EXAM NUMBER 1 bio

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Author:
tjtolman
ID:
151594
Filename:
EXAM NUMBER 1 bio
Updated:
2012-05-01 22:12:22
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bio
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Description:
answers to exam number one
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  1. Hierachial order from smallest to largest:
    molecule, organelle, cell, organism, population, community
  2. Homeostasis:
    internal conditions stay the same
  3. Central Dogma directly concerns:
    storage and use of genetic info
  4. Natural selection:
    Natural selection is a process that involves diff. species being tested by thier environment. Natural selection is a process that leads to microevolution.
  5. Nitrogen has 7 protons. Atomic number? Electrons?
    7, and 7
  6. Reduction and oxidation have to do with the gain or loss of:
    electrons
  7. H-N-H lines refer to:
    covalent bonds- sharing electrons
  8. bonds between water molecules are:
    hydrogen bonds
  9. An atom is most stable when?
    outer shell is full
  10. R-COOH is:
    an acid - release H+
  11. Enzyme is made of:
    protein
  12. Most freq. organic moleucle:
    C,H,O
  13. Hydrolysis and dehydration sythnesis both:
    are involved w/ water
  14. Glucose - carbohydrate
  15. Include a monosaccharide, disaccharide, and polysaccharide in order:
    • glucose
    • sucrose
    • amylose
  16. a molecule that contains much energy, variable in structure and not water soluble. no amino acids:
    lipid
  17. R - variable group
  18. folding of secondary structure of a protein into globular form is:
    tertiary
  19. ACGT are for _____ in ______
    nucleotides in DNA
  20. Van leeuwenhoek
    1600's saw cells but didnt know it
  21. Distinguis (resolve) two objects 3um apart.. The best light microscope can do this?? true or false
    true
  22. Terms associated w/ at least some prokaryotes:
    • cell wall
    • capsule
    • flagellum
  23. What is true and false about nucleus:
    • surrounded by 2 membranes: true
    • contains chromosomes: true
    • nuclear pore allow movement: true
    • it is same as nucleoid: false
  24. A cell that makes lots of proteins will have lots of:
    ribosomes and rough ER
  25. organelle that receives transport vesicles and produces secretory vesicles is:
    golgi body
  26. mircobodies are a kind of vesicle: true or false
    true
  27. group of cells: has cell walls, cell wall matrix, contains lots of lipids:
    plant cell from the surface of the plant
  28. ________ site of cellular aerobic respiration:
    mitochondria
  29. terms associated w/ chloroplasts:
    • chlorophyll
    • thylakoid
    • granum
  30. cytoskeletal elements that cause cell plate formation in plants and cause movement in eukaryotes:
    microtubules
  31. 2 animal cells held together. doesn't matter if there is leakage. they are likely to have:
    desmosomes
  32. Cell membranes are made mostly of:
    lipids and proteins
  33. how is cell (plasma) membrane described:
    fluid mosaic model
  34. cell surface receptors and transport molecules are made of:
    protein
  35. water molecules pass directly through a cellular matrix with NO channel.. true or false:
    false
  36. if a cell is hyperosmotic relative to its surrounding, water will tend to enter the cell through osmosis... true or false:
    true
  37. exocytosis and endocytosis are types of:
    transport

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