Everything you need to know about a cell - definitions in outline form, interpretation of Honors Biology intro.

This isnt written in paper form, but a relaible topple of terms to help you orginize your thoughts, or clarify problems. I do an A in this Honors Biology! I.Chemical foundations for the Cells A.Organization of matter -(elements, compounds, mixtures) Elements- materials that cannot be decomposed into substances with divers(prenominal) properties. Compounds-made of assorted elements in fixed and unvarying proportions Mixtures- twain or much elements impersonate in varying proportions 1.Atoms and ions a. soupcons- smallest portion of an element that even so retains properties of the element; contains protons, neutrons, and electrons b.molecules- units of two or more mites c.atomic nucleus- core of atom that accounts for almost all its mass; (-)electrons move rapidly binge it d.atomic number- number of (+) protons e.mass number- number of protons and neutrons f.ion- an atom (or compound) that has gained or lost 1 or more electrons, thus is positive or negative in charge 2.Isotopes- vary in number of neutrons a.radioactive isotopes- accommodate insecure nuclei; breakdown over time 3.Arrangement of electrons a.         orbitals- regions of space virtually nucleus where electrons may be at any instant. each contains 1 or 2 electrons b.         electrons closest to nucleus argon at menial energy levels B.         Bonds between Atoms 1.         ionic bond- two ions bound by mutual attraction of opposite charges (Na+Cl-) 2.         covalent bonds- atoms share electrons a.         non-polar- both(prenominal) atoms exert same pull on divided electrons b.         polar- hotshot atom exerts more pull than the other on shared electrons; one atom is or so positive, the other slightly banish; net charge zero 3.         Hydrogen bond- an negative atom fallible attracts an H atom that is covalently bonded to a assorted atom 4.          Hydrophobic interactions (not consecuti! ve bonds) a.         hydrophilic- substance is attracted to water molecules collectible to polar nature b.         hydrophobic- substance is repelled by water molecules due(p) to non-polar... If you want to get a wide-cut essay, order it on our website: BestEssayCheap.com

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