Cells and Microscopy

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Author:
dkpequeno
ID:
52812
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Cells and Microscopy
Updated:
2010-12-02 00:16:34
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Biology Final
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Cells and the way they work and microscopes
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  1. What cell type has the least amount of compartmentalization?
    Bacteria
  2. What most limits the resolving power of a light microscope?
    The wavelength of electromagnetic radiation (i.e, light) used to illuminate the specimen
  3. A prokaryotic cell doesn't have
    an endoplasmic reticulum
  4. Transport across a cell membrane in which the cell must use ATP and pushes the compound against a concentration gradient.
    Active Transport
  5. This individual is credited with inventing a simple microscope taht was capable of viewing bacteria. Indeed, he is known as the father of bacteriology.
    van Leewonhoek
  6. Large numbers of ribosomes are present in cells that specialize in producing what molecule?
    Proteins
  7. Plant cells often have a large membrane-bound sac that is used for storing water and other substances. This organelle is a
    Central vacuole
  8. Which structure is the site of the synthesis of proteins that may be exported from the cell?
    Rough ER
  9. What is capable of converting light energy to chemical energy?
    Chloroplasts
  10. What possesses a microtubular structure similar to a basal body?
    Centriole
  11. Fibers that are found in cilia and flagella, and are responsible for chromosome movement during mitosis are
    Microtubules
  12. What is not present in all eukaryotic cells?
    Cell wall
  13. The organelle that can be thought of as a "Mail Box Store" because it modifies and packages compounds for transport is the
    Golgi complex
  14. Cell-cell junctions whose function is to bind the membranes together to produce a relatively impermeable boundary.
    Tight junctions
  15. What is not bounded by organelle membranes?
    Cytoskeleton
  16. Active transport in which two substances are pumped in opposite directions is called
    Antiport
  17. On the outer surface of the plasma membrane there are marker molecules that identify the cell type, and can be recognized by the immune system. These are called
    Antigens
  18. Lipid synthesis occurs in which eukaryotic organelle?
    Smooth ER
  19. For the process of diffusion to occur, molecules must
    Move from areas of high concentration to areas of lesser concentration until an equilibrium is reached
  20. Which structure is the repository of the genetic information that directs all of the activities of the cell?
    Nucleus
  21. Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the
    Cytoskeleton
  22. The process often thought of as "cell eating" is
    Phagocytosis
  23. What is not a characteristic of a cell membrane?
    Rigid structure
  24. What protein classes are not found as membrane proteins?
    Hormones
  25. The chromosomal hereditary material is packaged in this organelle in eukaryotic cells but not in prokaryotic cells. This organelle is
    Nucleus
  26. The function of cholesterol in the cell membrane is primarily
    to strengthen the cell membrane
  27. Assume that the saline concentration inside a cell is 1.0% and the saline concentration in the environment is 5.0% The environment is _____ to the cell interior.
    Hypertonic
  28. What is most likely to be placed on the X-axis of a graph?
    Time
  29. What is the main purpose of a simple statistic?
    Describe the population
  30. What is the main purpose of a parametric statistic?
    Test a hypothesis
  31. What is the purpose of the pores found in the nuclear envelope
    They allow mRNA out of the nucleus
  32. What is the endosymbiosis theory?
    An organelle cam about by a bacteria engulfing another cell
  33. What is the function of Mitochondria?
    Aerobic cellular respiration to make ATP
  34. What are two functions of cell walls?
    • Structure
    • Protect against osmosis
  35. What are three components of the cell theory?
    • Anything living is a cell or consists of cells
    • Nothing less than a cell is living
    • Cells give rise to new cells

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