ft.lauderdale high AP bio project :: essays research papers

2)LEVEL 1 - CellsAre the basic unit of structure and function in livingthings.May serve a specific function within theorganismExamples- blood cells, nerve cells, bone cells, etc.tissue LEVEL 2 - Tissues do up of cells that are similar in structure andfunction and which work together to perform a specificactivityExamples - blood, nervous, bone, etc. Humans nurse 4basic tissues connective, epithelial, muscle, andnerve.LEVEL 3 - harmoniumsMade up of tissues that work together to perform aspecific activityExamples - heart, brain, skin, etc.LEVEL4 - Organ SystemsGroups of two or more tissues that work together toperform a specific function for the organism.Examples - circulatory system, nervous system,skeletal system, etc.LEVEL 5 - OrganismsEntire living things that can carry out all basic lifeprocesses. Meaning they can take in materials, overtakingenergy from food, release wastes, grow, respond to theenvironment, and reproduce.Usually made up of organ systems, but an organism maybe made up of only one cell such(prenominal) as bacteria orprotist.Examples - bacteria, amoeba, mushroom, sunflower,human4)1)Atom The smallest unit of matter that retains the properties of an element.2) Ion An ingredient that has gained or lost electrons thus acquiring a charge.3) Electronegativity The attraction of an atom for the electrons of a covalent bond. 4) Hydrogen Bond A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom a polar covalent bond in other molecule.5) Hydrophilic Having an affinity for water.6) Cohesion The binding together of like molecules, often by hydrogen bonds.7) Capillary action Physical effect caused by the interactions of a liquid with the walls of a thin tube. The capillary effect is a function of the ability of the liquid to wet a particular material.8) Organic Compound Ccontains nuclear number 6 chemically bound to hydrogen. Organic compounds o ften contain other elements (particularly O, N, halogens, or S).9) Polar Covalent Compound A type of covalent bond surrounded by atoms that differ in electronegativity. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive. 10) Molecule both or more atoms held together by covalent bonds.11) Isotope One of several atomic forms of an element, each containing a different number of neutrons and thus differing in atomic mass.12) Ionic bonding A chemical bond resulting from the attraction between oppositely charged ions.13) Nonpolar covalent bond A type of covalent bond in which electrons are shared equally between two atoms of similar electronegativitiy.