Biochemistry Quiz Questionsand Answers

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Biochemistry Quiz Questionsand Answers

Biochemistry quiz review. For me.


Questions and Answers
  • 1. 
    Characteristic(s) of carbon that contribute to its ability to form diverse organic molecules include
    • A. 

      Ability to bond up to four other atoms

    • B. 

      Capacity to form single and double bonds

    • C. 

      Ability to bond and form branched skeletons

    • D. 

      All of the above

  • 2. 
    If a lipid is a solid at room temperature, you would predict
    • A. 

      All lipids are solids at room temperature

    • B. 

      The lipid is saturated

    • C. 

      The lipid is unsaturated

    • D. 

      There is not enough information

  • 3. 
    Which, if any, of the following choices does not properly pair an organic compound with one of its building blocks?
    • A. 

      Nucleic acid -- nucleotide

    • B. 

      Polysaccharide -- monosaccharide

    • C. 

      Fat -- peptide

    • D. 

      All are paired correctly

  • 4. 
    • A. 

      Radioactive nitrogen

    • B. 

      Radioactive carbon

    • C. 

      Radioactive oxygen

    • D. 

      Radioactive sulfur

  • 5. 
    Fat accumulates in our bodies when we overeat. This is because ________.
    • A. 

      Lipids are found only in plants

    • B. 

      Lipids are a form of long-term energy storage

    • C. 

      Lipids are important for cell membranes

    • D. 

      Lipids have enzymatic activity

  • 6. 
    Carbohydrates ____________.
    • A. 

      Have the general chemical formula CH2O

    • B. 

      Function as an energy source

    • C. 

      Can exist as monomers (monosaccharides) and polymers (polysaccharides)

    • D. 

      All of the above

  • 7. 
    Liquid water shows __________.
    • A. 

      Heat resistance

    • B. 

      Polarity

    • C. 

      Cohesion

    • D. 

      All of the above

  • 8. 
    Atoms share electrons unequally in a(n) ___________ bond.
    • A. 

      Polar covalent

    • B. 

      Hydrogen

    • C. 

      Ionic

    • D. 

      Non polar covalent

  • 9. 
    How are macromolecules synthesized?
    • A. 

      Hydrolysis of polymers

    • B. 

      Hydrolysis of monomers

    • C. 

      Dehydration using monomers

    • D. 

      Dehydration using polymers

  • 10. 
    The molecule H2SO4 has a solution that would be _________.
    • A. 

      Acidic, as there are more OH- than H+ ions

    • B. 

      Acidic, as there are more H+ than OH- ions

    • C. 

      Basic, as there are more OH- than H+ ions

    • D. 

      Basic, as there are more H+ than OH- ions

  • 11. 
    The tendency of water molecules to stick together _________.
    • A. 

      Acts to moderate temperature

    • B. 

      Provides surface tension that allows insects to walk on water

    • C. 

      Keeps waver moving through the vessels in a tree trunk

    • D. 

      All of the above

  • 12. 
    What type of bond is joining the two hydrogen atoms?
    • A. 

      Hydrogen

    • B. 

      Covalent

    • C. 

      Hydrogen

    • D. 

      Hydrophobic

  • 13. 
    Isotopes are __________.
    • A. 

      Atoms with unequal number of protons and neutrons

    • B. 

      Atoms with equal number of protons and electrons

    • C. 

      Atoms with same number of protons, but different number of neutrons

    • D. 

      None of the above

  • 14. 
    Which of these is NOT a lipid?
    • A. 

      Cholesterol

    • B. 

      Wax

    • C. 

      Steroids

    • D. 

      RNA

  • 15. 
    Carbohydrates are mainly used in our bodies:
    • A. 

      Structural molecules, such as hair

    • B. 

      For membrane construction

    • C. 

      As fuel

    • D. 

      For building genetic material

  • 16. 
    • A. 

      Preserving and expressing genetic information

    • B. 

      Storing energy in fat cells

    • C. 

      Speeding up chemical reactions

    • D. 

      Forming long fibers, like hair

  • 17. 
    An acid is characterized as a substance that ____________.
    • A. 

      Removes hydrogen ions from solutions

    • B. 

      Donates hydrogen ions to solutions

    • C. 

      Is a versatile solvent

    • D. 

      Forms covalent bonds with other substances

  • 18. 
    In a hydrogen bond, a covalently bound hydrogen atom weakly attracts a(n) _________ atom in a different molecule or a different region of the same molecule
    • A. 

      Electropositive

    • B. 

      Electronegative

    • C. 

      Electromagnetic

    • D. 

      Neutral

  • 19. 
    Proteins are polymers of __________.
    • A. 

      Nucleotides

    • B. 

      Hydrocarbons

    • C. 

      Glycerol

    • D. 

      Amino acids

  • 20. 
    The atomic mass of an element is a weighted average of all of the different ____________ of Lithium.
    • A. 

      Ions

    • B. 

      Isomers

    • C. 

      Isotopes

    • D. 

      Compounds

  • 21. 
    A nucleotide is composed of:
    • A. 

      Phosphate group, nitrogen containing base, and a hydrocarbon

    • B. 

      Glycerol, nitrogen containing base, and a five carbon sugar

    • C. 

      Phosphate group, nitrogen containing base, and a five carbon sugar

    • D. 

      Amino acid, a nitrogen containing base, and a five carbon sugar

  • 22. 
    • A. 

      Nucleotide

    • B. 

      Fatty acid

    • C. 

      Simple sugar

    • D. 

      Amino acid

  • 23. 
    • A. 

      Nucleotide

    • B. 

      Fatty acid

    • C. 

      Simple sugar

    • D. 

      Amino acid

  • 24. 
    • A. 

      Nucleotide

    • B. 

      Fatty acid

    • C. 

      Simple sugar

    • D. 

      Amino acid

  • 25. 
    • A. 

      Nucleotide

    • B. 

      Fatty acid

    • C. 

      Simple sugar

    • D. 

      Amino acid