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Cells - The Units of Life

Practice Test
  1.What part of the cell helps control what enters and leaves the cell?  
  a.   cytoplasm  
  b.   mitochondrion  
  c.   cell membrane  
  d.   nucleus  
  2.If a group of organs work together to perform a specific job, what are they called?  
  a.   helper organs  
  b.   tissue systems  
  c.   an organ system  
  d.   an organism  
  3.What type of instrument is used to look at cells?  
  a.   telescope  
  b.   glasses  
  c.   microscope  
  d.   binoculars  
  4.Which of the following is NOT an organ?  
  a.   skin  
  b.   bones  
  c.   blood tissue  
  d.   the heart  
  5.What object did Robert Hooke first observe cells in?  
  a.   a muscle  
  b.   a bacterium  
  c.   a leaf  
  d.   a cork  
  6.Cytoplasm is made mostly of _________.  
  a.   vitamins  
  b.   water  
  c.   chemicals  
  d.   gelatin  
  7.What is the smallest unit of life in all living things called?  
  a.   bacteria  
  b.   a molecule  
  c.   a cell  
  d.   an atom  
  8.Which of the following does NOT have organelles?  
  a.   fungi  
  b.   plants  
  c.   bacteria  
  d.   algae  
  9.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  
  10.Chloroplasts capture energy from the __________ to make food.  
  a.   Sun  
  b.   soil  
  c.   stored sugar  
  d.   Moon  
  11.Which two structures do plant cells have that animal cells do not have?  
  a.   chloroplasts and a cell wall  
  b.   vacuoles and chloroplasts  
  c.   cell membrane and a nucleus  
  d.   chromosomes and chlorophyll  
  12.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.   2 times its actual size  
  c.   200 times its actual size  
  d.   2,000 times its actual size  
  13.Where is the hereditary material located in the cell?  
  a.   the nucleus  
  b.   the vacuole  
  c.   the mitochondrion  
  d.   the cell membrane  
  14.Blood is considered a(n) __________.  
  a.   cell  
  b.   tissue  
  c.   organ system  
  d.   organ  
  15.Plants, algae, and many bacteria make their own food through the process of __________.  
  a.   cellular respiration  
  b.   metabolism  
  c.   digestion  
  d.   photosynthesis  
  16.What determines which traits an organism will have?  
  a.   the nucleus  
  b.   the mitochondrion  
  c.   DNA  
  d.   cytoplasm  
  17.Where does cellular respiration occur?  
  a.   in the lungs  
  b.   in the vacuole  
  c.   in the chloroplasts  
  d.   in the mitochondrion  
  18.Which of the following is an organ?  
  a.   blood tissue  
  b.   stomach  
  c.   nerve tissue  
  d.   muscle tissue  
  19.Cells that form a system through which water, food, and other materials move in a plant are __________.  
  a.   brick shaped  
  b.   block shaped  
  c.   long and tubelike  
  d.   round  
  20.Which type of cell forms a protective layer for your body?  
  a.   muscle cell  
  b.   skin cell  
  c.   fat cell  
  d.   nerve cell  

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