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0654 Cells & Cell Processes Quiz

Jeffrey Piggott 23 Fragen 5.878 Aufrufe

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Fragen in diesem Quiz (23)

  1. 1 One cell structure found in ALL plant cells but never in animal cells is the:
    1. AA nucleus
    2. BB cell membrane
    3. CC cell wall
    4. DD mitochondrion
  2. 2Which statement below about plant and animal cells is correct?
    1. AA Animal cells are usually bigger than plant cells.
    2. BB Most animal cells have an irregular shape because they do not have a cell wall.
    3. CC Only animal cells rely on their cell membrane for controlling the movement of substances into and
      out of the cell.
    4. DD Both types of cells contain chloroplasts.
  3. 3Which statement about DIFFUSION is NOT CORRECT?
    1. AA It is the net movement of substances from a region of higher concentration to a region of lower
      concentration against a concentration gradient.
    2. BB The rate at which diffusion occurs into or out of a cell is affected by the surface:volume ratio of the
      cell.
    3. CC Diffusion is responsible for the movement of both food into and wastes out of many single-celled
      organisms.
    4. DD Molecules can only move in one direction when a substance is diffusing into or out of a cell.
  4. 4 Which statement about OSMOSIS is NOT CORRECT?
    1. AA Osmosis is a special type of diffusion.
    2. BB Osmosis always involves the movement of water .
    3. CC Osmosis is only possible if there is a semipermeable membrane separating solutions of different
      concentrations.
    4. DD In osmosis solute particles move from regions of higher concentration to regions of lower
      concentration.
  5. 5An ENZYME is:
    1. AA Any substance which acts as a catalyst.
    2. BB A protein which acts on a specific substrate by means of its active site.
    3. CC Any substance which assists in the breakdown of food.
    4. DD A special type of cell that has a part called the "active site".
  6. 6Which of the following is the best definition of the term "nutrition"?
    1. AA Taking in of organic substances and mineral ions containing the raw materials and energy for
      growth and repair.
    2. BB Obtaining the nutrients - proteins,carbohydrates, amino acids, vitamins and minerals, needed for a
      healthy diet.
    3. CC Taking in of organic substances and mineral ions containing the raw materials and energy for
      growth and repair, and absorbing and assimilating them.
    4. DD Removal from organisms of toxic materials which were produced as wastes.
  7. 7The ability to detect or sense changes in the environment (stimuli) and to make responses is known as:
    1. AA responsivity
    2. BB sensitivity
    3. CC reactivity
    4. DD adaptability
  8. 8Which of the following is the best explanation as to why there is a limit to the size that cells can grow to?
    1. AA Bigger cells require more nutrients and energy to survive.
    2. BB The bigger a cell, the smaller its surface area to volume ratio and the slower materials diffuse into or out of the cell.
    3. CC Even with cell walls, cells cannot support themselves once they get bigger than a certain size.
    4. DD One cell can only perform limited functions, it is better to have many cells with different types of
      cells performing different functions.
  9. 9"Active transport" is the movement of:
    1. AA molecules from a region of their higher concentration to a region of their lower concentration.
    2. BB particles from a region of lower concentration to a region of higher concentration using energy from respiration.
    3. CC urine by relaxation of a sphincter muscle in the bladder.
    4. DD water through a partially permeable membrane from a more dilute to a more concentrated
      solution.
  10. 10The diagram shows an experiment to demonstrate the movement of molecules.
    After one hour, the water in the beaker turned red.

    What is the most likely reason for this colour change?    Bild zu Frage 10
    1. AA Molecules of red ink move through the membrane by diffusion.
    2. BB Molecules of red ink move through the membrane by osmosis.
    3. CC Molecules of water move through the membrane by diffusion.
    4. DD Molecules of water move through the membrane by osmosis.

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Beschreibung
Quiz for 0645 Coordinated Sciences on cells and cell processes.
Sprache
English
Aufrufe
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