edHelper.com
Life Science
Plant and Animal Cells
Amoeba



Amoeba
Reading Level
     edHelper's suggested reading level:   grades 5 to 8
     Flesch-Kincaid grade level:   7.95

Vocabulary
     challenging words:    amoeba, amoebic, fission, paramecium, protist, shape-shifters, unicellular, engulf, cytoplasm, nucleus, well-known, detection, dysentery, tactics, various, particularly


Print Amoeba
     Print Amoeba  (font options, pick words for additional puzzles, and more)


Quickly Print
     Quickly print reading comprehension


Proofreading Activity
     Print a proofreading activity


Feedback on Amoeba
     Leave your feedback on Amoeba  (use this link if you found an error in the story)



Amoeba
By Cindy Grigg
  

1     Living things are made of cells. Some things consist of only one cell. They are called unicellular organisms. One of the simplest living things, an amoeba, is made of only one cell. Amoebas (sometimes spelled amebas or amoebae) are too small to be seen without a microscope, but they are commonly found in ponds and lakes. They are "shape-shifters" that sometimes appear as a round blob, sometimes appear to have feet, and sometimes appear to have arms that can surround their food. Amoebas are characterized by their flowing movements, considered to be the most primitive form of animal locomotion, or movement. Some are well-known parasites of plants, animals, and humans. It should be noted that amoeba are not animals; however, they are classified in the protist kingdom.
 
2     An amoeba's single cell appears to be not much more than cytoplasm held together by a flexible cell membrane. Floating in this cytoplasm, several kinds of cell bodies can be found. The most easily identified is the nucleus. Some species have only one nucleus; others may have hundreds of nuclei. The nucleus or nuclei control the growth and reproduction of the amoeba. Amoebas reproduce by fission, or splitting in two. The "parent" cell divides into two smaller copies of itself. The nucleus also divides into two. The cell membrane allows oxygen from the water the amoeba lives in to come into the cell and carbon dioxide to pass out of the cell. In this way, the amoeba "breathes."
 
3     Amoebas are able to change their shapes. They can extend parts of themselves into what are called pseudopodia and then flow in the direction in which they wish to go. Pseudopodia means "false feet." If they find something to eat, they can engulf it with their pseudopodia and pull themselves around it to digest it. They can "ooze" and surround their food by making their cytoplasm more liquid and able to flow.

Paragraphs 4 to 7:
For the complete story with questions: click here for printable



Weekly Reading Books

          Create Weekly Reading Books

Prepare for an entire week at once!


Life Science
             Life Science


Plant and Animal Cells
             Plant and Animal Cells


Science
             Science


    Careers in Science  
 
    Caring for Earth  
 
    Clouds  
 
    Dinosaurs  
 
    Earth's Land  
 
    Earth  
 
    Earthquakes  
 
    Electricity  
 
    Energy  
 
    Erosion  
 
    Food Pyramid  
 
    Food Webs and Food Chain  
 
    Forces and Motion  
 
    Fossils  
 
    Health and Nutrition  
 
    How Things Work  
 
    Landforms  
 
    Life Science  
 
    Light  
 
 
    Magnets  
 
    Matter  
 
    Natural Disasters  
 
    Photosynthesis  
 
    Plant and Animal Cells  
 
    Plants  
 
    Rocks and Minerals  
 
    Science Process Skills  
 
    Seasons  
 
    Simple Machines  
 
    Solar System  
 
    Sound  
 
    Space and Stars  
 
    Tsunami  
 
    Volcanoes  
 
    Water Cycle  
 
    Water  
 
    Weather  
 


More Activities, Lesson Plans, and Worksheets


Back to School
Graphic Organizers
Alphabet Worksheets
Sight Words
Math Worksheets
Mazes
50 States

Monthly Themes
January
February
March
April
May
June
July
August
September
October
November
December

Fractions
Place Value
Time and Calendar
Money
Earth Day
Solar System
Analogies
Nouns
Following Directions
Listening
Capitalization
Cursive Writing
Patterns and Sequencing
Dinosaurs
All About Me

Kindergarten
First Grade
Second Grade
Third Grade
Fourth Grade
Fifth Grade
Sixth Grade

Multiplication
Division
Main Idea
Cause and Effect
Measurement
Decimals
Rounding
Order of Operations
Verbs
Community Helpers
Adjectives
Plants
Grammar
Addition and Subtraction
Contractions
Bulletin Board Ideas
Word Searches
Crossword Puzzles
Printable Puzzles

Reading Comprehension
Reading Skills
English Language Arts





Copyright © 2011 edHelper