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5 Written questions

5 Matching questions

  1. The activities of a living cell depend on the ability of its membrane to
  2. Three Types of Passive Transport
  3. Cell Membrane Function: A Selective Filter
  4. Hypertonic solution
  5. Brownian Motion
  1. a 1. transport raw materials into the cell (and out of)
    2. transport manufactured products and wastes out of the cell
    3. prevent unwanted matter from entering the cell
    4. prevent the escape of matter needed to perform cellular functions
  2. b Cell membranes are semi-permeable allowing some materials to cross, while excluding others. They can select a) by particle size
    - small enough to enter membrane - O2 H2O
    - too large to cross - sugar
    b) particular materials to transport across (they bind to chemicals based on their size shape or charge)
  3. c in a liquid or gas, particles are in constant, random motion
  4. d has a higher concentration of solute compared to the inside of the cell
  5. e ...

5 Multiple choice questions

  1. a state at which molecules are evenly distributed (the concentration is equal throughout the medium)
    - molecules continue moving but equilibrium is maintained
  2. the difference in concentration between two areas for any given molecule produces a gradient or path of movement in which molecules move toward areas where the concentration of particles is lower
    - molecules move down a concentration gradient
  3. Know and be able to label a phospholipid bilayer diagram
  4. the cell membrane forms a pocket around the material to be transported, then either pinches off as a vesicle or a vacuole.
  5. Loss of water in a plant cell resulting in WILTING

5 True/False questions

  1. Membranes at Work 3. Controlled Delivery of Medicationsfilters toxic wastes that accumulate in the blood while retaining necessary proteins, glucose, amino acids & ions

          

  2. EXOCYTOSISthe cell membrane forms a pocket around the material to be transported, then either pinches off as a vesicle or a vacuole.

          

  3. Particle Model of Matterall matter is made of tiny particles

          

  4. Membranes at Work 2. Kidney Dialysisfilters toxic wastes that accumulate in the blood while retaining necessary proteins, glucose, amino acids & ions

          

  5. Two types of Endocytosis:a) carrier proteins - facilitate the diffusion of glucose across the cell membrane
    b) channel proteins - have tunnel-like pores filled with water that allow charged ions in and out of the cell

          

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