This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). Here, the condensation reaction specifically involves two glucose molecules forming a disaccharide by releasing water and creating a bond between them. Choice B correctly describes synthesis by recognizing dehydration synthesis joins monomers (water removed, bonds formed) to create polymers, or glucose provides carbons for macromolecules. Choice A fails because it describes hydrolysis instead, where water is added to split molecules, not join them—remember, synthesis builds by dehydrating! Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other; (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites; (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence 'dehydration'); (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond); (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc.; (6) RESULT: polymer chain of linked monomers—each bond required removing one H2O, so for 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water—requires energy, example: many glucose → starch + many H2O; HYDROLYSIS (breaking down): polymer + water → (add water) → monomers—releases energy, example: starch + many H2O → many glucose (digestion uses hydrolysis!)—the terms tell you the direction: dehydration = removing water = building up (synthesis), hydrolysis = adding water = breaking down (digestion); remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis, HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water—these opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). This process repeats: add another glucose (remove another H2O, form another bond), add another (remove water, form bond), continuing until long polymer chains form—starch might have hundreds or thousands of glucose units linked! Beyond carbohydrates, the carbon atoms from glucose can be rearranged (with addition of nitrogen from proteins, phosphorus from nucleic acids) to build ALL types of macromolecules: proteins, lipids, and nucleic acids all use carbon skeletons ultimately derived from glucose produced in photosynthesis. This is why photosynthesis is so fundamental—it provides the basic carbon building blocks for all biological molecules! The plant builds cellulose by linking many glucose monomers into a polysaccharide polymer via dehydration synthesis for cell walls. Choice B correctly describes this synthesis by recognizing cellulose as a polymer built from glucose monomers. Choice A fails by describing breakdown (hydrolysis) instead of synthesis, where polymers are split, not built. Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other. (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites. (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence "dehydration"). (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond). (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc. (6) RESULT: polymer chain of linked monomers. Each bond required removing one H2O. For 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water. Requires energy. Example: many glucose → starch + many H2O. HYDROLYSIS (breaking down): polymer + water → (add water) → monomers. Releases energy. Example: starch + many H2O → many glucose. Digestion uses hydrolysis! The terms tell you the direction: dehydration = removing water = building up (synthesis). Hydrolysis = adding water = breaking down (digestion). Remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis. HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water. These opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). This process repeats: add another glucose (remove another H2O, form another bond), add another (remove water, form bond), continuing until long polymer chains form—starch might have hundreds or thousands of glucose units linked! Beyond carbohydrates, the carbon atoms from glucose can be rearranged (with addition of nitrogen from proteins, phosphorus from nucleic acids) to build ALL types of macromolecules: proteins, lipids, and nucleic acids all use carbon skeletons ultimately derived from glucose produced in photosynthesis. This is why photosynthesis is so fundamental—it provides the basic carbon building blocks for all biological molecules! Cells use glucose carbon to synthesize monomers like amino acids, which then form proteins via dehydration synthesis. Choice B correctly matches amino acids (monomers) to proteins (polymers), aligning with how glucose carbons contribute to building various macromolecules. Choice A fails by incorrectly matching glucose directly as the monomer for DNA, when nucleotides are the actual monomers. Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other. (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites. (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence "dehydration"). (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond). (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc. (6) RESULT: polymer chain of linked monomers. Each bond required removing one H2O. For 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water. Requires energy. Example: many glucose → starch + many H2O. HYDROLYSIS (breaking down): polymer + water → (add water) → monomers. Releases energy. Example: starch + many H2O → many glucose. Digestion uses hydrolysis! The terms tell you the direction: dehydration = removing water = building up (synthesis). Hydrolysis = adding water = breaking down (digestion). Remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis. HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water. These opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). This process repeats: add another glucose (remove another H2O, form another bond), add another (remove water, form bond), continuing until long polymer chains form—starch might have hundreds or thousands of glucose units linked! Beyond carbohydrates, the carbon atoms from glucose can be rearranged (with addition of nitrogen from proteins, phosphorus from nucleic acids) to build ALL types of macromolecules: proteins, lipids, and nucleic acids all use carbon skeletons ultimately derived from glucose produced in photosynthesis. This is why photosynthesis is so fundamental—it provides the basic carbon building blocks for all biological molecules! In general, polymers like polysaccharides are assembled by dehydration synthesis, linking monomers with new bonds and releasing water. Choice A correctly describes polymer formation by linking monomers through synthesis reactions that create bonds and often release water. Choice D fails by suggesting a single monomer becomes a polymer by itself, ignoring the need for multiple monomers. Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other. (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites. (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence "dehydration"). (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond). (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc. (6) RESULT: polymer chain of linked monomers. Each bond required removing one H2O. For 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water. Requires energy. Example: many glucose → starch + many H2O. HYDROLYSIS (breaking down): polymer + water → (add water) → monomers. Releases energy. Example: starch + many H2O → many glucose. Digestion uses hydrolysis! The terms tell you the direction: dehydration = removing water = building up (synthesis). Hydrolysis = adding water = breaking down (digestion). Remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis. HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water. These opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). Building macromolecules from glucose is synthesis because it combines small monomers into larger polymers via bond formation. Choice B correctly describes synthesis by recognizing dehydration synthesis joins monomers (water removed, bonds formed) to create polymers. Choice A fails because synthesis builds up, not breaks down—breaking into smaller pieces is hydrolysis, the opposite process! Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other; (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites; (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence 'dehydration'); (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond); (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc.; (6) RESULT: polymer chain of linked monomers—each bond required removing one H2O, so for 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water—requires energy, example: many glucose → starch + many H2O; HYDROLYSIS (breaking down): polymer + water → (add water) → monomers—releases energy, example: starch + many H2O → many glucose (digestion uses hydrolysis!)—the terms tell you the direction: dehydration = removing water = building up (synthesis), hydrolysis = adding water = breaking down (digestion); remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis, HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water—these opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). In dehydration synthesis, water is released as a product when monomers bond to form the carbohydrate chain. Choice A correctly describes synthesis by recognizing dehydration synthesis joins monomers (water removed, bonds formed) to create polymers, with water produced from H and OH groups. Choice D fails because it confuses with hydrolysis, where water is added to break polymers—water is produced in synthesis, not breakdown! Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other; (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites; (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence 'dehydration'); (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond); (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc.; (6) RESULT: polymer chain of linked monomers—each bond required removing one H2O, so for 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water—requires energy, example: many glucose → starch + many H2O; HYDROLYSIS (breaking down): polymer + water → (add water) → monomers—releases energy, example: starch + many H2O → many glucose (digestion uses hydrolysis!)—the terms tell you the direction: dehydration = removing water = building up (synthesis), hydrolysis = adding water = breaking down (digestion); remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis, HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water—these opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). The plant builds cellulose by linking many glucose molecules through dehydration synthesis to form the structural polymer for cell walls. Choice A correctly describes synthesis by recognizing dehydration synthesis joins monomers (water removed, bonds formed) to create polymers like cellulose. Choice B fails because it describes breakdown, not synthesis—dehydration synthesis builds up by removing water, while breakdown uses hydrolysis to add water and split molecules! Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other; (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites; (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence 'dehydration'); (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond); (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc.; (6) RESULT: polymer chain of linked monomers—each bond required removing one H2O, so for 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water—requires energy, example: many glucose → starch + many H2O; HYDROLYSIS (breaking down): polymer + water → (add water) → monomers—releases energy, example: starch + many H2O → many glucose (digestion uses hydrolysis!)—the terms tell you the direction: dehydration = removing water = building up (synthesis), hydrolysis = adding water = breaking down (digestion); remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis, HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water—these opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). In this case, the plant cell uses dehydration synthesis to link many glucose monomers into a starch polymer, releasing water with each bond formed to store energy efficiently. Choice A correctly describes synthesis by recognizing dehydration synthesis joins monomers (water removed, bonds formed) to create polymers like starch. Choice C fails because it confuses synthesis with hydrolysis, where water is added to break down polymers, not build them—keep in mind that building up requires removing water! Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other; (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites; (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence 'dehydration'); (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond); (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc.; (6) RESULT: polymer chain of linked monomers—each bond required removing one H2O, so for 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water—requires energy, example: many glucose → starch + many H2O; HYDROLYSIS (breaking down): polymer + water → (add water) → monomers—releases energy, example: starch + many H2O → many glucose (digestion uses hydrolysis!)—the terms tell you the direction: dehydration = removing water = building up (synthesis), hydrolysis = adding water = breaking down (digestion); remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis, HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water—these opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose). For building a polysaccharide, monomers like glucose are joined via dehydration synthesis to form the polymer chain. Choice B correctly describes synthesis by recognizing dehydration synthesis joins monomers (water removed, bonds formed) to create polymers such as starch or cellulose. Choice A fails because it reverses the terms: monomers are small building blocks, and polymers are the large chains—monomers build polymers, not the other way around! Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other; (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites; (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence 'dehydration'); (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond); (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc.; (6) RESULT: polymer chain of linked monomers—each bond required removing one H2O, so for 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water—requires energy, example: many glucose → starch + many H2O; HYDROLYSIS (breaking down): polymer + water → (add water) → monomers—releases energy, example: starch + many H2O → many glucose (digestion uses hydrolysis!)—the terms tell you the direction: dehydration = removing water = building up (synthesis), hydrolysis = adding water = breaking down (digestion); remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis, HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water—these opposite processes balance building and breakdown in metabolism!

This question tests your understanding of how simple sugars like glucose are linked together through synthesis reactions to build larger macromolecules such as starch, cellulose, and how glucose carbons are incorporated into proteins, lipids, and nucleic acids. Macromolecule synthesis from sugars occurs through dehydration synthesis (also called condensation reaction): when two glucose molecules join together, an -OH (hydroxyl group) from one glucose and an -H (hydrogen) from the other combine to form H2O (water) which is removed, and the two glucose molecules form a covalent bond where the water was removed, creating a larger molecule (disaccharide, or with many glucose molecules, a polysaccharide like starch or cellulose)—beyond carbohydrates, the carbon atoms from glucose can be rearranged (with addition of nitrogen from proteins, phosphorus from nucleic acids) to build ALL types of macromolecules: proteins, lipids, and nucleic acids all use carbon skeletons ultimately derived from glucose produced in photosynthesis. Glucose contributes to proteins by providing carbon for amino acid synthesis, which are then linked via dehydration synthesis. Choice B correctly describes synthesis by recognizing dehydration synthesis joins monomers (water removed, bonds formed) to create polymers, or glucose provides carbons for macromolecules like proteins with added nitrogen. Choice A fails because glucose doesn't directly become proteins; it supplies carbons that combine with other elements to form amino acids first—synthesis requires building blocks! Understanding dehydration synthesis—the water removal mechanism: (1) START with two monomers (two glucose molecules, or glucose + amino acid, etc.) positioned next to each other; (2) IDENTIFY functional groups: each monomer has -OH (hydroxyl) and -H (hydrogen) groups at bonding sites; (3) REMOVE water: -OH from one monomer + -H from other monomer → H2O (water molecule removed, hence 'dehydration'); (4) FORM bond: where -OH and -H were removed, monomers now bonded directly (covalent bond); (5) REPEAT: add third monomer (remove another water, form another bond), add fourth (remove water, bond), etc.; (6) RESULT: polymer chain of linked monomers—each bond required removing one H2O, so for 100 glucose units in starch chain, 99 water molecules removed (n monomers need n-1 bonding reactions). This dehydration synthesis is universal for building biological polymers! The reverse process (breaking down): DEHYDRATION SYNTHESIS (building): monomers → (remove water) → polymer + water—requires energy, example: many glucose → starch + many H2O; HYDROLYSIS (breaking down): polymer + water → (add water) → monomers—releases energy, example: starch + many H2O → many glucose (digestion uses hydrolysis!)—the terms tell you the direction: dehydration = removing water = building up (synthesis), hydrolysis = adding water = breaking down (digestion); remembering which is which: DEHYDRATION sounds like drying out (removing water) = synthesis, HYDROLYSIS sounds like water (hydro = water, lysis = breaking) = breaking down with water—these opposite processes balance building and breakdown in metabolism!