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5 Written questions

5 Matching questions

  1. Describe a chemical bond?
  2. What is hypotonic?
  3. Where is genetic coding found?
  4. What is a buffer and what does it do?
  5. What are the 2 major types of membranes found in the body?
  1. a A buffer system is a chemical or pair of chemicals that minimizes changes in pH by reacting with strong acids or strong bases
    (ex: buffer bonds to H+ ions when body fluid is becoming too acidic or release H+ ions when fluid becomes too alkaline)
  2. b A solution with lower salt concentration than in the cells
    (cells burst) MORE WATER THAN IN CELL
  3. c In the DNA of our chromosomes or our genome. It is found in the cell nucleus.
  4. d Force or attraction between positive and negative charges that keeps atoms closely together
  5. e 1. Epithelial membranes
    2. Connective Tissue membranes

5 Multiple choice questions

  1. Requires energy of mechanical pressure. Water and dissolved materials are FORCED through a membrane from an area of higher PRESSURE to an area of lower PRESSURE
    (Example: formation of tissue fluid and the first step in the formation of urine)
  2. A solution with a higher salt concentration than in the cells
    (cells shrink) LESS WATER THAN IN CELL
  3. Involves loss of electron of one atom and the gaining of an electron on another atom (ex: NaCl or salt)
  4. Catalyst: speed up reactions without the use of external energy or heat
  5. ability of the body to maintain a relatively stable metabolism and to function normally despite changes

5 True/False questions

  1. What are the different kinds of bonding atoms?1. Chemical bonds
    2. Ionic bonds
    3. Covalent bonds
    4. Disulfide and Hydrogen bonds

          

  2. What is the cell nucleus and what is its function?outer boundary of a cell made up of phospholipids, cholesterol and proteins.
    its main job is to protect the cell and acts as a barrier for communication and assists in transport

          

  3. What is cytoplasm?a watery solution (cytosol) of minerals, gases, organic molecules and cell organelles are found. it gives the cell its shape

          

  4. What is a positive feedback mechanism?bodys response to stimuli reverses the stimulus in effect turning it off for a while and keeps the body within normal range

          

  5. What is contained in the spinal cavity?Contains skull and brain (CNS)