Biology 101 (Chapter 4 - Chapter 5) First Exam

42 Questions | Total Attempts: 407

SettingsSettingsSettings
Please wait...
Biology 101 (Chapter 4 - Chapter 5) First Exam

Welcome To Biology 101 Exam Be careful and focus The exam is easy :) GooD Luck 


Questions and Answers
  • 1. 
    All of these are true about " electron configuration" EXCEPT:
    • A. 

      It determines the kind of bonds that an atom will form with other atoms

    • B. 

      It determines the number of bonds that an atom will form with other atoms

    • C. 

      It's the key to an atom's chemical characteristics

    • D. 

      It determines the number of valence electrons

    • E. 

      None of the above

  • 2. 
    One of these is not true about an Carbon atom:
    • A. 

      It has 4 valance electrons

    • B. 

      It has 6 electrons

    • C. 

      It can bound to another carbon atom

    • D. 

      It forms hydrogen bounds by sharing it's 4 electrons

    • E. 

      Two of the above

  • 3. 
    When a Carbon forms 4 single bounds the arrangement of these bounds will be:
    • A. 

      At the same plane

    • B. 

      Tetrahedral shape with 109.5 bond angles

    • C. 

      Tetrahedral shape with 105.9 bond angles

    • D. 

      Two of the above

    • E. 

      None of the above

  • 4. 
    One of theses isn't a frequent bonding partner of Carbon:
    • A. 

      Hydrogen

    • B. 

      Sulfur

    • C. 

      Nitrogen

    • D. 

      Oxygen

    • E. 

      Two of the above

  • 5. 
    Carbon dioxide is often considered inorganic because: 
    • A. 

      It's a very simple molecule

    • B. 

      It lacks nitrogen

    • C. 

      It lacks hydrogen

    • D. 

      It doesn't have single bonds

    • E. 

      Two of the above

  • 6. 
    Carbon can make organic compounds that vary in:
    • A. 

      Length of carbon chains

    • B. 

      Shape

    • C. 

      Number of double bonds

    • D. 

      Location of double bonds

    • E. 

      All of the above

  • 7. 
    Carbon chains Could have all of these forms(shapes) except:
    • A. 

      Open(straight) chain

    • B. 

      Ring chain

    • C. 

      Random chain

    • D. 

      Branched chain

    • E. 

      None of the above

  • 8. 
    The major components of petroleum are:
    • A. 

      Enantiomers

    • B. 

      Hydrocarbons

    • C. 

      Amino acids

    • D. 

      None of the above

  • 9. 
    All of these are characteristics of hydrocarbons(such as fats and gasoline) except:
    • A. 

      Dissolve in water

    • B. 

      Hydrophobic compounds (because the great majority of their bonds are nonpolar carbon to hydrogen linkages)

    • C. 

      Can undergo reactions that release a relatively large amount of energy

    • D. 

      Two of the above

    • E. 

      None of the above

  • 10. 
    Compounds that have the same numbers of atoms of the same elements (same molecular formula) but different structures , is the definition of:
    • A. 

      Structural isomers

    • B. 

      Cis-trans isomers

    • C. 

      Enantiomers

    • D. 

      All of the above

  • 11. 
    The two compounds in that figure are related as:
    • A. 

      Geometric isomers

    • B. 

      Strucural isomers

    • C. 

      Enantiomers

    • D. 

      None of the above

  • 12. 
    One of these statements is TRUE about that figure: 
    • A. 

      It can make cis-trans isomers

    • B. 

      It can make structural isomers

    • C. 

      It can make enantiomers and asymmetric carbons are (b&c)

    • D. 

      It can make enantiomers and asymmetric carbon is (b)

    • E. 

      Two of the above

  • 13. 
    Organic compounds with a sulfhydryl group are known as:
    • A. 

      Alcohols

    • B. 

      Organic acids

    • C. 

      Amines

    • D. 

      Thiols

    • E. 

      Sulfylated compounds

  • 14. 
    One of these statements is false about "Acetone":
    • A. 

      Structural isomer with Propanal

    • B. 

      Simplest ketone

    • C. 

      Has a carboxyl group within the carbon skeleton

    • D. 

      Consist of 3 carbons

    • E. 

      None of the above

  • 15. 
    Amino group is characterized by:
    • A. 

      Charged by (-1) in ionized form

    • B. 

      Acts as an acid

    • C. 

      Can pick up H+ from the water in living organisms

    • D. 

      Includes nitrogen atom

    • E. 

      Two of the above

  • 16. 
    If a polymer with 741 monomers is broken by hydrolysis , this will give us :
    • A. 

      740 monomers

    • B. 

      740 water molecules

    • C. 

      741 water molecules

    • D. 

      None of the above

  • 17. 
    Carbohydrates macromolecules are:
    • A. 

      Polymers called disaccharides composed of many monosaccharides joined by covalent bonds

    • B. 

      Polymers called polysaccharides composed of many monosaccharides joined by hydrogen bonds

    • C. 

      Polymers called polysaccharides composed of many monosaccharides joined by glycosidic linkages

    • D. 

      None of the above

  • 18. 
    The one true about relation between Glucose and Fructose is:
    • A. 

      Both are aldoses

    • B. 

      Structural isomers

    • C. 

      They differ in molecular formula

    • D. 

      Both are hexoses

    • E. 

      Two of the above

  • 19. 
    One of these is an example of a disaccharides:
    • A. 

      Starch

    • B. 

      Amylose

    • C. 

      Galactose

    • D. 

      Lactose

  • 20. 
    Starch is found in planet cells in a structures called "plastids"
    • A. 

      True

    • B. 

      False

  • 21. 
    The best describes the relation between amylose and amylopectin is:
    • A. 

      Both are synthesized in animal cells

    • B. 

      Both are branched

    • C. 

      Both have 1-4 glycosidic linkages and 1-6 glycosidic linkages

    • D. 

      Potato tubers and grains are the major sources of them

    • E. 

      Two of the above

  • 22. 
    Starch and cellulose differ in:
    • A. 

      Function

    • B. 

      Glycosidic linkages

    • C. 

      Three-dimensional shape

    • D. 

      Two of the above

    • E. 

      All of the above

  • 23. 
    β glucose mean that OH group attached to second carbon are above the plane of the glucose ring
    • A. 

      True

    • B. 

      False

  • 24. 
    Cow harbors can digest cellulose by it's enzymes 
    • A. 

      True

    • B. 

      False

  • 25. 
    "insoluble fiber" refers mainly to:
    • A. 

      Chitin

    • B. 

      Cytoskeleton

    • C. 

      Cellulose

    • D. 

      None of the above

Back to Top Back to top