Biology Test 2 Part 1

14 Questions

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Biology Test Quizzes & Trivia

Goes over test of biology test 2 in part 1


Questions and Answers
  • 1. 
    CHNOPS are
    • A. 

      The only atoms found in nonliving and living things

    • B. 

      The only atoms found in living things.

    • C. 

      Atoms basic to life.

    • D. 

      Atoms found in rocks.

    • E. 

      The only atoms found in nonliving and living things,as well as atoms basic to life.

  • 2. 
    Which of the following is not a component of an atom?
    • A. 

      Proton

    • B. 

      Neutron

    • C. 

      Lectons

    • D. 

      Electron

  • 3. 
    The atomic number tells you the
    • A. 

      Number of neutrons in the nucleus.

    • B. 

      Number of protons in the atom.

    • C. 

      Atomic mass of the atom.

    • D. 

      Number of its electrons if the atom has a neutral charge.

    • E. 

      Number of protons in the atm, as well as number of its electrons if the atom has a neutral charge.

  • 4. 
    Which of the subatomic particles contributes almost no weight to an atom?
    • A. 

      Protons in the electron shells

    • B. 

      Electrons in the nucleus

    • C. 

      Neutrons in the nucleus

    • D. 

      Electrons at various energy levels

  • 5. 
    Isotopes of the same element differ from each other only by the number of neutrons.
    • A. 

      True

    • B. 

      False

  • 6. 
    The periodic table does not
    • A. 

      Give information about the various elements.

    • B. 

      Indicate the number of protons and the number of valence electrons.

    • C. 

      Indicate whether an elements forms ionic or covalent bonds.

    • D. 

      A useful role in chemistry today. Atoms React with One Another to Form Molecules

  • 7. 
    The rule stating that the outer electron shell is most stable when it contains eight electrons is the
    • A. 

      Stability rule.

    • B. 

      Octet rule.

    • C. 

      Atomic rule.

    • D. 

      Shell rule.

  • 8. 
    How many electrons does nitrogen require to fill its outer shell?
    • A. 

      0

    • B. 

      2

    • C. 

      1

    • D. 

      3

  • 9. 
    When an atom gains electrons, it
    • A. 

      Forms a negatively charged ion.

    • B. 

      Forms a positively charged ion

    • C. 

      Forms covalent bonds.

    • D. 

      Gains atomic mass.

  • 10. 
    An atom that has two electrons in the outer shell, such as calcium, would most likely
    • A. 

      Share to acquire a completed outer shell.

    • B. 

      Lose these two electrons and become a negatively charged ion.

    • C. 

      Lose these two electrons and become a positively charged ion.

    • D. 

      Bind with carbon by way of hydrogen bonds

    • E. 

      Bind with another calcium atom to satisfy its energy needs.

  • 11. 
    Molecules held together by _______ bonds tend to dissociate in biological systems due to the water content in those systems.
    • A. 

      Covalent

    • B. 

      Hydrogen

    • C. 

      Ionic

    • D. 

      Nitrogen

  • 12. 
    Which type of bond results from the sharing of electrons between atoms?
    • A. 

      Covalent

    • B. 

      Hydrogen

    • C. 

      ionic

    • D. 

      Neutral

  • 13. 
    In the molecule CH4,
    • A. 

      All atoms have eight electrons in the outer shell.

    • B. 

      All atoms are sharing electrons.

    • C. 

      Carbon could accept more hydrogen atoms.

    • D. 

      All of these are correct.

  • 14. 
    In which of these are the electrons always shared unequally?
    • A. 

      Double covalent bond

    • B. 

      Polar covalent bond

    • C. 

      Triple covalent bond

    • D. 

      Ionic and covalent bonds

    • E. 

      Hydrogen bond