Chapter 2.4-2.5 Quiz Biology I Coach Cardona ID:A

Card Set Information

Author:
ciarra
ID:
290065
Filename:
Chapter 2.4-2.5 Quiz Biology I Coach Cardona ID:A
Updated:
2014-12-01 20:50:49
Tags:
biology 9midterm 9eoc
Folders:

Description:
Chapter 2.4-2.5 Quiz to study for midterm/EOC
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user ciarra on FreezingBlue Flashcards. What would you like to do?


  1. 1. Chemical reactions change substances into different substances by

    A. conserving matter between the substances
    B. strengthening electrical charges of substances
    C. changing a solvent into a solute
    D. breaking and forming chemical bonds
    D. breaking and forming chemical bonds
    (this multiple choice question has been scrambled)
  2. 2. Identify the reactants in the following chemical reaction: 6H2O + 6CO2  ---> C6H12O+ 6O2

    a. 6H2O and 6CO2
    b. 6COand C6H12O6
    c. 6H2O, C6H12O6, and 6O2
    d. C6H12O2 and 6O6
    a. 6H2O and 6CO2
  3. 3. What is the term for the amount of energy that needs to be added for a chemical reaction to start?

    A. chemical energy
    B. activation energy
    C. bond energy
    D. reactant energy
    B. activation energy
    (this multiple choice question has been scrambled)
  4. 4. Which phrase best describes an exothermic reaction?

    A. releases more energy than it absorbs
    B. is in a state of equilibrium
    C. does not absorb any energy
    D. forms products with higher bond energy than reactants
    A. releases more energy than it absorbs
    (this multiple choice question has been scrambled)
  5. 5. Which phrase best describes the effect of a catalyst on a chemical reaction?

    A. increases the temperature
    B. increases the volume of reactants
    C. decreases the reaction rate
    D. decreases the activation energy
    D. decreases the activation energy
    (this multiple choice question has been scrambled)
  6. Which statement best describes the graph shown?

    A. The original reaction is catalyzed.
    B. More energy is released by the original reaction.
    C. Less energy is needed to start reaction B.
    D. Reaction B occurs at a slower rate.
    C. Less energy is needed to start reaction B.
    (this multiple choice question has been scrambled)
  7. 7. Enzymes affect chemical reactions in living organisms by

    A. breaking down all molecules into starch.
    B. weakening bonds in reactants.
    C. changing the direction of a reaction.
    D. increasing the temperature range.
    B. weakening bonds in reactants.
    (this multiple choice question has been scrambled)
  8. 8. Changes in temperature and pH can decrease an enzyme's activity by breaking

    A. amino acids
    B. hydrogen bonds
    C. peptide bonds
    D. sulfur-sulfur bonds
    B. hydrogen bonds
    (this multiple choice question has been scrambled)
  9. 9. The specific reactants that an enzyme acts on are called

    A. amino acids
    B. substrates
    C. catalysts
    D. proteins
    B. substrates
    (this multiple choice question has been scrambled)
  10. 10. One of the most important processes for life on Earth, photosynthesis, is

    A. Endothermic
    B. Exothermic
    C. Proteins
    D. Lipids
    A. Endothermic
    (this multiple choice question has been scrambled)

What would you like to do?

Home > Flashcards > Print Preview