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Cells Chemical Compounds and Environment

  1. An ______________ is any substance that cannot be broken down into any simpler substance.




    C. element
  2. A _______________ is produced from two or more chemically combined elements.




    D. compound
  3. The smallest unit of an element is an __________ .




    B. atom
  4. The smallest unit of a compound is a _____________ . 




    A. molecule
  5. Most compounds in living things contain the element ____________.




    B. carbon
  6. Carbon is found in most living things.

    TRUE
    FALSE
    True
  7. Compounds that contain carbon are called organic compounds.

    TRUE
    FALSE
    True
  8. Which of the following IS NOT an important ORGANIC compound.





    A. salt
  9. Compounds that DO NOT contain carbon are called organic compounds.

    TRUE
    FALSE
    FALSE

    Compounds that DO NOT contain carbon are called INORGANIC compounds.
  10. Proteins are made up of smaller molecules called _____________.




    C. amino acids
  11. About how many different amino acids can be combined in any number of ways to make up different kinds of proteins?





    A. 20
  12. What type of protein speeds up chemical reactions?




    C. enzyme
  13. Is a CARBOHYDRATE a type of ORGANIC compound?

    YES
    NO
    YES
  14. Which of the following are examples of CARBOHYDRATES?





    C. sugar and starch
  15. Sugars are produced by __________ during the food making process.

    a. animals
    b. plants
    c. proteins
    d. carbohydrates
    b. plants
  16. Which of the following IS NOT an example of a LIPID?




    B. sugars
  17. Lipids DO NOT store energy.

    TRUE
    FALSE
    FALSE

    Lipids DO store energy.
  18. _______________ contain the instructions that cells need to carry out all the functions of life. 




    A. nucleic acids
  19. What are the three letter abbreviations for the two types of nucleic acids?
    • DNA - deoxyribonucleic acid
    • RNA - ribonucleic acid
  20. Without ____________, most chemical reactions within cells could not take place.




    B. water
  21. A cell membrane is _______________ permeable.




    A. selectively
  22. In relation to a cell membrane, ______________ means that some substances can pass through it while others cannot.

    a. occasionally permeable
    b. selectively permeable
    c. fully permeable
    d. totally permeable 
    b. selectively permeable
  23. Which of the following IS NOT a way that substances can move into or out of a cell?




    C. collusion
  24. ___________ is the process by which molecules tend to move from an area of higher concentration to an area of lower concentration.

    a. osmosis
    b. diffusion
    c. collusion
    d. active transport
    b. diffusion
  25. _____________ is the diffusion of water through a selectively permeable membrane.




    C. osmosis
  26. The movement of materials through a cell membrane WITHOUT using energy is called ______________.




    A. passive transport
  27. The momvement of materials through a cell membrane by using energy to do so is called ___________________.




    D. active trnasport 
Author
TGoodman
ID
169827
Card Set
Cells Chemical Compounds and Environment
Description
A study guide for Ms. Colyer's 7th grade class at Powell Valley Middle School.
Updated

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