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Physical Science Study Guide Answers

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Answers to Physical Science Study Guide

  1. The nucleus has a positive charge
  2. Atoms are made of even smaller particles
  3. Proton, neutron, electron
  4. The masses and distribution of the elements isotopes
  5. 14
  6. 35 protons, 46 neutrons, and 35 electrons
  7. Two
  8. Metal cations and shared electrons that surround them
  9. One-twelfth (1/12)
  10. Increasing atomic mass, with similar elements grouped in columns
  11. Elements that filled blank spaces in the table
  12. Answers will vary:
    1. Halogens – F, Cl, Br, I, At
    2. Noble gases – He, Ne, Ar, Kr, Xe, Rn
    3. Alkali metals – Li, Na, K, Rb, Cs, Fr
    4. Carbon family – C, Si, Ge, Sn, Pb
    5. Ionic compound
    6. Become less metallic
    7. +1
    8. The reactivity of barium is greater because reactivity of group 2A metals increases from top to bottom of the column
    9. Ionic because there is electron transfer
    10. Metalloid
    11. Types and amounts of elements in the alloy
    12. Bronze is harder than copper
    13. Less
    14. Ca2+ and Br
    15. Covalent
    16. Given
    17. 2
    18. They become more stable
    19. Electrons are not shared equally between atoms
    20. Aluminum sulfide
    21. Iron(III) hydroxide
    22. Iron and carbon

 

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Written by Ashley Erin

May 15, 2013 at 1:29 pm

Posted in Uncategorized

biology study guide answers

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Biology study guide answer sheet

  1. Mitosis
    1. Prophase – spindle fibers appear, chromosomes condense, nuclear envelope disappears
    2. Metaphase – chromosomes line up in middle of cell
    3. Anaphase – chromosomes separate
    4. Telophase – chromosomes unravel, nuclear envelope appears
    5. See in class
    6. Before – interphase (cell growing and DNA is copied); After – cytokinesis (final division of cell.  Forms a cleavage furrow in animal cells and a cell plate in plant cells)
    7. Helps to move the chromosomes during mitosis
    8. Mitosis is cell growth and replication.  Chromosome number is same as the parent (haploid to haploid).  Meiosis is responsible for genetic variation and the chromosome number is split in half (diploid to haploid).
    9. Crossing over of chromosomes in Prophase I
    10. Split in half
    11. Gametes/sex cells: egg and sperm
    12. Nucleotides; sugar, base, nitrogen base
    13. Adenine pairs with thymine, cytosine pairs with guanine
    14. To copy genetic information; interphase
    15. DNA to RNA to Protein
    16. All living things are made of cells, new cells come from existing cells, the cell is the basic unit of life
    17. Prokaryotic and eukaryotic; eukaryotic cells have a nucleus and membrane bound organelles, while prokaryotes do not
    18. Diffusion
    19. Active transport moves substances against the concentration gradient
    20. ATP (adenosine triphosphate); energy is released when the bond is broken between the 2nd and 3rd phosphate
    21. Observe, question, make a testable explanation, experiment, collect and analyze data, state findings
    22. Independent variable is the variable that is manipulated by the scientist.  Dependent variable changes according to the independent variable.  A control is what is used to compare results, like baseline data.
    23. Different alleles; same alleles
    24. 50
    25. 50
    26. Pure breed
    27. Living things
    28. 0
    29. It will swell
    30. 75 rose comb and 25 single comb
    31. Response to the environment; rabbit running in the rain
    32. Tt
    33. A control

Written by Ashley Erin

May 15, 2013 at 9:29 am

Posted in Uncategorized