Welcome to the Electronic Frontier Classroom of the 21st Century.  All living things are made up one or more cells. Beginning in the 17th century, curious naturalists were able to use microscopes to study objects too small to be seen with the unaided eye. You will be provided with an unlimited number of attempts to gain knowledge and test-taking skills. Each attempt randomly selects new questions and answers.
   I wish you well in your biology studies involving cell function and structures of animal and plant cells.
   GOOD LUCK!
 

5 Sample Questions

A light microscope uses optical lenses to magnify objects by....

  • A. bending light rays.
  • B. bending electron beams.
  • C. reflecting beams of light.
  • D. reflecting beams of electrons.

A prokaryote is an organism that lacks a nucleus and membrane-bound organelles.

  • A. True
  • B. False

Cells are limited in size by the ...

  • A. rate at which substances needed by the cell can enter
  • B. rate which the cell can manufacture genetic information
  • C. amount of material the cell can collect to fill itself
  • D. amount of cell membrane the cell can produce

Cells that have a  high energy requirement generally have many....

  • A. nuclei
  • B. flagella
  • C. mitochondria
  • D. microfilaments

Cilia can be distinguished from flagella by which characteristic?

  • A. Both are hairlike projections from plasma membrane
  • B. Cilia are shorter
  • C. Flagella are found in the centrosome.
  • D. Both hairlike organelles are located in the lysosome.

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