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Cell Biology - Test 3


1. Which of the following organisms is a prokaryote?
    A. amoeba
    B. influenza A virus
    C. charophyte algae
    D. E. coli


2. Peroxisomes got their name because hydrogen peroxide is:
    A. used in their detoxifiation reactions
    B. produced during their oxidation reactions
    C. incorporated into their membranes
    D. a cofactor for the organelles' enzymes


3. In plant cells, the function of lysosomes is carried out by which of the following?
    A. vacuoles
    B. peroxisomes
    C. ribosomes
    D. nuclei


4. Which of the following is both in eukaryotic and prokaryotic cells?
    A. nucleus
    B. ribosomes
    C. vacuole
    D. mitochondrion


5. Which organelle is malfunctioning in the genetic disorder, Tay-Sachs disease?
    A. lysosome
    B. endoplasmic reticulum
    C. peroxisome
    D. mitochondria


6. The process by which a cell engulfs a foreign particle is known as?
    A. endosymbiosis
    B. phagocytosis
    C. hydrolysis
    D. membrane synthesis


7. Which of the following is most likely to have the greatest concentration of smooth endoplasmic reticulum?
    A. a cell that secretes enzymes
    B. a cell that destroys pathogens
    C. a cell that makes steroid hormones
    D. a cell that engages in photosynthesis


8. Which of the following are only in plant cells?
    A. gap junctions
    B. desmosomes
    C. plasmodesmata
    D. tight junctions


9. Which plasma membrane component can be either found on its surface or embedded in the membrane structure?
    A. protein
    B. cholesterol
    C. carbohydrate
    D. phospholipid


10. What is the primary function of carbohydrates attached to the exterior of cell membranes?
    A. identifiation of the cell
    B. flexibility of the membrane
    C. strengthening the membrane
    D. channels through membrane






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