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Cells - The Units of Life

Practice Test
  1.Which of the following are the smallest organisms on Earth?  
  a.   mold  
  b.   shrimp  
  c.   bacteria  
  d.   algae  
  2.The statement that all cells come from cells that already exist is part of __________.  
  a.   the cell theory  
  b.   the fossil record  
  c.   Hooke's theory  
  d.   the reproductive theory  
  3.What object did Robert Hooke first observe cells in?  
  a.   a bacterium  
  b.   a muscle  
  c.   a leaf  
  d.   a cork  
  4.Groups of similar cells that all do the same sort of work are called __________.  
  a.   organs  
  b.   cell systems  
  c.   tissues  
  d.   organ systems  
  5.Chloroplasts capture energy from the __________ to make food.  
  a.   Moon  
  b.   Sun  
  c.   soil  
  d.   stored sugar  
  6.What is the function of a nerve cell?  
  a.   to form a protective layer for your body  
  b.   to contract and relax muscles  
  c.   to store fat  
  d.   to receive and deliver messages  
  7.Which of the following does NOT have organelles?  
  a.   bacteria  
  b.   algae  
  c.   fungi  
  d.   plants  
  8.Which of these is similar in function to a vacuole?  
  a.   an electric circuit  
  b.   a wall  
  c.   a bakery manager  
  d.   a closet  
  9.If a group of organs work together to perform a specific job, what are they called?  
  a.   an organ system  
  b.   helper organs  
  c.   tissue systems  
  d.   an organism  
  10.Where is the hereditary material located in the cell?  
  a.   the nucleus  
  b.   the mitochondrion  
  c.   the cell membrane  
  d.   the vacuole  
  11.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  
  12.What is the smallest unit of life in all living things called?  
  a.   a cell  
  b.   bacteria  
  c.   an atom  
  d.   a molecule  
  13.Where does cellular respiration occur?  
  a.   in the lungs  
  b.   in the vacuole  
  c.   in the chloroplasts  
  d.   in the mitochondrion  
  14.Plants, algae, and many bacteria make their own food through the process of __________.  
  a.   cellular respiration  
  b.   photosynthesis  
  c.   metabolism  
  d.   digestion  
  15.Which two structures do plant cells have that animal cells do not have?  
  a.   cell membrane and a nucleus  
  b.   vacuoles and chloroplasts  
  c.   chloroplasts and a cell wall  
  d.   chromosomes and chlorophyll  
  16.Which type of cell forms a protective layer for your body?  
  a.   muscle cell  
  b.   nerve cell  
  c.   fat cell  
  d.   skin cell  
  17.If a microscope has a lens with a power of 20X, how many times will it magnify something?  
  a.   2 times its actual size  
  b.   2,000 times its actual size  
  c.   200 times its actual size  
  d.   20 times is actual size  
  18.Cells that form a system through which water, food, and other materials move in a plant are __________.  
  a.   long and tubelike  
  b.   round  
  c.   block shaped  
  d.   brick shaped  
  19.What part of the cell helps control what enters and leaves the cell?  
  a.   cell membrane  
  b.   nucleus  
  c.   cytoplasm  
  d.   mitochondrion  
  20.What type of instrument is used to look at cells?  
  a.   binoculars  
  b.   glasses  
  c.   microscope  
  d.   telescope  

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