Biology Chapter 3 Test Part 2

11 Questions | Total Attempts: 305

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Biology Chapter 3 Test Part 2

Biology Chapter 3 test part 2


Questions and Answers
  • 1. 
    Saturated fatty acids and unsaturated fatty acids differ in
    • A. 

      The number of double bonds present.

    • B. 

      Their consistency at room temperature.

    • C. 

      The number of hydrogen atoms present.

    • D. 

      All of these are correct.

  • 2. 
    17. ____________ is the precursor of ____________.
    • A. 

      Estrogen, cholesterol

    • B. 

      Cholesterol, glucose

    • C. 

      Testosterone, cholesterol

    • D. 

      Cholesterol, testosterone and estrogen

  • 3. 
    Which of these is not a lipid?
    • A. 

      Steroid

    • B. 

      Wax

    • C. 

      B. fate. phospholipids

    • D. 

      polysaccharide

  • 4. 
    Nearly all ____________ are ____________.
    • A. 

      Proteins, enzymes

    • B. 

      Enzymes, proteins

    • C. 

      Sugars, monosaccharides

  • 5. 
    The difference between one amino acid and another is found in the
    • A. 

      Amino group.

    • B. 

      Peptide bond.

    • C. 

      Carboxyl group.

    • D. 

      Carbon atoms.

    • E. 

      R group.

  • 6. 
    The joining of two adjacent amino acids is called a a. peptide bond.
    • A. 

      Covalent bond.

    • B. 

      Dehydration reaction.

    • C. 

      All of these are correct.

  • 7. 
    Covalent bonding between R groups in proteins is associated with the ____________ structure.
    • A. 

      Primary

    • B. 

      Tertiary

    • C. 

      Secondary

    • D. 

      None of these are correct.

  • 8. 
    The three- dimensional structure of a protein that contains two or more polypeptides is the
    • A. 

      Primary structure.

    • B. 

      Tertiary structure.

    • C. 

      Secondary structure.

    • D. 

      Quaternary structure.

  • 9. 
    Nucleotides a. are composed of a sugar,
    • A. 

      Nitrogen- containing base, and a phosphate group.

    • B. 

      Are the monomers of fats and polysaccharides.

    • C. 

      Join together by covalent bonding between the bases.

    • D. 

      Are present in both DNA and RNA.

    • E. 

      Nitrogen- containing base, and a phosphate group. As well as are present in both DNA and RNA.

  • 10. 
    Which of the following pertains to an RNA nucleotide, not a DNA nucleotide?
    • A. 

      Contains the sugar ribose

    • B. 

      Contains a nitrogen- containing base

    • C. 

      Contains a phosphate molecule

    • D. 

      Becomes bonded to other nucleotides by condensation

  • 11. 
    ATP
    • A. 

      Is an amino acid.

    • B. 

      Has a helical structure.

    • C. 

      Is a high- energy molecule that can break down to ADP and phosphate.

    • D. 

      Provides enzymes for metabolism.

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