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5 Written questions

5 Matching questions

  1. Describe a chemical bond?
  2. What is a positive feedback mechanism?
  3. What are the mucous membranes and where are they located?
  4. Name some ways the body uses homeostasis?
  5. Describe a Hydrogen bond?
  1. a Line the body tracts open to the environment
    ---respiratory , digestive, urinary and reproductive
    ---mucus keeps the living epithelium we and provides lubrication in the digestive tract
    ---traps dust and bacteria in the respiratory tract
  2. b Force or attraction between positive and negative charges that keeps atoms closely together
  3. c does not involve the sharing of electrons but results in hydrogen atoms
    (ex: water molecules are attracted to nearby water molecules to form surface tension)
  4. d Positive and negative feedback mechanisms
  5. e the response to stimuli does not stop but rather keeps the sequence of events going. (requires an external brake)
    EX: cervical stretching during childbirth

5 Multiple choice questions

  1. synthesis reactions: bonds are formed to join two or more atoms to make a new compound
    (ex: proteins are sythesized by the bonding of many amino acids)
    decomposition reactions: bonds are broken and a large molecule is changed to two or more smaller ones
    (ex: digestion of starch into many smaller glucose molecules)
  2. diffusion of water through a selectively permeable membrane. water will move from an area with more present to an area with less water present. takes place in the kidneys which reabsorb large amounts of water. FOR WATER
  3. secretion of an endocrine gland that has effects on target organs
    (ex: Insulin - enables cells to take in glucose and lowers glucose levels. Growth hormone - increases protein synthesis and cell division)
  4. Spinal vertebre
  5. 1. Epithelial membranes
    2. Connective Tissue membranes

5 True/False questions

  1. What is hypotonic?A solution with lower salt concentration than in the cells
    (cells burst) MORE WATER THAN IN CELL

          

  2. What is isotonic?A solution with the same salt concentration as in cells

          

  3. What is mitosis?Cell division involving one cell with the diploid number of chromosomes dividing into two identical cells.
    (used for repair of tissues and growth of the organism)

          

  4. What is contained in the thoracic cavity?Heart and lungs

          

  5. What are the two main body cavities and what is contained in them?Nucleus is within the cytoplasm and has a nuclear membrane with nucleoli and chromosomes of the cell. Nucleolus is where DNA and all genetic info for human traits lies.

          

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