Biology Test 1

  1. What properties do all matter have?
    Anything that takes up space and has mass.
  2. Name the particles of an atom.
    Protons, Neutrons, and Electrons.
  3. Which atom particles has the least mass?
  4. An element like Hydrogen has how many types of atom?
    It has one type of atom.
  5. Define compound.
    Substances made of two or more elements chemically joined.
  6. Chemical bonding occurs when atoms try to fill what?
    Outer orbit.
  7. Give an example of an ionic compound.
    Na Cl (Sodium Chloride.)
  8. What ion  does an acid have a high concentration of?
    Acid is H+ 

    Base is OH-
  9. What kind of scale is the PH scale?
  10. Describe the head and tail properties of a phospholipid.
    • head - hydrophic
    • tail - hydrophobic
  11. What type of bond loses or gains electrons?
    Iconic Bonds
  12. What is it called when water is attracted to other water molecules?
    Cohesion bond.
  13. What type of bonding is when hydrogen is bonded to oxygen nitrogen and fluorine?
    Hydrogen bonding
  14. Bonding that shares electrons.
    Covalent bonding
  15. This is an organic compound (sugar) made of Carbon Hydrogen and Oxygen.
  16. Large organic molecules that don't dissolve in water.
  17. What is the attraction of the water molecule to other polar molecules called?
  18. What type of bond makes up the water molecule HxO?
    A covalent bond.
  19. Solution is a mixture of ___________?
    One or more substances and area equally distributed.
  20. What is the basic unit of organic compounds?
  21. Define a compound.
    Two or more different elements chemically joined.
  22. What causes water to form drops?
    hydrogen bonds.
  23. Why is an element a pure substance?
    It has one type of atom.
  24. In the equation above CO2, H2O are called?
    the reactents.
  25. When CH2O dissolves in water the PH of the solution is below 7 because extra _______ are formed.
  26. In the above equation CH2O,O2 are called what?
    The products
  27. Which is not a mono saccharide?
    A.  Fructose
    B.  Amylose
    C.  Galactose
    D.  Glucose
  28. What carbohydrate functions as support in plants?
  29. Draw a lipid.  Be able to recognize a lipid molecule.
    Head and tail
  30. Draw a carbohydrate.  Be able to recognize a carbohydrate.
    A hexagon
  31. What is the function of an enzyme in a reaction?
    Types of catalysts used by living organisms.  They are affected by PH, shape of enzyme and temperature.
  32. Which of the following statements regarding the graph is true?

    C.   The difference.....
  33. Reaction 3 in the graph.

  34. What are the three types of lipids?
    Fatty acids, phospholipids and wax
  35. What are the two types of nucleic acids?
    Nudeolides, DNA and RNA.
  36. What is a molecule called that has a partial positive charge on one side of the molecule and a negative charge on the other?
    Polar molecule.
  37. name the three parts of the DNA molecule.
    Phosphate, carbon and nitrogen.
  38. What is a molecule that has a partial positive charge on one side and negative charge on the other?
    Polar molecule
  39. Name three parts of the DNA molecule.
    Phosphate, Nitrogenous bases, and Thymine.
  40. What are valence electrons?
    An electron associated with an atom.
  41. How many valence electrons does Nitrogen have?
  42. What is the number of protons, neutrons, and electrons in Nitrogen?
    • Protons is 7
    • Neutrons is 7
    • Electrons is 15
Card Set
Biology Test 1