Cell Biology & Genetics - Principles Of Cellular Life

25 Questions | Total Attempts: 130

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Cell Biology & Genetics - Principles Of Cellular Life - Quiz

Here is a quiz to prepare you for cell biology class with key concepts such as : Atoms and elements, why electrons matter, atom bonding, water of life, the power of hydrogen, etc. With the knowledge of these fundamental concepts, we turn to the first of life's levels of organisation: atoms and energy.


Questions and Answers
  • 1. 
    Which of the following statements is false?  
    • A. 

      The amount of heat required to raise the temperature of 1g of 1degree celsius water is 1 calorie.

    • B. 

      Water heats up and cools down very quickly.

    • C. 

      Due to hydrogen bonds, water has a high surface tension.

    • D. 

      When water evaporates, it removes heat.

    • E. 

      Large bodies of water has relatively constant temperatures.

  • 2. 
    Your friend Jonathan has a test in 2 minutes and he runs towards you to ask you this question: What do isotopes of the same element have in common? What do you answer him to be correct?
    • A. 

      They have the same number of protons.

    • B. 

      They have the same number of neutrons.

    • C. 

      They have the same mass number.

  • 3. 
    Atoms are tiny particles, the _________ _________ of all substances. 
  • 4. 
    Your friend Maria tells you that the teacher did not correct her test properly. She claims to have a right answer. Is the statement below true or did the teacher really make a mistake? Statement: An element is a pure substance. Each kind consists only of atoms with different number of protons. 
    • A. 

      It is True, the teacher made a mistake.

    • B. 

      It is False, Maria did get the question wrong.

  • 5. 
     What are compounds?
    • A. 

      They are two or more substances that intermingle and thier proportions can vary.

    • B. 

      They are two or more substances that do not bond, but form compounds.

    • C. 

      They are molecules that consist of two or more different elements in proportions that do not vary. They do not bond however.

    • D. 

      They are molecules that consist of two or more different elements in proportions that do not vary. They do bond together.

  • 6. 
    Electronegativity is a measure of an atom's ability to pull electrons from other atoms. It is a measure of charge. 
    • A. 

      True

    • B. 

      False

  • 7. 
    What are some properties of a mixture? 
    • A. 

      2 or more substances intermingle

    • B. 

      The substances form chemical bond.

    • C. 

      Their proportions cannot vary.

    • D. 

      The substances do not form chemical bonds.

    • E. 

      Their proportions can vary.

    • F. 

      They can create strong reactions due to the bonds formed.

    • G. 

      They create molecules as they are mixed.

  • 8. 
     A chemical bond is an ________ _____ that arises between two atoms when their electrons interact.
  • 9. 
    A molecule is formed when two or more atoms of the same different elements join in chemical bonds. 
    • A. 

      True

    • B. 

      False

  • 10. 
    Which type of bonding usually forms stronger bonds? 
    • A. 

      Covalent bonds.

    • B. 

      Ionic bonds.

  • 11. 
     Ionic bonds usually form by the direct transfer of an electron from one atom to another.
    • A. 

      True

    • B. 

      False

  • 12. 
    During a biology lecture, the teacher notices that students are half listening and decides to give a surprise quiz with one question. She writes "Some covalent bonds are nonpolar. What does this mean? "  Which of these answers is correct?
    • A. 

      ....there is a difference in charge between the two ends of such bond.

    • B. 

      ....the atoms participating in the bond are sharing electrons equally.

    • C. 

      ....they are formed between ions with different electronegativity.

  • 13. 
     Polar covalent bonds do not share electrons equally. Such bonds can form between atoms with small differences in electronegativity.
    • A. 

      True

    • B. 

      False

  • 14. 
     Any seperation that pulls the electron a little more towards it ''end'' of the bond so that the atom bears a slightly negative charge making the other bear a positive charge; into distinct positive and and negative regions; is called __________.
  • 15. 
    Evaporation helps liquid water stabilize ___________. 
  • 16. 
    Hydrophilic dissolve easily in water, while hydrophobic substances do not. 
    • A. 

      True

    • B. 

      False

  • 17. 
     Your little sister comes up to you with her homework. She tells you she doesn't understand her bonus question. The question is: What is the difference between solutes and solvents? Can you answer it?
    • A. 

      Solutes dissolve in a solvent.

    • B. 

      Solvents dissolve in a solute.

  • 18. 
    During a test you hear a student bursting with an insight for question #6. The student says: Cohesion breaks water molecules apart! Is the student correct?
    • A. 

      True

    • B. 

      False

  • 19. 
     Mrs. Salvador writes this on the board : pH is a measure of the number of hydrogen ions in a solution. Is she correct?
    • A. 

      True

    • B. 

      False

  • 20. 
     For a solution to be neutral or 7 (numerical form), the number of H+ ions must be the _____ to the number of OH- ions.
  • 21. 
    Joe is in the new laboratory and is told to put up a personalised pH scale. If you were in his position, what range would you use for the pH scale?
    • A. 

      0-7

    • B. 

      7-14

    • C. 

      -7-7

    • D. 

      -7-14

    • E. 

      5-26

    • F. 

      0-14

  • 22. 
    Cellia was in cell biology class when she suddenly fell asleep. The teacher noticed and called upon her. Cellia turns around and asks you the question so you can help her. Question: What do salts release?
    • A. 

      OH- ions.

    • B. 

      H+ ions.

    • C. 

      None of the above.

  • 23. 
     Timothy is trying to help his mom to put away her groceries and tems she bought from the pharmacy. She tells him that she puts them away by seperating the acids from bases. Timothy is given the list of solutions that were bought. Check off the basic solutions.
    • A. 

      Oven cleaner.

    • B. 

      Bananas.

    • C. 

      Gastric fluid.

    • D. 

      Vinegar.

    • E. 

      Lemon juice.

    • F. 

      Ammonia.

    • G. 

      Blood.

    • H. 

      Pure water.

    • I. 

      Tums.

    • J. 

      Beer.

    • K. 

      Egg white.

    • L. 

      Cola.

    • M. 

      Toothpaste.

    • N. 

      Bleach.

    • O. 

      Hair remover.

    • P. 

      Typical rain.

    • Q. 

      Black coffee.

    • R. 

      Bread.

  • 24. 
     Acids release H+ and bases accept H+.
    • A. 

      True

    • B. 

      False

  • 25. 
    Janie was faced with a thief when she crossed the forbidden road. The thief asked her a question about acids and bases! The only way she could escape him was by getting his question correctly. Can you help Jennie escape? The Question: What is a buffer system?
    • A. 

      It keeps a solution within a consistent range of pH.

    • B. 

      It alters the chemical compounds in the solution and makes it more acidic or more basic.

    • C. 

      It acts like a radiosotope and disintegrates the consistent range of pH.

    • D. 

      Polishes rocks and non-living organims' pH.

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