Biomolecules, Enzymes, Digestive System

17 Questions | Total Attempts: 123

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Biomolecules, Enzymes, Digestive System

BIOMOLECULES, ENZYMES, DIGESTIVE SYSTEM


Questions and Answers
  • 1. 
    Which of the following is not typically true about nucleic acids?
    • A. 

      Contain any sugar

    • B. 

      Provide the body with energy

    • C. 

      Carries your genetic makeup

    • D. 

      Contain the elements Carbon, Hydrogen, Phosphorus, Nitrogen, and Oxygen

  • 2. 
    Which of the following is paired incorrectly?
    • A. 

      Carbohydrates-short term energy

    • B. 

      Lipids-contain less Carbons and Hydrogens than carbohydrates

    • C. 

      Protein-enzymes

    • D. 

      Nucleic Acids-DNA, RNA

  • 3. 
    Proteins are formed from amino acids and later used for your hair and nails.  Which statement concerning proteins is not correct?
    • A. 

      The shape of a proteins determine its function.

    • B. 

      Proteins have the elements Carbon, Hydrogen, Oxygen, and Nitrogen.

    • C. 

      Proteins are used to build enzymes.

    • D. 

      Proteins are polymers made by joining simple sugars.

  • 4. 
    Which of the following best describe an enzyme?
    • A. 

      They are made from monosaccharides.

    • B. 

      They are used to speed up a chemical reaction.

    • C. 

      They are non specific and able to work on any substrate.

    • D. 

      They typically work best with a ph of 1

  • 5. 
    Which of following could inhibit an enzyme for functioning properly?i. saltii. temperatureiii.  pH 
    • A. 

      I only

    • B. 

      Ii only

    • C. 

      Iii only

    • D. 

      ALL of the above

  • 6. 
    Several lab test revealed the following data about a molecule, -speeds up a chemical reaction-found in your digestive system-made from proteinsThis molecule is most likely-
    • A. 

      Enzyme

    • B. 

      Carbohydrate

    • C. 

      Glucose

    • D. 

      Hemoglobin

  • 7. 
    The diagram below provides information about a particular molecule.  Which monomer does the diagram belongs to? 
    • A. 

      Monosaccharide

    • B. 

      Nucleic acid

    • C. 

      Glycerol and fatty acids

    • D. 

      Amino acids

  • 8. 
    The diagram below represent which process? 
    • A. 

      Hydrolysis

    • B. 

      Condensation Reaction

    • C. 

      Photosynthesis

    • D. 

      None of the aboe

  • 9. 
    Unlike lipids, nucleic acids specifically has which element?
    • A. 

      Carbon

    • B. 

      Hydrogen

    • C. 

      Phosphorus

    • D. 

      Iron

  • 10. 
      Lactose is found in milk products.  It is converted by the body into a usable form in a series of chemical reactions.  The diagram shows the series of reactions that convert lactose into a usable form.If Enzyme 1 is denatured, which substance would increase.
    • A. 

      Lactose

    • B. 

      Galactose

    • C. 

      Galactose-1-phosphate

    • D. 

      Glucose

  • 11. 
    Which of the following relies on carbohydrates for structure and support? 
    • A. 

      Cell wall in plants

    • B. 

      Cell membrane in all animals

    • C. 

      Mitochondria in animals

    • D. 

      Skin of humans

  • 12. 
    In some communities in Western Africa, protein sources are very hard to come by. What do you expect is the impact of this on the organisms in the area? 
    • A. 

      The organisms are unable to store energy for the future in the case of a drought.

    • B. 

      The organisms have low energy levels and are unable to travel far distances to find other food sources.

    • C. 

      The organisms experience a lot of genetic mutations .

    • D. 

      The organisms have underdeveloped muscles and weak hair, nails, and feathers.

  • 13. 
    Pepsin and trypsin are two of the digestive enzymes that break down proteins.  A group of students studied the pH requirements of these enzymes.  The graph below shows the results.The students found that pepsin functions best in an acid environment and trypsin works best in a more neutral environment.  Based on their observations, pepsin most likely aids in the digestion in what part of the human body? 
    • A. 

      Mouth

    • B. 

      Intestines

    • C. 

      Stomach

    • D. 

      Liver

  • 14. 
    What enzymes helps your body digest starch and also is paired correctly with is location?
    • A. 

      Pepsin, stomach

    • B. 

      Sucrase, small intestine

    • C. 

      Amylase, saliva

    • D. 

      Trypsin; large intestine

  • 15. 
    These contractions assist your digestive system in moving your food down your digestive tract
    • A. 

      Amylase

    • B. 

      Perstalysis

    • C. 

      Pepsin

    • D. 

      Carbohydrates

  • 16. 
    The function of villus in your small intestine aids in decreasing the amount of nutrients absorbed during digestion.
    • A. 

      TRUE (A)

    • B. 

      FALSE (B)

  • 17. 
    Use the following structures for questions 17-20. 
    • A. 

      17. Which of the structures above is the monomer of carbohydrates?

    • B. 

      18. Which of the structures above is used to build polypeptide chains?

    • C. 

      19. Which of the structures above carries your genetic information?

    • D. 

      20. Which structure provides long-term energy storage and insulation for organisms

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