Quiz  /  Proteins Class 12 MCQ Questions With Answers

  • 1. 
    Structural proteins

  • form structures needed in the body
  • are enzymes
  • are fats
  • are not needed for humans to live

  • 2. 
    DNA and RNA are what type of macromolecule?

  • lipids
  • nucleic acids
  • carbohydrates
  • enzymes

  • 3. 
    All proteins

  • have a unique structure that determines their unique function.
  • are exactly the same in function but different in structure.
  • are exactly the same in structure but different in function.
  • are enzymes.

  • 4. 
    Cells must produce many different enzymes because

  • enzymes are quickly used up
  • most cellular reactions require a specific, unique enzyme
  • They have to have some way to use up the protein that they consume
  • enzymes are not very effective at speeding up reactions

  • 5. 
    Enzymes belong to which category of organic molecule?

  • Proteins
  • Lipids
  • Carbohydrates
  • Nucleic acids

  • 6. 
    True or False: Proteins are used to repair and body cells and tissues.

  • True
  • False

  • 7. 
    The monomers of DNA and RNA are

  • nucleotides
  • nucleic acids
  • amino acids
  • monosaccharides

  • 8. 
    Which reaction is needed to break the bond between two amino acids?

  • Dehydration
  • Dehydrogenation
  • Hydration
  • Hydrolysis

  • 9. 
    True or False: Increase muscle mass and strength is a benefit of proteins.

  • True
  • False

  • 10. 
    What elements make up amino acids?

  • Carbon, hydrogen and oxygen only
  • Carbon, hydrogen, oxygen and nitrogen only
  • Carbon, hydrogen and phosphorus only
  • Carbon, hydrogen, nitrogen and oxygen; and sometimes also sulfur

  • 11. 
    What is a long chain of amino acids called?

  • Polysaccharide
  • Lipid
  • Carbohydrate
  • Polypeptide
  • Nucleic acid

  • 12. 
    What are the products in the above chemical equation?

  • carbon dioxide, water, ATP
  • oxygen and glucose
  • carbon dioxide and glucose
  • ATP and oxygen

  • 13. 
    Which of the following foods are high in protein? Check all that apply

  • fish
  • milk & cheese
  • meat (chicken, beef, pork, etc)
  • eggs
  • All of above

  • 14. 
    Which proteins facilitate the communication between different body systems?

  • Signaling
  • Transport
  • Storage
  • Contractile

  • 15. 
    Hemoglobin is a protein that

  • transports oxygen in the blood
  • makes sugar
  • breaks down fats
  • builds muscles

  • 16. 
    What are the monomers of proteins?

  • triglycerides
  • monosaccharides
  • nucleotides
  • amino acids

  • 17. 
    The primary sequence of a protein refers to the:

  • Order of amino acids
  • α-Helix or β-Pleated Sheet
  • Interaction of subunits
  • Hydrogen Bonding

  • 18. 
    Which of these ARE incomplete proteins?

  • Beans
  • Grains
  • Nuts
  • All of the above

  • 19. 
    What conditions usually do not cause denaturation?

  • Extreme heat
  • Extreme pH
  • Dissolving in water

  • 20. 
    What is a protein:

  • A polymer composed of many sugars.
  • A polymer composed of many amino acids.
  • A polymer composed of fatty acids.
  • A polymer composed of nucleotides.

  • 21. 
    What are the monomers that make up proteins?

  • Monosaccharides
  • Amino acids
  • Nucleic acids
  • Fatty acids

  • 22. 
    True or False: Complete proteins DO NOT contain all nine essential amino acids

  • True
  • False

  • 23. 
    What is the complementary protein to broccoli?

  • Brown rice
  • Beans
  • Peanut Butter
  • Whole Wheat bread

  • 24. 
    The sequence of amino acids is determined by:

  • Genes
  • Hydrogen Bonds
  • Like Dissolves Like
  • pH

  • 25. 
    The structure of proteins can be changed by environmental factors such as temperature or pH.

  • True
  • False

  • 26. 
    Another word for protein is

  • nucleic acid
  • carbohydrate
  • lipid
  • polypeptide

  • 27. 
    This is one job proteins do NOT have in the body

  • storing genetic information
  • structure
  • speed up chemical reactions
  • transport things through cell membrane

  • 28. 
    What does an amino acid look like?

  • It's a central carbon with two different groups attached.
  • It's a central carbon with three different groups attached.
  • It's a central carbon with four different groups attached.
  • It's a central carbon with five different groups attached.
Report Question
warning
access_time
  Time