Science Midterm

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Lee3
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189772
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Science Midterm
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2012-12-16 12:48:56
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Science Midtrerm
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  1. What are metric system measurements
    • Meter
    • liter
    • gram
  2. Theory vs hypothesis
    • theory is broad range hyposis
    • hypothesis is idea to be proven
  3. Scientific methods steps
    • observations
    • hypothesis must be testable
    • collect data from experiemtns
    • conclusions
  4. List characteristics of living things and explain each
    • based on genetic code
    • grow and develop
    • reproduce
    • stable internal environment
    • obtain and use energy
    • made of cells
    • evolve
  5. celll specialization
    cells are made to form special task and functions
  6. homeostasis
    the maintaining of stable internal environment
  7. An atom has a nucleus made of two things
    protons and neutrons
  8. What is the mass number and atomic number of oxygen
    • M=15.9994 (16)
    • Atom = 8
  9. In the chemical reaction X+ Y arrow XY, which are products/reactants
    • R= X+Y
    • P = XY
  10. Water: structure, property
    • adhesion
    • cohesion
    • polar
  11. Carbohydrate
    Structure and Function
    • simnple sugar - C, H, O
    • Energy
  12. Nucleic Acid
    Structure and Function
    • C,H, O, N, P
    • DNA/RNA
  13. Lipid
    Structure and function
    • C,O Some H
    • Store Energy
  14. Protein
    structure and function
    • Amino acids
    • fight decrease enzyme rate
  15. what are the 3 parts of nucleic acid
    • 5 carbonb sugars
    • N-base
    • P-group
  16. activation energy
    energy needed to get RXH started
  17. Catalyst
    speeds up rate of RXH
  18. enzymes
    in body lowers the acceleration of energy
  19. what are the 3 parts of cell theory
    • all living things are made of cells
    • cell is basis unit of life
    • cells are made from other cells
  20. what tech made the discovery of cells possible
    microscope
  21. prokaryotes vs eukarotes
    • P = non nucleus
    • E = nucleus
    • P= plant
    • E - Animal
  22. nucleus
    store DNA
  23. lysosome
    breaks down organelles
  24. ribosomes
    makes proteins
  25. mitochondria
    provides energy
  26. chloroplast
    plants converts sun into energy
  27. cell wall
    rigid - supports protect plants from fungi
  28. cell membrane
    cell boundary to environment
  29. how do nutrients get into and out of cell membranes
    protein pumps
  30. passive transport
  31. osmosis
    tendency of fluid to pass through semi-permeable membrane
  32. active transport
    requires energy to transport protein
  33. endocytosis
    moving items outside to inside
  34. exocytosis
    moving items inside to outside
  35. levels of organization (define each)
    • cell - basic unit of life
    • tissue - consist of specialized cells
    • organ - group of tissue
    • org system - group of organs
  36. explain osmosis
  37. what is the equation for photosynthesis - symbols and words
    6H20 + 6CO2 arrow C6 H12 06 + 602
  38. what is an autotroph
    makes own food
  39. what is a heterotroph
    cannot make own food
  40. What are the parts of an ATP molecule
    • adenine
    • ribose
    • 3 phosphate groups
  41. what is the function of ATP
    store and release energy
  42. how do you get ADH
    break P bond
  43. pigments
    light absorbing molecules 
  44. why do plants appear green
    chlorophyll cannot absorb green light
  45. label stroma, granum and thylakoid
  46. what are the three stages of cellular respiration
    glycolysis, krebs, electron transport
  47. what is the equation for cellelar respiration
  48. What is aerobic
    requires oxygen
  49. two types of fermentation
    lactic acid and alcholic
  50. how are photosynthesis and cellular respiration related
    • photo removes C02
    • Cell resp puts it back
  51. what roles does oxygen play in cellular respiration and photosynthesis
    • phot - releases oxygen
    • cell resp - takes in oxygen
  52. why does growth cause problems in cells
    if grows to rapidly cells mess up
  53. compare and contrast sexual and asexual reproduction
    • sexual - male/female - egg/sperm
    • asex - budding/pollenation
  54. mitosis
    type of cell division
  55. phases of mitosis
    • interphase
    • prophase
    • metaphase
    • anaphase
    • telophase
    • cytophase
  56. cyclin
    proteins in cell cycle
  57. what is cancer
    uncontrollable division of abnormal cells
  58. differentiation
    cell develops or matures
  59. what is the haploid number of corn.  The diploid number if 10
    20
  60. what is the diploid number - the haploid numbers is 60
    120
  61. what is an allele
    gene in alternate form
  62. why is probability important in genetics
    it tells you whether your gonna have dominate or ressive genes
  63. homozygous 
    identical alleles
  64. meiosis
    type of cell division

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