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Cells - The Units of Life

Practice Test
  1.Groups of similar cells that all do the same sort of work are called __________.  
  a.   cell systems  
  b.   organ systems  
  c.   tissues  
  d.   organs  
  2.Put the level of organization in order from smallest to largest.  
  a.   organ system, organs, tissues, and cells  
  b.   cells, organs, tissues, and organ systems  
  c.   organs, tissues, cells, and organ system  
  d.   cells, tissues, organs, and organ systems  
  3.Which of the following is NOT an organ?  
  a.   the heart  
  b.   skin  
  c.   bones  
  d.   blood tissue  
  4.Which of the following are the smallest organisms on Earth?  
  a.   bacteria  
  b.   shrimp  
  c.   mold  
  d.   algae  
  5.Cytoplasm is made mostly of _________.  
  a.   vitamins  
  b.   water  
  c.   chemicals  
  d.   gelatin  
  6.What part of the cell helps control what enters and leaves the cell?  
  a.   cytoplasm  
  b.   cell membrane  
  c.   nucleus  
  d.   mitochondrion  
  7.What object did Robert Hooke first observe cells in?  
  a.   a muscle  
  b.   a cork  
  c.   a leaf  
  d.   a bacterium  
  8.What is the smallest unit of life in all living things called?  
  a.   a cell  
  b.   an atom  
  c.   bacteria  
  d.   a molecule  
  9.What is the function of a nerve cell?  
  a.   to receive and deliver messages  
  b.   to contract and relax muscles  
  c.   to form a protective layer for your body  
  d.   to store fat  
  10.Blood is considered a(n) __________.  
  a.   tissue  
  b.   cell  
  c.   organ system  
  d.   organ  
  11.The statement that all cells come from cells that already exist is part of __________.  
  a.   the reproductive theory  
  b.   Hooke's theory  
  c.   the fossil record  
  d.   the cell theory  
  12.Which of these is similar in function to a vacuole?  
  a.   a bakery manager  
  b.   a wall  
  c.   an electric circuit  
  d.   a closet  
  13.If a microscope has a lens with a power of 20X, how many times will it magnify something?  
  a.   20 times is actual size  
  b.   200 times its actual size  
  c.   2,000 times its actual size  
  d.   2 times its actual size  
  14.Which type of cell forms a protective layer for your body?  
  a.   skin cell  
  b.   nerve cell  
  c.   muscle cell  
  d.   fat cell  
  15.Which of the following is an organ?  
  a.   blood tissue  
  b.   nerve tissue  
  c.   muscle tissue  
  d.   stomach  
  16.Plants, algae, and many bacteria make their own food through the process of __________.  
  a.   metabolism  
  b.   photosynthesis  
  c.   digestion  
  d.   cellular respiration  
  17.Which two structures do plant cells have that animal cells do not have?  
  a.   chromosomes and chlorophyll  
  b.   vacuoles and chloroplasts  
  c.   chloroplasts and a cell wall  
  d.   cell membrane and a nucleus  
  18.Cells that form a system through which water, food, and other materials move in a plant are __________.  
  a.   brick shaped  
  b.   block shaped  
  c.   round  
  d.   long and tubelike  
  19.What determines which traits an organism will have?  
  a.   the mitochondrion  
  b.   DNA  
  c.   cytoplasm  
  d.   the nucleus  
  20.Where is the hereditary material located in the cell?  
  a.   the nucleus  
  b.   the mitochondrion  
  c.   the cell membrane  
  d.   the vacuole  

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