Biochemistry And Cell Biology! Hardest Trivia Quiz

40 Questions | Total Attempts: 54

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Biochemistry And Cell Biology! Hardest Trivia Quiz

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Questions and Answers
  • 1. 
    Water has an important stabilizing effect on temperature in living organisms and their environments because as water absorbs heat, much of the energy is used to ____________ instead of raising the temperature.
    • A. 

      Create covalent bonds

    • B. 

      Create hydrogen bonds

    • C. 

      Break surface tension

    • D. 

      Break hydrogen bonds

    • E. 

      Create hydration layers

  • 2. 
    Reactions that use the equivalent of a water molecule to break a molecule into smaller subunits are called
    • A. 

      Equilibrium reactions

    • B. 

      Hydration reactions

    • C. 

      Hydrolysis reactions

    • D. 

      Redox reactions

    • E. 

      Dehydration synthesis reactions

  • 3. 
    Which of these terms is most inclusive?
    • A. 

      Monosaccharide

    • B. 

      Starch

    • C. 

      Polysaccharide

    • D. 

      Disaccharide

    • E. 

      Carbohydrate

  • 4. 
    Which functional group is polar, consists of oxygen and hydrogen, and is a key component of alcohols?
    • A. 

      Carboxyl

    • B. 

      Hydroxyl

    • C. 

      Phosphate

    • D. 

      Amino

    • E. 

      Carboxyl

  • 5. 
    Which functional group is responsible for the coiled shape of DNA?
    • A. 

      Carboxyl

    • B. 

      Hydroxyl

    • C. 

      Phosphate

    • D. 

      Amino

    • E. 

      Carboxyl

  • 6. 
    Which functional group is found in all proteins?
    • A. 

      Carbonyl

    • B. 

      Hydroxyl

    • C. 

      Phosphate

    • D. 

      Amino

  • 7. 
    What kinds of reactions remove the equivalent of a water molecule when subunits are joined to make a larger molecule?
    • A. 

      Equilibrium reactions

    • B. 

      Hydration reactions

    • C. 

      Hydrolysis reactions

    • D. 

      Redox reactions

    • E. 

      Dehydration synthesis reactions

  • 8. 
    Although they have a diversity of structures, all members of this group of organic molecules are primarily nonpolar and thus water-insoluble.
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Nucleic acids

    • D. 

      Carbohydrates

    • E. 

      Amino acids

  • 9. 
    What organic molecules have a chemical formula that is (or is very nearly) a multiple of 1 Carbon atom to 1 Water molecule?
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Nucleic acids

    • D. 

      Carbohydrates

    • E. 

      Amino acids

  • 10. 
    What kind of molecules are monosaccharides and disaccharides?
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Nucleic acids

    • D. 

      Carbohydrates

    • E. 

      Amino acids

  • 11. 
    Which group of organic molecules are held together with peptide bonds?
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Nucleic acids

    • D. 

      Carbohydrates

    • E. 

      Amino acids

  • 12. 
    Probably the most abundant carbohydrate on Earth, this unbranched chain of B-glucose subunits is the primary structural molecule in plant cell walls.
    • A. 

      Chitin

    • B. 

      Amylopectin

    • C. 

      Cellulose

    • D. 

      Glycogen

    • E. 

      Amylose

  • 13. 
    In many animals this polysaccharide is found in large quantities in liver and muscle cells.  It is highly branched.
    • A. 

      Chitin

    • B. 

      Amylopectin

    • C. 

      Cellulose

    • D. 

      Glycogen

    • E. 

      Amylose

  • 14. 
    An amphipathic molecule, such as a soap or detergent,  has
    • A. 

      Two hydrophilic portions

    • B. 

      Two hydrophobic portions

    • C. 

      A hydrophobic and a hydrophilic portion

    • D. 

      Only one hydrophobic portion

    • E. 

      Only one hydrophilic portion

  • 15. 
    In which of the following reactions must the equivalent of a water molecule be added in order to break a bond?
    • A. 

      Fatty acid + glycerol = fat

    • B. 

      Glucose + fructose = sucrose

    • C. 

      Glycogen = glucose

    • D. 

      Alanine + glycine = dipeptide

    • E. 

      Glucose = cellulose

  • 16. 
    Which of these are the main structural components of biological membranes?
    • A. 

      Starches

    • B. 

      Triglycerides

    • C. 

      Proteins

    • D. 

      Phospholipids

    • E. 

      Steroids

  • 17. 
    Which of the following is NOT a major function of proteins in living organisms?
    • A. 

      Speeding up biological reactions

    • B. 

      Transporting substances across membranes

    • C. 

      Providing structural support

    • D. 

      Regulating the activity of other cellular molecules

    • E. 

      Storing genetic information

  • 18. 
    Proteins are polymers of
    • A. 

      Amino acids

    • B. 

      Monosaccharides

    • C. 

      Steroids

    • D. 

      Nucleotides

    • E. 

      Phospholipids

  • 19. 
    What structure is defined as the sequence of amino acids in a protein?
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary

    • E. 

      Globular

  • 20. 
    The structure of a protein that refers to the conformation, or overall three-dimensional shape, of a polypeptide that has been folded into a functional protein...
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary

    • E. 

      Globular

  • 21. 
    Which structure of a protein is determined between the amino acids side groups from two different polypeptide chains?
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary

    • E. 

      Globular

  • 22. 
    Plant cells have one big____ used for storage, but animal cells have lots of small ones.
    • A. 

      Nucleus

    • B. 

      Mitochondria

    • C. 

      Vacuole

    • D. 

      Cytoplasm

  • 23. 
    Excessive heat or extremes of pH often cause denaturation of proteins, which means that the proteins.
    • A. 

      Have fallen apart into individual monomer subunits.

    • B. 

      Are no longer biological molecules.

    • C. 

      Have broken into many separate domains.

    • D. 

      Are no longer in a functional three dimensional structure.

    • E. 

      Are highly reactive.

  • 24. 
    Which description best fits the cell membrane?
    • A. 

      Transparent

    • B. 

      Rigid for support

    • C. 

      Thick and waxy

    • D. 

      Semi-permeable

  • 25. 
    Having many ribosomes attached to it, this organelle produces proteins as well as other substances and then transports them to other parts of the cell
    • A. 

      Rough ER

    • B. 

      Smooth ER

    • C. 

      Nucleolus