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Cells - The Units of Life

Practice Test
  1.If a microscope has a lens with a power of 20X, how many times will it magnify something?  
  a.   200 times its actual size  
  b.   20 times is actual size  
  c.   2 times its actual size  
  d.   2,000 times its actual size  
  2.The statement that all cells come from cells that already exist is part of __________.  
  a.   the reproductive theory  
  b.   the cell theory  
  c.   the fossil record  
  d.   Hooke's theory  
  3.If a group of organs work together to perform a specific job, what are they called?  
  a.   an organ system  
  b.   helper organs  
  c.   an organism  
  d.   tissue systems  
  4.Which of the following are the smallest organisms on Earth?  
  a.   bacteria  
  b.   mold  
  c.   algae  
  d.   shrimp  
  5.Cells that form a system through which water, food, and other materials move in a plant are __________.  
  a.   round  
  b.   block shaped  
  c.   long and tubelike  
  d.   brick shaped  
  6.Which of the following is NOT an organ?  
  a.   blood tissue  
  b.   bones  
  c.   skin  
  d.   the heart  
  7.Where is the hereditary material located in the cell?  
  a.   the nucleus  
  b.   the mitochondrion  
  c.   the cell membrane  
  d.   the vacuole  
  8.Cytoplasm is made mostly of _________.  
  a.   gelatin  
  b.   water  
  c.   chemicals  
  d.   vitamins  
  9.Blood is considered a(n) __________.  
  a.   tissue  
  b.   organ  
  c.   organ system  
  d.   cell  
  10.Which of these is similar in function to a vacuole?  
  a.   a wall  
  b.   a bakery manager  
  c.   a closet  
  d.   an electric circuit  
  11.What determines which traits an organism will have?  
  a.   cytoplasm  
  b.   the mitochondrion  
  c.   the nucleus  
  d.   DNA  
  12.Put the level of organization in order from smallest to largest.  
  a.   cells, tissues, organs, and organ systems  
  b.   cells, organs, tissues, and organ systems  
  c.   organs, tissues, cells, and organ system  
  d.   organ system, organs, tissues, and cells  
  13.Which of the following is an organ?  
  a.   blood tissue  
  b.   nerve tissue  
  c.   muscle tissue  
  d.   stomach  
  14.What type of instrument is used to look at cells?  
  a.   glasses  
  b.   telescope  
  c.   microscope  
  d.   binoculars  
  15.What is the smallest unit of life in all living things called?  
  a.   an atom  
  b.   bacteria  
  c.   a molecule  
  d.   a cell  
  16.Which of the following does NOT have organelles?  
  a.   plants  
  b.   algae  
  c.   bacteria  
  d.   fungi  
  17.Groups of similar cells that all do the same sort of work are called __________.  
  a.   tissues  
  b.   cell systems  
  c.   organ systems  
  d.   organs  
  18.Chloroplasts capture energy from the __________ to make food.  
  a.   Moon  
  b.   stored sugar  
  c.   Sun  
  d.   soil  
  19.Plants, algae, and many bacteria make their own food through the process of __________.  
  a.   photosynthesis  
  b.   digestion  
  c.   metabolism  
  d.   cellular respiration  
  20.Which two structures do plant cells have that animal cells do not have?  
  a.   chromosomes and chlorophyll  
  b.   chloroplasts and a cell wall  
  c.   cell membrane and a nucleus  
  d.   vacuoles and chloroplasts  

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