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 A Bronsted acid becomes __________ upon losing a proton. highly reactive its conjugate base its conjugate acid a hydronium ion highly reactive its conjugate base its conjugate acid a hydronium ion ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule? Strong base DNA Protein Phospholipid Strong base DNA Protein Phospholipid ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A compound that is capable of forming hydrogen bonds with water is probably held together by noncovalent bonds should act as a good buffer for acids and bases contains at least some polar covalent bonds does not dissolve well in water is probably held together by noncovalent bonds should act as a good buffer for acids and bases contains at least some polar covalent bonds does not dissolve well in water ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Weak acids generally have pKa pKa values greater than 2 been seldom found in living systems values less than 1 that cannot be used to buffer pKa values greater than 2 been seldom found in living systems values less than 1 that cannot be used to buffer 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 act as a buffer and stabilize the pH It will be attracted to water It will form a membrane in water be repelled by water It will act as a buffer and stabilize the pH It will be attracted to water ANSWER DOWNLOAD EXAMIANS APP
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