Cell And Molecular Biology Practice Test

46 Questions | Attempts: 5179

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Cell And Molecular Biology Practice Test - Quiz

How strong your cellular and molecular biology is? What if you get a wonderful chance to assess your knowledge regarding the same? Take this practice test and improve your understanding of molecular biology. Cell and molecular biology is a field of science that deals with the study of the structure and function of the cell. Are you highly interested to learn about these processes? Here is the quiz for that. Give it a try and see what you already know about molecular biology.


Questions and Answers
  • 1. 
    When subunits called monomers are bonded together, they form larger molecules called polymers. Proteins are a type of polymer. What is the monomer that makes up proteins?
    • A. 

      Amino acids

    • B. 

      Ions

    • C. 

      DNA

    • D. 

      Nucleotides

  • 2. 
    During photosynthesis, plants convert carbon dioxide and water to sugar and oxygen. In this reaction, sugar and oxygen are the;
    • A. 

      Enzymes

    • B. 

      Products

    • C. 

      Directions

    • D. 

      Reactants

  • 3. 
    What distinguishes one element from another?
    • A. 

      The number of protons in the nuclei of their atoms

    • B. 

      The number of atoms in a sample of each element

    • C. 

      The number of electrons in the nuclei of their atoms

    • D. 

      The number of nuclei in their atoms

  • 4. 
    How is an ionic bond formed between two atoms?
    • A. 

      A pair of electrons is shared between two atoms.

    • B. 

      The outer energy levels of the atoms are filled.

    • C. 

      An electrical force forms between pairs of electrons.

    • D. 

      An electrical force forms between oppositely charged ions.

  • 5. 
    What term describes the sugar in a glass of lemonade?
    • A. 

      Solvent

    • B. 

      Solution

    • C. 

      Solute

    • D. 

      Protein

  • 6. 
    What elements make up a carbohydrate?
    • A. 

      Carbon, nitrogen, and hydrogen

    • B. 

      Carbon, hydrogen, and oxygen

    • C. 

      Starches and sugars

    • D. 

      Carbon, hydrogen, nitrogen, and oxygen

  • 7. 
    How is a saturated fatty acid different from an unsaturated fatty acid?
    • A. 

      Saturated fatty acids contain at least one carbon-carbon double bond.

    • B. 

      Saturated fatty acids are found only in oils.

    • C. 

      Carbons in saturated fatty acids are bonded together only with covalent bonds.

    • D. 

      Saturated fatty acids contain only carbon-carbon single bonds.

  • 8. 
    What term describes the amount of energy that must be absorbed before a chemical reaction can start?
    • A. 

      Bond energy

    • B. 

      Activation energy

    • C. 

      Endothermic energy

    • D. 

      Exothermic energy

  • 9. 
    What are the parts that make up the lock-and-key model of enzyme function?
    • A. 

      Enzyme and products

    • B. 

      Enzyme and catalyst

    • C. 

      Enzyme and substrates

    • D. 

      Enzyme and active site

  • 10. 
    How does a catalyst affect the activation energy of a chemical reaction?
    • A. 

      It raises the activation energy of the reaction.

    • B. 

      It lowers the activation energy of the reaction.

    • C. 

      It has no effect on the activation energy of the reaction.

    • D. 

      First it lowers the activation energy to start the reaction, then it raises the activation energy to keep the reaction under control.

  • 11. 
    What term describes the reactants that an enzyme acts on?
    • A. 

      Substrate

    • B. 

      Lock-and-key

    • C. 

      Product

    • D. 

      Active site

  • 12. 
    Which conditions are likely to affect the shape of an enzyme?
    • A. 

      Concentration of substrate

    • B. 

      Temperature

    • C. 

      PH

    • D. 

      Both temperature and pH

  • 13. 
    Acidic solutions have a pH that is
    • A. 

      Less than 7

    • B. 

      Between 7 and 14

    • C. 

      A negative number

    • D. 

      More than 7

  • 14. 
    All organic compounds contain the element
    • A. 

      Carbon

    • B. 

      Nitrogen

    • C. 

      Calcium

    • D. 

      Sodium

  • 15. 
    The molecule below is a 
    • A. 

      Lipid

    • B. 

      Carbohydrate

    • C. 

      Protein

    • D. 

      Nucleic acid

  • 16. 
    The following molecules are mirror images of each other.  What is the term for this?
    • A. 

      Structural Isomers

    • B. 

      Stereoisomers

    • C. 

      Equivalents

    • D. 

      Nonequivalents

  • 17. 
    What is the correct term for the energy releasing graph below?
    • A. 

      Endothermic

    • B. 

      Exothermic

    • C. 

      Kinetic

    • D. 

      Passive

  • 18. 
    What is the correct term for the energy gaining graph below?
    • A. 

      Endothermic

    • B. 

      Exothermic

    • C. 

      Kinetic

    • D. 

      Passive

  • 19. 
    The graph below shows a catalyzed reaction vs. an uncatalyzed reaction.  Which of the following statements is true about the graph?
    • A. 

      The Catalyst lowers the energy needed for the reaction to proceed.

    • B. 

      The Catalyst raises the energy needed for the reaction to proceed.

    • C. 

      The Catalyst does not affect the reaction.

    • D. 

      The reaction will not work without the catalyst

  • 20. 
    Which term describes the tendency of a water molecule to stick to another water molecule?
    • A. 

      Cohesion

    • B. 

      Adhesion

    • C. 

      Density

    • D. 

      Bouyancy

  • 21. 
    Which term describes the tendency of a water molecule to stick to different types molecules?
    • A. 

      Cohesion

    • B. 

      Adhesion

    • C. 

      Density

    • D. 

      Bouyancy

  • 22. 
    The diagram below shows a water molecule.  What do the charges on either end of the molecule indicate about the molecule?
    • A. 

      Water is a polar molecule.

    • B. 

      Water is a nonpolar molecule.

    • C. 

      Water is an ionic compound.

    • D. 

      Water is an ion.

  • 23. 
    What structure is found in plant cells but not in animal cells?
    • A. 

      Nucleus

    • B. 

      Vesicle

    • C. 

      Vacuole

    • D. 

      Cell wall

  • 24. 
    What materials makes up a cell membrane?
    • A. 

      Phospholipids and proteins

    • B. 

      Cholesterol and nucleic acids

    • C. 

      Proteins, nucleic acids, and cholesterol

    • D. 

      Phospholipids, cholesterol, and proteins

  • 25. 
    What type of receptor is within a cell?
    • A. 

      Membrane receptor

    • B. 

      Intercellular receptor

    • C. 

      Intracellular receptor

    • D. 

      Ligand receptor

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