AP Biology Test #2 Molecules And Cells

75 Questions | Total Attempts: 562

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AP Biology Test #2 Molecules And Cells

Multiple Choice: Choose the BEST answer form the choices given.


Questions and Answers
  • 1. 
    Carbohydrate-containing layer at the surface of the plasma membrane
    • A. 

      Glycocalyx

    • B. 

      Cholesterol

    • C. 

      Triglyceride

    • D. 

      Phospholipid

    • E. 

      Protein

  • 2. 
    The process taking place in the diagram below is
    • A. 

      Osmosis

    • B. 

      Facilitated diffusion

    • C. 

      Cyclosis

    • D. 

      Pinocytosis

    • E. 

      Exocytosis

  • 3. 
    Refer to the molecule below
    • A. 

      This molecule is used to transport oxygen in the blood

    • B. 

      Starch is a polymer of this molecule

    • C. 

      This is a sterol found in cell membranes and is associated with atherosclerosis

    • D. 

      This molecule could result from the hydrolysis of a protein

    • E. 

      None of the above

  • 4. 
    Refer to the molecule below
    • A. 

      This molecule is used to transport oxygen in the blood

    • B. 

      Starch is a polymer of this molecule

    • C. 

      This is a sterol found in cell membranes and is associated with atherosclerosis

    • D. 

      This molecule could result from the hydrolysis of a protein

    • E. 

      None of the above

  • 5. 
    Refer to the molecule below
    • A. 

      This molecule is used to transport oxygen in the blood

    • B. 

      Starch is a polymer of this molecule

    • C. 

      This is a sterol found in cell membranes and is associated with atherosclerosis

    • D. 

      This molecule could result from the hydrolysis of a protein

    • E. 

      None of the above

  • 6. 
    Refer to the molecule below
    • A. 

      This molecule is used to transport oxygen in the blood

    • B. 

      Starch is a polymer of this molecule

    • C. 

      This is a sterol found in cell membranes and is associated with atherosclerosis

    • D. 

      This molecule could result from the hydrolysis of a protein

    • E. 

      None of the above

  • 7. 
    Refer to the molecule below
    • A. 

      This molecule could result from the hydrolysis of a protein

    • B. 

      This molecule is used to transport oxygen in the blood

    • C. 

      This is a sterol found in cell membranes and is associated with atherosclerosis

    • D. 

      This molecule could result from the hydrolysis of a protein

    • E. 

      None of the above

  • 8. 
    The process taking place below is called
    • A. 

      Endocytosis

    • B. 

      Pinocytosis

    • C. 

      Phagocytosis

    • D. 

      Exocytosis

    • E. 

      Cyclosis

  • 9. 
    The process taking place below is called
    • A. 

      Endocytosis

    • B. 

      Exocytosis

    • C. 

      Active transport

    • D. 

      Passive transport

    • E. 

      Facilitated diffusion

  • 10. 
    From the appearance of the TURGID CELL, it can be concluded that
    • A. 

      The environment is hypertonic to the cell

    • B. 

      The environment is hypotonic to the cell

    • C. 

      The cell is hypotonic to the environment

    • D. 

      Solute concentration of the environment is greater than the solute concentration of the cell

    • E. 

      The cell and the environment are isotonic to each other

  • 11. 
    If the concentration of the FLACCID CELL is 2% then the solute concentration in the environment of the cell may be
    • A. 

      1.0%

    • B. 

      5.0%

    • C. 

      0.5%

    • D. 

      2.0%

    • E. 

      0.2%

  • 12. 
    When the cell membrane disconnects from the cell wall due to loss of fluid this process is know as
    • A. 

      Crenation

    • B. 

      Cyclosis

    • C. 

      Plasmolysis

    • D. 

      Hemolysis

    • E. 

      Autolysis

  • 13. 
    Refer to the EVENTS listed below and the DIAGRAM that follows: 1 - Guard cells become turgid 2 - Stomata close 3 - Guard cells become flaccid 4 - Stomata open 5 - Ions move into guard cells increasing the solute concentration 6 - Ions leave guard cells decreasing the solute concentration 7 - Water enters guard cells from the epidermal cells 8 - Water leaves guard cells and enters epidermal cells DIAGRAM When the sun rises and a leaf begins the process of photosynthesis, which sequence of events results in the appearance of the stomata as open
    • A. 

      2,1,6,7

    • B. 

      6,8,3,2

    • C. 

      1,6,4,5

    • D. 

      5,7,1,4

    • E. 

      3,7,5,2

  • 14. 
    The ions, whose movement into and out of the guard cells cause the stomata and guard cells to open or close are
    • A. 

      Na+ ions

    • B. 

      OH- ions

    • C. 

      Ca++ ions

    • D. 

      I- ions

    • E. 

      K+ ions

  • 15. 
    Human hair is an example of this type of secondary level protein
    • A. 

      Beta pleated sheet

    • B. 

      Globular protein

    • C. 

      Alpha helix

    • D. 

      Tertiary protein

    • E. 

      None of the above

  • 16. 
    All of the following are considered proteins EXCEPT:
    • A. 

      Antibodies

    • B. 

      Enzymes

    • C. 

      Collagen

    • D. 

      Dehydrogenase

    • E. 

      Steroids

  • 17. 
    All of the following are true amino acids EXCEPT
    • A. 

      They compose all enzymes and some hormones

    • B. 

      They contain an amino group and a carboxyl group

    • C. 

      They can act as buffers

    • D. 

      They are building blocks of steroids

    • E. 

      They are found in hemoglobin

  • 18. 
    Carbon 13 and Carbon 14 are isotopes and therefore have different numbers of
    • A. 

      Electrons

    • B. 

      Neutrons

    • C. 

      Protons

    • D. 

      Electrons and neutrons

    • E. 

      Protons and electrons

  • 19. 
    The biochemical process by which most organisms extract energy from food is known as
    • A. 

      Anabolism

    • B. 

      Saprophytism

    • C. 

      Parasitism

    • D. 

      Commensalism

    • E. 

      Catabolism

  • 20. 
    Cyanide poisoning is fatal within minutes since it binds irreversibly with the active sites of respiratory enzymes.  Cyanide acts as a(an)
    • A. 

      Competitive inhibitor

    • B. 

      Coenzyme

    • C. 

      Allosteric inhibitor

    • D. 

      Allosteric stimulator

    • E. 

      Enzyme cofactor

  • 21. 
    Which of the following is a structural polysaccaride
    • A. 

      Amylose

    • B. 

      Cellulose

    • C. 

      Glycogen

    • D. 

      Amylopectin

    • E. 

      Starch

  • 22. 
    During the synthesis of a polypeptide chain from 40 amino acids, the number of water molecules released is
    • A. 

      40

    • B. 

      42

    • C. 

      25

    • D. 

      39

    • E. 

      80

  • 23. 
    Humans lack the enzyme necessary to digest which of the following carbohydrates?
    • A. 

      Cellulose

    • B. 

      Amylose

    • C. 

      Sucrose

    • D. 

      Lactose

    • E. 

      Maltose

  • 24. 
    The major component of the fluid bilayer of a plasma membrane.
    • A. 

      Glycocalyx

    • B. 

      Cholesterol

    • C. 

      Triglyceride

    • D. 

      Phospholipid

    • E. 

      Protein

  • 25. 
    Carrier molecule in the plasma membrane.
    • A. 

      Glycocalyx

    • B. 

      Cholesterol

    • C. 

      Triglyceride

    • D. 

      Phospholipid

    • E. 

      Protein

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