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Cells - The Units of Life

Practice Test
  1.What type of instrument is used to look at cells?  
  a.   glasses  
  b.   binoculars  
  c.   microscope  
  d.   telescope  
  2.What is the smallest unit of life in all living things called?  
  a.   bacteria  
  b.   an atom  
  c.   a molecule  
  d.   a cell  
  3.What is the function of a nerve cell?  
  a.   to contract and relax muscles  
  b.   to receive and deliver messages  
  c.   to store fat  
  d.   to form a protective layer for your body  
  4.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  
  5.Which type of cell forms a protective layer for your body?  
  a.   skin cell  
  b.   nerve cell  
  c.   muscle cell  
  d.   fat cell  
  6.Which of the following does NOT have organelles?  
  a.   bacteria  
  b.   algae  
  c.   plants  
  d.   fungi  
  7.Cytoplasm is made mostly of _________.  
  a.   water  
  b.   chemicals  
  c.   gelatin  
  d.   vitamins  
  8.Put the level of organization in order from smallest to largest.  
  a.   organ system, organs, tissues, and cells  
  b.   cells, tissues, organs, and organ systems  
  c.   cells, organs, tissues, and organ systems  
  d.   organs, tissues, cells, and organ system  
  9.What determines which traits an organism will have?  
  a.   DNA  
  b.   the nucleus  
  c.   cytoplasm  
  d.   the mitochondrion  
  10.Blood is considered a(n) __________.  
  a.   cell  
  b.   tissue  
  c.   organ  
  d.   organ system  
  11.Plants, algae, and many bacteria make their own food through the process of __________.  
  a.   digestion  
  b.   metabolism  
  c.   cellular respiration  
  d.   photosynthesis  
  12.What object did Robert Hooke first observe cells in?  
  a.   a leaf  
  b.   a cork  
  c.   a bacterium  
  d.   a muscle  
  13.Which two structures do plant cells have that animal cells do not have?  
  a.   cell membrane and a nucleus  
  b.   chloroplasts and a cell wall  
  c.   vacuoles and chloroplasts  
  d.   chromosomes and chlorophyll  
  14.What part of the cell helps control what enters and leaves the cell?  
  a.   mitochondrion  
  b.   cell membrane  
  c.   nucleus  
  d.   cytoplasm  
  15.If a group of organs work together to perform a specific job, what are they called?  
  a.   tissue systems  
  b.   an organism  
  c.   an organ system  
  d.   helper organs  
  16.Which of the following is NOT an organ?  
  a.   skin  
  b.   the heart  
  c.   bones  
  d.   blood tissue  
  17.Where is the hereditary material located in the cell?  
  a.   the vacuole  
  b.   the mitochondrion  
  c.   the cell membrane  
  d.   the nucleus  
  18.Which of the following are the smallest organisms on Earth?  
  a.   algae  
  b.   shrimp  
  c.   bacteria  
  d.   mold  
  19.The statement that all cells come from cells that already exist is part of __________.  
  a.   Hooke's theory  
  b.   the reproductive theory  
  c.   the cell theory  
  d.   the fossil record  
  20.Which of these is similar in function to a vacuole?  
  a.   a bakery manager  
  b.   a closet  
  c.   an electric circuit  
  d.   a wall  

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