Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? H2CO3/HCO3- Histidine+/histidine H2PO4-/HPO42- All of these H2CO3/HCO3- Histidine+/histidine H2PO4-/HPO42- All of these ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The reactions of molecules All of these require an enzyme in all cases are independent of the functional groups are the reactions of the functional groups All of these require an enzyme in all cases are independent of the functional groups are the reactions of the functional groups 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? Protein DNA Strong base Phospholipid Protein DNA Strong base Phospholipid ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages. hydrogen covalent noncovalent ionic hydrogen covalent noncovalent ionic ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Salt dissolves well in water as water molecules make nonpolar covalent bonds with the positively charged ions only share electrons with the ions to make polar covalent bonds form hydrogen bonds with the positively and negatively charged ions surround the ions because of their charge but do not form hydrogen bonds make nonpolar covalent bonds with the positively charged ions only share electrons with the ions to make polar covalent bonds form hydrogen bonds with the positively and negatively charged ions surround the ions because of their charge but do not form hydrogen bonds ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The lone pair electrons on oxygen in a H20 molecule carry a partial negative charge carry a partial positive charge are not important for the properties of water form covalent bonds in ice carry a partial negative charge carry a partial positive charge are not important for the properties of water form covalent bonds in ice ANSWER DOWNLOAD EXAMIANS APP
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