Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? All of these H2CO3/HCO3- H2PO4-/HPO42- Histidine+/histidine All of these H2CO3/HCO3- H2PO4-/HPO42- Histidine+/histidine 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
Water, pH and Macromolecules The strength of an acid depends on number of double bonds electronegativity number of protons released number of neutrons gain number of double bonds electronegativity number of protons released number of neutrons gain ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The main difference between an acid and a base is that bases donate hydrogen ions in water while acids accept hydrogen ions acids are polar molecules and bases are not acids donate hydrogen ions in water while bases accept hydrogen ions bases are polar molecules and acids are not bases donate hydrogen ions in water while acids accept hydrogen ions acids are polar molecules and bases are not acids donate hydrogen ions in water while bases accept hydrogen ions bases are polar molecules and acids are not ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following will easily dissolve in a polar solvent? methane sodium chloride gasoline (heptanes & octanes) argon methane sodium chloride gasoline (heptanes & octanes) argon ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules If protein is made exclusively from nonpolar amino acids, then it will this protein interact with water? It will form a membrane in water be repelled by water It will be attracted to water It will act as a buffer and stabilize the pH It will form a membrane in water be repelled by water It will be attracted to water It will act as a buffer and stabilize the pH ANSWER DOWNLOAD EXAMIANS APP
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