Water, pH and Macromolecules Most of the important functional groups in biological molecules contain nitrogen and a phosphate oxygen and a phosphate oxygen and/or nitrogen and are acidic oxygen and/or nitrogen and are polar nitrogen and a phosphate oxygen and a phosphate oxygen and/or nitrogen and are acidic oxygen and/or nitrogen and are polar ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules H2O and CH4 are both examples of molecules ions none of these acids molecules ions none of these acids ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A Bronsted acid becomes __________ upon losing a proton. highly reactive a hydronium ion its conjugate acid its conjugate base highly reactive a hydronium ion its conjugate acid its conjugate base ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The reactions of molecules require an enzyme in all cases All of these are independent of the functional groups are the reactions of the functional groups require an enzyme in all cases All of these are independent of the functional groups are the reactions of the functional groups ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? Histidine+/histidine H2CO3/HCO3- All of these H2PO4-/HPO42- Histidine+/histidine H2CO3/HCO3- All of these H2PO4-/HPO42- ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following statements about covalently bonded molecules is false? Such molecules often result from the interaction of ionized atoms Electrons are shared between the atoms that make up the molecule The chemical bonds that hold the molecule together are relatively strong Noncovalent bonds may also be present, especially if the molecule is large Such molecules often result from the interaction of ionized atoms Electrons are shared between the atoms that make up the molecule The chemical bonds that hold the molecule together are relatively strong Noncovalent bonds may also be present, especially if the molecule is large ANSWER DOWNLOAD EXAMIANS APP
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