How does a buffer help a solution maintain pH?
A buffer releases acid to maintain proper pH.
B.
A buffer forms both cations and anions to counteract acids.
C.
A buffer can act like a base if pH is acidic, and it can act like an acid if pH is basic.
D.
A buffer release base to neutralize acid.
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Question 2) Inorganic chemists study substances _______ carbon, while organic chemists study substances _______ carbon.
A.
lacking; containing
B.
containing more than 1 mole of; with less than a mole of
C.
containing; lacking
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Question 3) In order to get energy (ATP) from food molecules in the final stage of respiration, humans require _____.
A.
carbon dioxide
B.
oxygen
C.
sodium
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Question 4) From the following list, select the one organic substance found in the human body.
A.
water
B.
glucose
C.
oxygen
D.
calcium
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Question 5) Identify the material that would NOT be considered an important inorganic substances in our bodies.
A.
carbon
B.
iron
C.
calcium
D.
oxygen
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Question 6) If the ratio of products and reactants are stable, the system is in _______.
A.
activation
B.
steady state
C.
equilibrium
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Question 7) True or false? Synthesis reactions are also called catabolic reactions.
Indicate whether the statement is true or false.
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Question 8) Sucrose is formed when the simple sugars fructose and glucose are covalently bonded. This reaction releases water. What type of reaction is this?
A.
monomeric
B.
hydrolysis
C.
catabolic
D.
dehydration
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Question 9) In an oxidation-reduction reaction, ______ are transferred between molecules
A.
oxygen
B.
electrons
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Question 10) Hydrogen bonds are important for all of the following except:
A.
producing surface tension in water
B.
helping hold DNA strands together
C.
helping atoms give up or receive electrons
D.
helping hold a protein structure together
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