasis within an organism by keeping pH at a nearly constant value 25. Unequal sharing of atoms 26. a) Adhesion - "water gripping to something else" b) Cohesion - "water gripping to water" c) Capillary Action - adhesion + cohesion working together d) Solubility - amount of a substance (called the solute) that dissolves in a unit volume of a liquid substance (called the
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The Nature of biology and science Cell theory: * All organisms are made of cells and the products of cells * All cells come from pre-existing cells * The cell is the smallest organisational unit Cells have an outer membrane‚ encloses fluid contents of cell (cytoplasm) Robert Hooke (1665): observed dead cells from bark Anton van Leeuwenhoek: described living cells Matthias Schleiden: plant issues Theodor Schwann: animal tissues Bacteria found without nucleus and lacking other membrane-bound
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* Plants live in two difference environments at the same time: * * air - stem and leaves‚ surrounded by air and where light‚ CO2‚ and oxygen. * soil - roots‚ supplies water and nutrients. * Each part of the plant has a specific function: * * leaves - carry out photosynthesis. * roots - anchor the plant & absorb water and soil nutrients. * stems - support the leaves and transport materials to other plant parts. * What does the plant
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water has four emergent properties: Cohesion 1. Water molecules stay close each other as a result of hydrogen bonding. 2. Although the arrangement of molecules in a sample of liquid water is constantly changing‚ at any given moment many of the molecules are linked by multiple hydrogen bonds. 3. These linkages make water more structured than most other liquid. 4. Collectively‚ the hydrogen bonds hold the substance together‚ a phenomenon called cohesion. 5. Cohesion means the hydrogen bonding between
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Biology Notes 1.02 Sometimes a practice or belief claims to be science but does not follow the scientific method or cannot be proven reliable through experimentation. These practices are examples of pseudoscience‚ which literally means "fake science." Charms‚ astrology = stars‚ and phrenology= reading the bump on skull 1.03 * In the mid 1600s in the Netherlands‚ the scientist Antonie van Leeuwenhoek developed the first known microscope using a single magnifying lens. He was the first person
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Review 1: The Chemistry and Molecules of Life Please note that this is a general outline of some of the topics we will have discussed and are detailed in chapters 2-5 of your textbook. While this gives you an idea of some of the terms/phrases you are responsible for‚ not all the material we covered is included. You are responsible for everything discussed in class‚ but NOT for material in the book that was not addressed in lecture. Please do NOT assume that if you know the concepts/answers to the
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water allows many organisms to readily float on water. The buoyancy in water helps the swimming of motile gametes and in the dispersal of fruits and seeds. Hydrogen bonds hold water molecules together‚ therefore giving water the properties of cohesion and adhesion – leaves pull water upwards from the roots through the xylem. Hydrogen bond Hydrogen Bonding In Cellulose: Cellulose is a polysaccharide and consists of linear chains of beta-glucose residues with the OH (hydroxyl)
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Topic 9: Plant Science 9.1 Plant Structure and Growth 9.1.1 Draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. Cross-section of a stem Part of plant | Purpose | Epidermis | Surface of the stem made of a number of layers often with a waxy cuticle to reduce water loss | Cortex Tissue | Forming a cylinder of tissue around the outer edge of the stem. Often contains cells with secondary thickening in the cell walls which provides
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Discuss why hydrogen bonding is essential for life Throughout biochemistry there are many bonds without which life as it is on earth today would not be possible. One of the most important bonds of these is the hydrogen bond‚ a weak chemical bond that is present in essential biological molecules such as water and polypeptides. A hydrogen bond is defined by Campbell and Reece as occurring when a hydrogen atom is covalently bonded to an electronegative atom but attracted to another electronegative
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