Biology II Ch. 6 Testing Yourself in Text
Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Exergonic reactions
a. | always make use of ATP | b. | defy the second law of
thermodynamics | c. | release energy and occur spontaneously | d. | all of these are
correct |
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2.
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Enzymes
a. | make it possible for cells to escape the need for energy | b. | are noprotein
molecules that help coenzymes | c. | are not affected by a change in
pH | d. | lower the energy of activation |
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3.
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An allosteric site on an enzyme is
a. | the same as the active site | b. | where ATP attaches and gives up its
energy | c. | often involved in feedback inhibition | d. | all of these are
correct |
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4.
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A high temperature
a. | can effect the shape of an enzyme | c. | makes cells less susceptible to
disease | b. | lowers the energy of activation | d. | both a and c are
correct |
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5.
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Electron transport systems
a. | are found in both mitochondria and chloroplasts | b. | release energy as
electrons are transferred | c. | are involved in the production of
ATP | d. | all of these are correct |
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6.
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The difference between NAD+ and NADP+ is that
a. | only NAD+ production requires niacin in the diet | b. | one contains
high-energy phosphate bonds and the other does not | c. | one carries electrons to the electron transport
system and the other carries them to synthetic reactions | d. | all of these are
correct |
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7.
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ATP
a. | is used only in animal cells and not plant cells | b. | carries energy
between exergonic pathways and endergonic pathways | c. | is needed for chemical work, mechanical work,
and transport work | d. | both B and C are
correct |
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8.
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Chemiosmosis is dependent upon
a. | the diffusion of water across a differentially permeable membrane | b. | an outside supply of
phosphate and other chemicals | c. | the establishment of an electrochemical
hydrogen ion (H+) gradient | d. | the ability of ADP to join with P even in the
absence of a supply of energy |
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Matching
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Question #9 a. | enzyme-substrate
complex | b. | active site | c. | product | d. | enzyme | e. | substrates |
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9.
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Picture A
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10.
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Picture B
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11.
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Picture C
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12.
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Picture D
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13.
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Picture E
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14.
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Picture F
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Question #10 a. | H+ pump in electron transport
system | f. | high H+ concentration | b. | ADP | g. | ATP | c. | low H+
concentration | h. | energy from
electron transfers | d. | P | i. | H+ | e. | ATP synthase
complex |
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15.
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Picture A
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16.
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Picture B
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17.
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Picture C
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18.
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Picture D
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19.
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Picture E
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20.
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Picture F
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21.
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Picture G
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22.
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Picture H
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23.
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Picture I
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Completion
24-33 go with Understanding the Terms on page 112
Word
Bank is on page 112 You dot have to spell the words inside the (
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24.
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Understanding the Terms
A.
All of the chemical reactions that occur in a cell during growth and repair.
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25.
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B. Nonprotein adjunct required by an enzyme in order to function; many
are metal ions, others are coenzymes
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26.
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C. Energy associated with motion.
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27.
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D. Essential requirement in the diet; needed in small amounts. They are
often coenzymes.
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28.
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E. Loss of an enzyme’s normal shape so that it no longer functions;
caused by a less than optimal ph and temperature.
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29.
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F. Measure of disorder or randomness.
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30.
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G. Mechanism by which an enzyme is rendered inactive by combining with
the product of the reaction or metabolic pathway.
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31.
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H. Nonprotein organic molecule that aids the action of the enzyme to
which it is loosely bound.
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32.
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I. Nucleotide with two phosphate groups that can accept another phosphate
group and become ATP.
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33.
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J. Organic catalyst, usually a protein, that speeds up a reaction in
cells due to its particular shape.
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