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Fig. 5-00
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On the platform, the diver has more potential energy.
Fig. 5-01 On the platform, the diver has more potential energy. Climbing the steps converts kinetic energy of muscle movement to potential energy. Diving converts potential energy to kinetic energy. In the water, the diver has less potential energy.
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Energy conversion in a car
Fig. 5-02 Fuel rich in chemical energy Waste products poor in chemical energy Energy conversion Heat energy Carbon dioxide Water Gasoline Oxygen Combustion Kinetic energy of movement Energy conversion in a car Heat energy Cellular respiration Carbon dioxide Water Food Oxygen ATP Energy for cellular work Energy conversion in a cell
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Fig. 5-03 Food Food Calories Activity Food Calories consumed per
hour by a 150-pound person* Cheeseburger 295 Running (7min/mi) 979 Spaghetti with sauce (1 cup) 241 Dancing (fast) 510 Baked potato (plain, with skin) 220 Bicycling (10 mph) 490 Fried chicken (drumstick) 193 Swimming (2 mph) 408 Bean burrito 189 Walking (3 mph) 245 Pizza with pepperoni (1 slice) 181 Dancing (slow) 204 Peanuts (1 ounce) 166 Playing the piano 73 Apple 81 Driving a car 61 Garden salad (2 cups) 56 Sitting (writing) 28 Popcorn (plain, 1 cup) 31 *Not including energy necessary for basic functions, such as breathing and heartbeat Broccoli (1 cup) 25 (a) Food Calories (kilocalories) in various foods (b) Food Calories (kilocalories) we burn in various activities
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Food Food Calories (a) Food Calories (kilocalories) in various foods
Fig. 5-03a Food Food Calories Cheeseburger 295 Spaghetti with sauce (1 cup) 241 Baked potato (plain, with skin) 220 Fried chicken (drumstick) 193 Bean burrito 189 Pizza with pepperoni (1 slice) 181 Peanuts (1 ounce) 166 Apple 81 Garden salad (2 cups) 56 Popcorn (plain, 1 cup) 31 Broccoli (1 cup) 25 (a) Food Calories (kilocalories) in various foods
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Food Calories consumed per hour by a 150-pound person*
Fig. 5-03b Activity Food Calories consumed per hour by a 150-pound person* Running (7min/mi) 979 Dancing (fast) 510 Bicycling (10 mph) 490 Swimming (2 mph) 408 Walking (3 mph) 245 Dancing (slow) 204 Playing the piano 73 Driving a car 61 Sitting (writing) 28 *Not including energy necessary for basic functions, such as breathing and heartbeat (b) Food Calories (kilocalories) we burn in various activities
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Energy Triphosphate Diphosphate Adenosine P P P Adenosine P P P
Fig. 5-04 Energy Triphosphate Diphosphate Adenosine P P P Adenosine P P P Phosphate (transferred to another molecule) ATP ADP
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(a) Motor protein performing mechanical work
Fig. 5-05 Motor protein ATP ADP P ADP P Protein moved (a) Motor protein performing mechanical work Transport protein Solute P P ATP ADP P Solute transported (b) Transport protein performing transport work P ATP X P X Y ADP P Y Reactants Product made (c) Chemical reactants performing chemical work
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ATP ADP P ADP P Protein moved
Fig. 5-05a Motor protein ATP ADP P ADP P Protein moved (a) Motor protein performing mechanical work
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P P ATP ADP P Solute transported
Fig. 5-05b Transport protein Solute P P ATP ADP P Solute transported (b) Transport protein performing transport work
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P ATP X P X Y ADP P Y Reactants Product made
Fig. 5-05c P ATP X P X Y ADP P Y Reactants Product made (c) Chemical reactants performing chemical work
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Cellular respiration: chemical energy harvested from fuel molecules
Fig. 5-06 ATP Cellular respiration: chemical energy harvested from fuel molecules Energy for cellular work ADP P
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Enzyme Reactant Reactant Energy level Energy level Products Products
Fig. 5-07 Activation energy barrier Activation energy barrier reduced by enzyme Enzyme Reactant Reactant Energy level Energy level Products Products (a) Without enzyme (b) With enzyme
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Reactant Energy level Products
Fig. 5-07a Activation energy barrier Reactant Energy level Products (a) Without enzyme
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Enzyme Reactant Energy level Products
Fig. 5-07b Activation energy barrier reduced by enzyme Enzyme Reactant Energy level Products (b) With enzyme
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Fig. 5-08 Gene for lactase Gene duplicated and mutated at random
Mutated genes (mutations shown in orange) Mutated genes screened by testing new enzymes Genes coding for enzymes that show new activity Genes coding for enzymes that do not show new activity Genes duplicated and mutated at random Ribbon model showing the polypeptide chains of the enzyme lactase Mutated genes screened by testing new enzymes After seven rounds, some genes code for enzymes that can efficiently perform new activity.
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(mutations shown in orange)
Fig. 5-08a Gene for lactase Gene duplicated and mutated at random Mutated genes (mutations shown in orange) Mutated genes screened by testing new enzymes Genes coding for enzymes that show new activity Genes coding for enzymes that do not show new activity Genes duplicated and mutated at random Mutated genes screened by testing new enzymes After seven rounds, some genes code for enzymes that can efficiently perform new activity.
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Ribbon model showing the polypeptide chains of the enzyme lactase
Fig. 5-08b Ribbon model showing the polypeptide chains of the enzyme lactase
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molecule of its substrate. Active site
Fig Sucrase can accept a molecule of its substrate. Active site Enzyme (sucrase) H2O
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molecule of its substrate. Active site
Fig Substrate (sucrose) Sucrase can accept a molecule of its substrate. Active site Substrate binds to the enzyme. Enzyme (sucrase)
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Substrate (sucrose) H2O
Fig Substrate (sucrose) Sucrase can accept a molecule of its substrate. Active site Substrate binds to the enzyme. Enzyme (sucrase) H2O The enzyme catalyzes the chemical reaction.
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Substrate (sucrose) Fructose H2O Glucose
Fig Substrate (sucrose) Sucrase can accept a molecule of its substrate. Active site Substrate binds to the enzyme. Enzyme (sucrase) Fructose H2O Glucose The products are released. The enzyme catalyzes the chemical reaction.
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(a) Enzyme and substrate binding normally Substrate Active site
Fig. 5-10 (a) Enzyme and substrate binding normally Substrate Active site Enzyme Substrate Inhibitor (b) Enzyme inhibition by a substrate imposter Active site Enzyme Substrate (c) Enzyme inhibition by a molecule that causes the active site to change shape Active site Inhibitor Enzyme
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(a) Enzyme and substrate binding normally
Fig. 5-10a Substrate Active site Enzyme (a) Enzyme and substrate binding normally
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(b) Enzyme inhibition by a substrate imposter
Fig. 5-10b Inhibitor Substrate Active site Enzyme (b) Enzyme inhibition by a substrate imposter
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(c) Enzyme inhibition by a molecule that
Fig. 5-10c Substrate Active site Inhibitor Enzyme (c) Enzyme inhibition by a molecule that causes the active site to change shape
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Enzymatic activity Cytoplasm Fibers of extracellular matrix
Fig. 5-11 Enzymatic activity Cytoplasm Fibers of extracellular matrix Cell signaling Attachment to the cytoskeleton and extracellular matrix Cytoplasm Cytoskeleton Transport Intercellular joining Cell-cell recognition
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(a) Passive transport of one type of molecule
Fig. 5-12 Molecules of dye Membrane Net diffusion Net diffusion Equilibrium (a) Passive transport of one type of molecule Net diffusion Net diffusion Equilibrium Net diffusion Net diffusion Equilibrium (b) Passive transport of two types of molecules
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(a) Passive transport of one type of molecule
Fig. 5-12a Molecules of dye Membrane Net diffusion Net diffusion Equilibrium (a) Passive transport of one type of molecule
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(b) Passive transport of two types of molecules
Fig. 5-12b Net diffusion Net diffusion Equilibrium Net diffusion Net diffusion Equilibrium (b) Passive transport of two types of molecules
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Hypotonic solution Hypertonic solution Sugar molecule Selectively
Fig Hypotonic solution Hypertonic solution Sugar molecule Selectively permeable membrane Osmosis
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Hypotonic solution Hypertonic solution Isotonic solutions Osmosis
Fig Hypotonic solution Hypertonic solution Isotonic solutions Osmosis Sugar molecule Selectively permeable membrane Osmosis
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Animal cell H2O H2O H2O H2O Normal Lysing Shriveled Plant cell Plasma
Fig. 5-14 Animal cell H2O H2O H2O H2O Normal Lysing Shriveled Plant cell Plasma membrane H2O H2O H2O H2O Flaccid (wilts) Turgid Shriveled (a) Isotonic solution (b) Hypotonic solution (c) Hypertonic solution
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H2O H2O Normal H2O H2O Flaccid (wilts)
Fig. 5-14a Animal cell H2O H2O Normal Plant cell H2O H2O Flaccid (wilts) (a) Isotonic solution
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Fig. 5-14b H2O Lysing H2O Turgid (b) Hypotonic solution
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H2O Shriveled H2O Shriveled
Fig. 5-14c H2O Shriveled Plasma membrane H2O Shriveled (c) Hypertonic solution
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Fig. 5-15
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Lower solute concentration
Fig Lower solute concentration Solute ATP Higher solute concentration
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Lower solute concentration
Fig Lower solute concentration Solute ATP Higher solute concentration
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Fig. 5-17 Outside of cell Plasma membrane Cytoplasm
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Fig. 5-18
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Fig. 5-19 Outside of cell Cytoplasm Reception Transduction Response
Receptor protein Hydrolysis of glycogen releases glucose for energy Proteins of signal transduction pathway Epinephrine (adrenaline) from adrenal glands Plasma membrane
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Proteins of signal transduction pathway
Fig. 5-19a Outside of cell Cytoplasm Reception Transduction Response Receptor protein Hydrolysis of glycogen releases glucose for energy Proteins of signal transduction pathway Epinephrine (adrenaline) from adrenal glands Plasma membrane
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Fig. 5-20
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Energy for cellular work
Fig. 5-UN01 Energy for cellular work ATP cycle Adenosine P P P Adenosine P P P Phosphate ATP ADP Adenosine diphosphate Adenosine triphosphate Energy from organic fuel
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Activation energy Enzyme added Reactant Reactant Products Products
Fig. 5-UN02 Activation energy Enzyme added Reactant Reactant Products Products
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Facilitated diffusion Osmosis Higher solute concentration
Fig. 5-UN03 MEMBRANE TRANSPORT Passive Transport (requires no energy) Active Transport (requires energy) Diffusion Facilitated diffusion Osmosis Higher solute concentration Higher water concentration (lower solute concentration) Higher solute concentration Solute Solute Solute Water Solute ATP Lower solute concentration Lower water concentration (higher solute concentration) Lower solute concentration
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Exocytosis Endocytosis
Fig. 5-UN04 Exocytosis Endocytosis
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