Cells Chemical Compounds and Environment

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Author:
TGoodman
ID:
169827
Filename:
Cells Chemical Compounds and Environment
Updated:
2012-09-09 15:04:52
Tags:
Cells chemical compounds pvms science 7th grade colyer
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Description:
A study guide for Ms. Colyer's 7th grade class at Powell Valley Middle School.
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  1. An ______________ is any substance that cannot be broken down into any simpler substance.

    A. compound
    B. protein
    C. carbohydrate
    D. element
    D. element
    (this multiple choice question has been scrambled)
  2. A _______________ is produced from two or more chemically combined elements.

    A. compound
    B. element
    C. protein
    D. carbohydrate
    A. compound
    (this multiple choice question has been scrambled)
  3. The smallest unit of an element is an __________ .

    A. atom
    B. lipid
    C. molecule
    D. protein
    A. atom
    (this multiple choice question has been scrambled)
  4. The smallest unit of a compound is a _____________ . 

    A. molecule
    B. protein
    C. lipid
    D. atom
    A. molecule
    (this multiple choice question has been scrambled)
  5. Most compounds in living things contain the element ____________.

    A. carbon
    B. salt
    C. water
    D. sugar
    A. carbon
    (this multiple choice question has been scrambled)
  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. carbohydrates
    B. nucleic acids
    C. proteins
    D. salt
    E. lipids
    D. salt
    (this multiple choice question has been scrambled)
  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 _____________.

    A. enzymes
    B. nucleic acids
    C. lipids
    D. amino acids
    D. amino acids
    (this multiple choice question has been scrambled)
  11. About how many different amino acids can be combined in any number of ways to make up different kinds of proteins?

    A. 20
    B. 10
    C. 25
    D. 15
    E. 5
    A. 20
    (this multiple choice question has been scrambled)
  12. What type of protein speeds up chemical reactions?

    A. water
    B. lipid
    C. enzyme
    D. oil
    C. enzyme
    (this multiple choice question has been scrambled)
  13. Is a CARBOHYDRATE a type of ORGANIC compound?

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

    A. sugar and starch
    B. sugar and water
    C. sugar and wax
    D. starch and oil
    E. sugar and oil
    A. sugar and starch
    (this multiple choice question has been scrambled)
  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?

    A. oils
    B. fats
    C. sugars
    D. waxes
    C. sugars
    (this multiple choice question has been scrambled)
  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. nuclear elements
    B. nuclear molecules
    C. nucleic acids
    D. nucleic carbohydrates
    C. nucleic acids
    (this multiple choice question has been scrambled)
  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.

    A. proteins
    B. water
    C. air
    D. sugar
    B. water
    (this multiple choice question has been scrambled)
  21. A cell membrane is _______________ permeable.

    A. always
    B. selectively
    C. never
    D. occasionally
    B. selectively
    (this multiple choice question has been scrambled)
  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?

    A. active transport
    B. diffusion
    C. collusion
    D. osmosis
    C. collusion
    (this multiple choice question has been scrambled)
  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.

    A. diffraction
    B. osmosis
    C. active transport
    D. collusion
    B. osmosis
    (this multiple choice question has been scrambled)
  26. The movement of materials through a cell membrane WITHOUT using energy is called ______________.

    A. passive transport
    B. diffusion
    C. osmosis
    D. active transport
    A. passive transport
    (this multiple choice question has been scrambled)
  27. The momvement of materials through a cell membrane by using energy to do so is called ___________________.

    A. osmosis
    B. passive transport
    C. active transport
    D. diffusion
    C. active trnasport 
    (this multiple choice question has been scrambled)

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