Card Set Information

2014-02-06 13:41:42

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  1. development
    Multistep process by which the first cell of a new individual becomes a multi-celled adult.
  2. emergent property
    A characteristic of a system that does not appear in any of a system’s component parts.
  3. receptor
    Molecule or structure that responds to a specific form of stimulation.
  4. protist
    Diverse group of simple eukaryotes.
  5. bacterium
    A member of the prokaryotic domain Bacteria.
  6. model
    System similar to an object or event that cannot itself be tested directly.
  7. isotopes
    Forms of an element that differ in the number of neutrons their atoms carry
  8. covalent bond
    Chemical bond in which two atoms share apair of electrons.
  9. chemical bond
    An attractive force that arises between two atoms when their electrons interact.
  10. ion
    Atom that carries a charge because it has an unequal number of protons and electrons.
  11. ionic bond
    Type of chemical bond in which a strong mutual attraction forms between ions of opposite charge.
  12. hydrogen bond
    Attraction that forms between a covalently bonded hydrogen atom and another atom taking part in a separate covalent bond.
  13. cohesion
    Tendency of molecules to stick together.
  14. ATP
    Nucleotide that consists of an adenine base, five carbon ribose sugar, and three phosphate groups. Also functions as an energy carrier.
  15. nucleotide
    Monomer of nucleic acids; has five-carbon sugar, nitrogen-containing base, and phosphate groups.
  16. amino acid
    Small organic compound with a carboxyl group, an amine group, and a characteristic side group (R).
  17. peptide bond
    A bond between the amine group of one amino acid and the carboxyl group of another.
  18. phospholipid
    A lipid with a phosphate group in its hydrophilic head, and two nonpolar fatty acid tails.
  19. unsaturated fat
    Lipid with at least one double bond in a fatty acid tail.
  20. fatty acid
    Organic compound that consists of a long chain of carbon atoms with an acidic carboxyl group at one end.
  21. saturated fat
    Fatty acid with no double bonds in its carbon tail.
  22. cytoplasm
    Semifluid substance enclosed by a cell’s plasma membrane.
  23. lipid bilayer
    Structural foundation of cell membranes; mainly phospholipids arranged tail-to-tail in two layers.
  24. nucleoid
    Region of cytoplasm where the DNA is concentrated inside a prokaryotic cell.
  25. nucleus
    Organelle with two membranes that holds a eukaryotic cell’s DNA.
  26. organelle
    Structure that carries out a specialized metabolic function inside a cell.
  27. plasma membrane
    A cell’s outermost membrane.
  28. cell theory
    Fundamental theory of biology: All organisms consist of one or more cells; the cell is the smallest unit of life; each new cell arises from another cell; and a cell passes hereditary material to its offspring.