BIOL.

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Author:
dlrudd
ID:
34656
Filename:
BIOL.
Updated:
2010-09-14 14:11:17
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Bio Human
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Description:
Biol Human-Exam One
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  1. In an atom, the number of protons always equals the number of ?
    Electrons
  2. The atomic number of an atom is determined by the number of?
    Protons
  3. These are basic building blocks of matter that cannot be further broken down by ordinary chemicl means?
    Elements
  4. The substance, such as iodine 131 can be used in medicine to produce various images of organs and tissues?
    Tracers
  5. Two of more atoms that combine are defined as?
    molecule
  6. The biologically important properties of water are
    • High heat of vaporization
    • Polarity
    • Water being liquid at room temperature
    • Hydrogen bonding
  7. The building blocks molecules of polysaccharides are?
    Monosaccharides
  8. Proteins are comprised of?
    Amino acids
  9. These are the fundamental units that make up all living things?
    Cells
  10. Choose the correct statement concerning cell surface or volume ratios?
    A.) all of the choices are correct
    B.) volume reflects metabolic needs
    C.) surface area reflects ability to exhange materials
    D.) as the volume increases, relative surface are decreases
    A.) All of the choices are correct
    (this multiple choice question has been scrambled)
  11. The phospholipid bilayer that surrounds/ maintains the integrity of a cell is called a?
    Plasma Membrane
  12. This is the structure found in eukaryotic celss that houses the genetic material?
    Nucleus
  13. The contemporary description of the membrane structure of a cell is know as the ?
    Fluid-mosaic model
  14. Why is cell division imprtant as related to the size of cells?
    cell division restores the amount of surface area needed for exchange requirements
  15. Brad placed a water plant called Elodea in some distilled water. What happened in the cells of the plant?
    A.) turned blue
    B.) shrunk
    C.) did not change
    D.) burst
    The cells burst
  16. If a cell lacked ribosomes, it would not be able to?
    synthesize proteins
  17. Whci one of the following is not part of the cytoskeleton?
    A.) intermediate fliaments
    B.) microfilaments
    C.) microtubules
    D.) microbodies
    D.) microbodies
    (this multiple choice question has been scrambled)
  18. Specialized cells that work together to perform a common function, are called?
    tissues
  19. This tissue bind structures together and provides structural support?
    connective
  20. This involves uncontrollable cell division?
    cancer
  21. In a given population why are carcinomas and leukemiaz occuring at a higer incidence than sarcomas?
    epithelial tissue and blood have a higher rate of cell division
  22. The protein provides flexibility and strength to connective tissues?
    collagen
  23. By dieting you can reduce the number of fat cells your body had?
    True or False
    False
  24. The cartilage can be found at the ends of the long bones, ribs, and respiratory passages?
    hyaline
  25. Fragments of cells that form a plug, sealing holes in injured vessels during blood clotting are?
    platelets
  26. Wes noticed that during an infection, his lymph nodes?
    enlarged
  27. In turning a page, you would mainly be using?
    skeletal muscles

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