19) Which of the following best summarizes the relationship between ...
19) Which of the following best summarizes the relationship between dehydration reactions and hydrolysis? A) Dehydration reactiors assemblepolymers, and hydrolysis breaks them down. B) Hydrolysis occurs during the day, and dehydration reactions happen at night. C)Dehydration reactions can occur only after hydrolysis. D) Hydrolysis createsmonomers, and dehydration reactions destroy them. _
E) Dehydration reactions occw in planis, and hydrolysis happens in animals.
20) The c-helix and the p-pleated sheet are both common forms found in which level of protein structure? A) primary B) secondary C) tertiary D) quatemary 21) Recent researchsuggeststhat side effects from Ritalin, the drug used to treat attention deficit disorder, may be causedby contamination of enantiomers, or molecules that A) have identicai three-dimensional shapes. B) are mirror images of one another. C) Iack an asymmetric carbon. D) differ in the location of their double bonds. E) dilfer in their electrical charge. 22) Desertrabbits are adaptedto the warm climate becausetheir large earsaid in the removalof heat by A) the high surface tension of water. B) the high heat of vaporization of water. C) the high specificheat of water. D) the bu{fering capacity of water. E) the dissociationof water molecules. 23) The ionic bond of sodium drloride is formed when !!)drlorine gainsan electronfrom sodium. B) sodium and drlorine share an electron pair. C) sodiqm and d orine both lose electrons from their outer valence shells. D) sodium gains an electron from chlorine. E) chlorine gains a proton from sodium. 24) Atoms whose outer electron shells contain eight electrons tend to A) form ionic bonds in aqueous solutions. B) form covalent bonds in aqueous solutiors. C) be stableand nonreactive. D) be unstable and very reactive. E) be biologically important becausethey are present in organic molecules.
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E) Dehydration reactions occw in planis, and hydrolysis happens in animals.
20) The c-helix and the p-pleated sheet are both common forms found in which level of protein structure? A) primary B) secondary C) tertiary D) quatemary 21) Recent researchsuggeststhat side effects from Ritalin, the drug used to treat attention deficit disorder, may be causedby contamination of enantiomers, or molecules that A) have identicai three-dimensional shapes. B) are mirror images of one another. C) Iack an asymmetric carbon. D) differ in the location of their double bonds. E) dilfer in their electrical charge. 22) Desertrabbits are adaptedto the warm climate becausetheir large earsaid in the removalof heat by A) the high surface tension of water. B) the high heat of vaporization of water. C) the high specificheat of water. D) the bu{fering capacity of water. E) the dissociationof water molecules. 23) The ionic bond of sodium drloride is formed when !!)drlorine gainsan electronfrom sodium. B) sodium and drlorine share an electron pair. C) sodiqm and d orine both lose electrons from their outer valence shells. D) sodium gains an electron from chlorine. E) chlorine gains a proton from sodium. 24) Atoms whose outer electron shells contain eight electrons tend to A) form ionic bonds in aqueous solutions. B) form covalent bonds in aqueous solutiors. C) be stableand nonreactive. D) be unstable and very reactive. E) be biologically important becausethey are present in organic molecules.
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