Practice Test - Miniunit Beta

  1. (1) The living part (protoplasm) of a cell is made up of two parts, a liquid part (sol) and a solid part (gel). The liquid (sol) is termed:

    a) nucleus
    b) protoplast
    c) cytoplasm
    d) cell wall

  2. (2) Examine the figure and identify: Protein portion of cell membrane.



    a) F
    b) B
    c) C
    d) D

  3. (3) Which of the following macromolecules is not part of the unit membrane.

    a) glycoprotein
    b) protein
    c) phospholipids
    d) nucleic acids

  4. (4) Large particles of food may be taken into the interior of a cell by:

    a) exocytosis
    b) pinocytosis
    c) phagocytosis
    d) plasma desmata

  5. (5) CYTOPLASMIC BRIDGES extending through the cell wall between adjacent cells are termed:

    a) endoplasmic reticulum
    b) desmosomes
    c) plasmodesmata
    d) gap junction
    e) receptor mediated connections

  6. (7) Examine the diagram of a cell annexed to your test. Which letter corresponds to the centriole.

    a) G
    b) P
    c) L
    d) N
    e) A

  7. (8) What is the function of the ribosomes in a working cell?

    a) protein synthesis
    b) respiration
    c) store secretions
    d) photosynthesis

  8. (8) What is the function of lysosomes in a working cell?

    a) store secretions
    b) protein syntehsis
    c) store digesting (hydrolytic) enzymes
    d) photosynthesis
    e) respiration

  9. (9) Examine figure below and identify the part labeled D.



    a) stroma
    b) granum
    c) double membrane
    d) granum thylakoid

  10. (9) Which of the following is not true about the chloroplast?

    a) site of photosynthesis
    b) contains stroma and grana
    c) double membrane
    d) where respiration occurs

  11. (9) Mark the following statements or items as associated.

    Aerobic cellular respiration occurs in this organelle

    a) mitochondria
    b) chloroplasts
    c) both mitochondria and chloroplasts
    d) neither mitochondria or chloroplasts

  12. (11) What is the microtube arrangement of A. centriole B. cilia ? 

               A.        B.
    a) 9(2)+2,     9(3)+0
    b) 9(3)+0,     9(3)+1
    c) 9(3)+0,     9(2)+2
    d) 9(2)+2,     9(2)+2

  13. (10) Cilia, flagella, centrioles and basal bodies are all composed of:

    a) microfilaments
    b) microtubules
    c) phospholipids
    d) cytoskeleton

  14. (12) Structure(s) which may used to move single cell organism through liquid medium.

    a) cilia
    b) flagella
    c) centriole
    d) both cilia and flagella

  15. (14) Higher plant cells are composed of eukaryote cells.

    a) true
    b) false

  16. (14) Mark the following statements as associated:

    MITOCHONDRIA present

    a) prokaryotes
    b) eukaryotes
    c) both prokaryotes and eukaryotes

  17. (15) A tangled, dark-staining, uncoiled network of DNA in the working cell:

    a) chromosomes
    b) nuclear envelope
    c) ribosomes
    d) chromatin

  18. (18) Mark the following statements as associated:

    Movement of WATER molecules across a selective permeable membrane from an area of high water concentration to an area of low water concentration.

    a) diffusion
    b) plasmolysis
    c) active transport
    d) osmosis
    e) none of these

  19. (23) Most of the carbon dioxide is transported through tissue in the form of:

    a) oxygen
    b) carbon dioxide
    c) hemoglobin
    d) bicarbonate ions
    e) plasma

  20. (23) Mark the following statements or descriptions with one of these structures:

    O2 and CO2 picked up or expelled in these small blood vessels.

    a) trachea
    b) alveoli
    c) bronchi
    d) capillaries

  21. (26) The rate of inhalation and exhalation (breathing) is controled by chemoreptors in arterial walls detecting levels of:

    a) oxygen
    c) nitrogen
    b) carbon dioxide and hydrogen ions
    d) iron

  22. (27) Mark the following statement as associated with some protein structure:

    Linear sequence of amino acids which make up a protein.

    a) primary
    b) secondary
    c) tertiary
    d) quaternary

  23. (28) Most chemical reactions which occur within a cell are controled by enzymes.

    a) true
    b) false

  24. (29-30) Place on the enzyme's surface into which the substrate fits:

    a) carrier
    b) active site
    c) lock and key
    d) allosteric interaction

  25. (32) Salivary amylase is responsible for:

    a) breakdown of starches into sugars
    b) breakdown of protein into amino acids
    c) breakdown of fats into fatty acids and glycerol
    d) none of the above
    e) all of the above

  26. (33) Which of these is not a function of HCl in the stomach:

    a) Kills most bacteria and other living cells ingested with the food.
    b) Converts pepsinogen to pepsin.
    c) Increases the activity of amylase
    d) Causes the pH to become low (2-4)

  27. (20) If a differential permeable membrane bag is filled with a 15% salt solution and placed in a beaker containing 5% salt, what would be the correct response?

    a) Net movement of water out of bag
    b) Net movement of water into the bag
    c) No net movement of water

  28. (4) Cellular "drinking" process that pinches off small vacuoles inwardly:

    a) phagocytosis
    b) cyclosis
    c) pinocytosis
    d) exocytosis
    e) none of the above

  29. (19) During active transport protein molecules located in cell membrane may assist the passage of small molecules across the membrane.

    a) true
    b) false

  30. (30) The molecule which an enzyme acts upon is called:

    a) substrate
    b) product
    c) active site

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Last modified October 29, 1997.