Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? All of these H2CO3/HCO3- Histidine+/histidine H2PO4-/HPO42- All of these H2CO3/HCO3- Histidine+/histidine H2PO4-/HPO42- ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The pH of a solution is determined by relative concentration of acids and bases dielectric constant of the medium concentration of salt environmental effect relative concentration of acids and bases dielectric constant of the medium concentration of salt environmental effect ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following organic groups are found in naturally occuring amino acids? Guanidinium ion Imidazole Indole All of these Guanidinium ion Imidazole Indole All of these ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A solution with pH = 5 is __________ than a solution with pH = 7. 100 times more acidic 10 times more acidic 10 times more basic 2 times more basic 100 times more acidic 10 times more acidic 10 times more basic 2 times more basic ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Buffer solutions are rarely found in living systems cause a decrease in pH when acids are added to them. will always have a pH of 7 tend to maintain a relatively constant pH. are rarely found in living systems cause a decrease in pH when acids are added to them. will always have a pH of 7 tend to maintain a relatively constant pH. 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 The chemical bonds that hold the molecule together are relatively strong Noncovalent bonds may also be present, especially if the molecule is large Electrons are shared between the atoms that make up the molecule Such molecules often result from the interaction of ionized atoms The chemical bonds that hold the molecule together are relatively strong Noncovalent bonds may also be present, especially if the molecule is large Electrons are shared between the atoms that make up the molecule ANSWER DOWNLOAD EXAMIANS APP
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